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China OEM Hollow Double Shafts NEMA 8 Micro Stepper Motor (20SHD0250-10SK) with Hot selling

Product Description

NEMA 8 Hollow Double Shafts Micro Stepper Motor (20SHD0001-12SK)

Product Information

1) Raw Materials: Tested by Professional Precise Equipment.

2) 3 Inspection Lines

3) 1 Year Gurantee + Famous Chain Customers

Product Name	Electric Stepper Motor
Dimensions	Nema8(20mm), 11(28mm), 14(35mm), 16(39mm), 17(42mm), 23(57mm), 24(60mm), 34(86mm)
Step Angle	Degree 0.9, 1.2, 1.8(Optional or Customized)
Torque (oz.in)	Up to 3.11, 5.7, 17, 41, 56, 85, 113, 425,
Rated Current (A/Phase)	0.1A~10A
Typical Applications	Inject Printers, Analytical and Medical Instruments, Textile Equipment, Embroidery Machine, Precision Telescope Positioning Systems, High Speed Dome Camera and Robotics

Product Display

Casun HYBRID STEPPER MOTOR (20SHD0001-12SK)

Motor Name: HYBRID STEPPER MOTOR

Size: NEMA 8 (20*20*30mm)

Feature: small volume, low noise, smooth running

The Outline Drawing of NEMA 8 Stepper Motor:

Casun HYBRID STEPPER MOTOR 20SHD0001-12SK
General Specification		Electrical Specification
Step Angle	1.8°	Rated Voltage	3.9V
Number of Phase	2	Rated Current	0.6A
Insulation Resistance	100MΩmin. (500V DC)	Resistance per phase	6.5Ω±10%
Insulation Class	Class B	Inductance per Phase	1.7mH±20%
Rotor Inertia	2g.cm²	Holding torque	18mN.m
Mass	0.06kg	Detent torque	2mN.m

More Specification

Modle	Holding Torque	Rated Current	Resistance per phase	Inductance per phase	Detent Torque	Rotor inertia	Lead wire	Motor Length
Modle	mN.m	A	Ω	mH	mN.m	g.cm²	No.	mm
42SHD571	200	0.7	12	15	7.5	20	4	26
42SHD0001	260	0.4	30	37	12	38	4	34
42SHD0002	280	0.6	22	28	12	38	4
42SHD0009	200	0.4	30	21	12	38	6
42SHD571	200	1.2	2.1	1.2	12	38	6
42SHD5712	400	0.5	25	50	18	57	4	40
42SHD5716	400	1.0	4.5	10	18	57	4
42SHD5719	300	1.2	3.2	3.0	18	57	6
42SHD0404	450	1.5	2.0	2.8	37	72	4	48
42SHD0441	420	1.2	3.2	6	37	72	4	48
42SHD0801	600	1.5	2.0	3.2	42	102	4	60

Above is our partial products parameter, for more products pls contact us. OEM &ODM are welcomed.

Notice

1.Motors production
All the proucts we sold here are manufactured by HangZhou FUDE Technology Co., Ltd.,China.

2.Motors selection
Please contact us to confirm the model and other details of the motor before purchase.

3.Payment
We can serve samples and accept fully prepayment only . 50% advance is needed for bulk purchase and balance before shipment .Paypal, Western Union, T/T are all accepted.

4.Delivery
Samples in stock can be delivered within 7 days and customized samples within 30 days. Delivery date for bulk order depends on quantity.

5.Feedback and after-sale service
Any problems in using are welcome to be informed !Our technician will give you professional advise. We will give you free maintenance within 24 months if the flaws are the result of production.

What’s More

Welcome to customize all types of stepper motors

Please feel free to contact us !

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
screwshaft

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
screwshaft

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
screwshaft

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

China OEM Hollow Double Shafts NEMA 8 Micro Stepper Motor (20SHD0250-10SK) with Hot selling

China OEM Drilled 4 Inch Aluminum Hub Type Incoloy 825 36 Inch Intake Manifold Flange with Free Design Custom

Product Description

Product Name	Drilled 4 Inch Aluminum Hub Type Incoloy 825 36 Inch Intake Manifold Flange
Brand Name	HengTongXing
Material	Stainless Steel: SS304, SS316, SS304L, SS316L, SS321, SS310 ,1.4401, 1.4403 Duplex Stainless Steel: 9041L 2205, 2507, 254SMO, etc
Type	Plate, Slip-on , Welding Neck, Blind, Threaded, Socked Weld, Loose, RTJ
Class	150# 300# 400# 600# 900# 1500# 2500# PN6 PN10 PN16 PN25 PN40 PN63 5K 10K 20K 30
Standard	ANSI/ASME B16.5, BS4505, GOST12820-80, DIN, UNI, EN1092-1, JIS/KS
Size	1/2″NB to 48″NB
Connection	RF FF RTJ
Application	For Water, Oil and Gas Industrial
Certificate	CE / ISO / SGS

Screws and Screw Shafts

A screw is a mechanical device that holds objects together. Screws are usually forged or machined. They are also used in screw jacks and press-fitted vises. Their self-locking properties make them a popular choice in many different industries. Here are some of the benefits of screws and how they work. Also read about their self-locking properties. The following information will help you choose the right screw for your application.

Machined screw shaft

A machined screw shaft can be made of various materials, depending on the application. Screw shafts can be made from stainless steel, brass, bronze, titanium, or iron. Most manufacturers use high-precision CNC machines or lathes to manufacture these products. These products come in many sizes and shapes, and they have varying applications. Different materials are used for different sizes and shapes. Here are some examples of what you can use these screws for:
Screws are widely used in many applications. One of the most common uses is in holding objects together. This type of fastener is used in screw jacks, vises, and screw presses. The thread pitch of a screw can vary. Generally, a smaller pitch results in greater mechanical advantage. Hence, a machined screw shaft should be sized appropriately. This ensures that your product will last for a long time.
A machined screw shaft should be compatible with various threading systems. In general, the ASME system is used for threaded parts. The threaded hole occupies most of the shaft. The thread of the bolt occupy either part of the shaft, or the entire one. There are also alternatives to bolts, including riveting, rolling pins, and pinned shafts. These alternatives are not widely used today, but they are useful for certain niche applications.
If you are using a ball screw, you can choose to anneal the screw shaft. To anneal the screw shaft, use a water-soaked rag as a heat barrier. You can choose from 2 different options, depending on your application. One option is to cover the screw shaft with a dust-proof enclosure. Alternatively, you can install a protective heat barrier over the screw shaft. You can also choose to cover the screw shaft with a dust-proof machine.
If you need a smaller size, you can choose a smaller screw. It may be smaller than a quarter of an inch, but it may still be compatible with another part. The smaller ones, however, will often have a corresponding mating part. These parts are typically denominated by their ANSI numerical size designation, which does not indicate threads-per-inch. There is an industry standard for screw sizes that is a little easier to understand.
screwshaft

Ball screw nut

When choosing a Ball screw nut for a screw shaft, it is important to consider the critical speed of the machine. This value excites the natural frequency of a screw and determines how fast it can be turned. In other words, it varies with the screw diameter and unsupported length. It also depends on the screw shaft’s diameter and end fixity. Depending on the application, the nut can be run at a maximum speed of about 80% of its theoretical critical speed.
The inner return of a ball nut is a cross-over deflector that forces the balls to climb over the crest of the screw. In 1 revolution of the screw, a ball will cross over the nut crest to return to the screw. Similarly, the outer circuit is a circular shape. Both flanges have 1 contact point on the ball shaft, and the nut is connected to the screw shaft by a screw.
The accuracy of ball screws depends on several factors, including the manufacturing precision of the ball grooves, the compactness of the assembly, and the set-up precision of the nut. Depending on the application, the lead accuracy of a ball screw nut may vary significantly. To improve lead accuracy, preloading, and lubrication are important. Ewellix ball screw assembly specialists can help you determine the best option for your application.
A ball screw nut should be preloaded prior to installation in order to achieve the expected service life. The smallest amount of preload required can reduce a ball screw’s calculated life by as much as 90 percent. Using a lubricant of a standard grade is recommended. Some lubricants contain additives. Using grease or oil in place of oil can prolong the life of the screw.
A ball screw nut is a type of threaded nut that is used in a number of different applications. It works similar to a ball bearing in that it contains hardened steel balls that move along a series of inclined races. When choosing a ball screw nut, engineers should consider the following factors: speed, life span, mounting, and lubrication. In addition, there are other considerations, such as the environment in which the screw is used.
screwshaft

Self-locking property of screw shaft

A self-locking screw is 1 that is capable of rotating without the use of a lock washer or bolt. This property is dependent on a number of factors, but 1 of them is the pitch angle of the thread. A screw with a small pitch angle is less likely to self-lock, while a large pitch angle is more likely to spontaneously rotate. The limiting angle of a self-locking thread can be calculated by calculating the torque Mkdw at which the screw is first released.
The pitch angle of the screw’s threads and its coefficient of friction determine the self-locking function of the screw. Other factors that affect its self-locking function include environmental conditions, high or low temperature, and vibration. Self-locking screws are often used in single-line applications and are limited by the size of their pitch. Therefore, the self-locking property of the screw shaft depends on the specific application.
The self-locking feature of a screw is an important factor. If a screw is not in a state of motion, it can be a dangerous or unusable machine. The self-locking property of a screw is critical in many applications, from corkscrews to threaded pipe joints. Screws are also used as power linkages, although their use is rarely necessary for high-power operations. In the archimedes’ screw, for example, the blades of the screw rotate around an axis. A screw conveyor uses a rotating helical chamber to move materials. A micrometer uses a precision-calibrated screw to measure length.
Self-locking screws are commonly used in lead screw technology. Their pitch and coefficient of friction are important factors in determining the self-locking property of screws. This property is advantageous in many applications because it eliminates the need for a costly brake. Its self-locking property means that the screw will be secure without requiring a special kind of force or torque. There are many other factors that contribute to the self-locking property of a screw, but this is the most common factor.
Screws with right-hand threads have threads that angle up to the right. The opposite is true for left-hand screws. While turning a screw counter-clockwise will loosen it, a right-handed person will use a right-handed thumb-up to turn it. Similarly, a left-handed person will use their thumb to turn a screw counter-clockwise. And vice versa.
screwshaft

Materials used to manufacture screw shaft

Many materials are commonly used to manufacture screw shafts. The most common are steel, stainless steel, brass, bronze, and titanium. These materials have advantages and disadvantages that make them good candidates for screw production. Some screw types are also made of copper to fight corrosion and ensure durability over time. Other materials include nylon, Teflon, and aluminum. Brass screws are lightweight and have aesthetic appeal. The choice of material for a screw shaft depends on the use it will be made for.
Shafts are typically produced using 3 steps. Screws are manufactured from large coils, wire, or round bar stock. After these are produced, the blanks are cut to the appropriate length and cold headed. This cold working process pressudes features into the screw head. More complicated screw shapes may require 2 heading processes to achieve the desired shape. The process is very precise and accurate, so it is an ideal choice for screw manufacturing.
The type of material used to manufacture a screw shaft is crucial for the function it will serve. The type of material chosen will depend on where the screw is being used. If the screw is for an indoor project, you can opt for a cheaper, low-tech screw. But if the screw is for an outdoor project, you’ll need to use a specific type of screw. This is because outdoor screws will be exposed to humidity and temperature changes. Some screws may even be coated with a protective coating to protect them from the elements.
Screws can also be self-threading and self-tapping. The self-threading or self-tapping screw creates a complementary helix within the material. Other screws are made with a thread which cuts into the material it fastens. Other types of screws create a helical groove on softer material to provide compression. The most common uses of a screw include holding 2 components together.
There are many types of bolts available. Some are more expensive than others, but they are generally more resistant to corrosion. They can also be made from stainless steel or aluminum. But they require high-strength materials. If you’re wondering what screws are, consider this article. There are tons of options available for screw shaft manufacturing. You’ll be surprised how versatile they can be! The choice is yours, and you can be confident that you’ll find the screw shaft that will best fit your application.

China OEM Drilled 4 Inch Aluminum Hub Type Incoloy 825 36 Inch Intake Manifold Flange with Free Design Custom

China factory Black Magnetic Oil Plug with Outer Hexagon Thread near me factory

Product Description

High Quality Aluminum Casting /Machining/Surface Treatment Plasticity Cast Iron Parts

Product Description

Product name	customized Design Aluminum casting
Model Number	GC221701
Material	Carbon steel, medium steel, steel alloy, etc
size	12-300mm
Application	Industrial and household
Color	custom color
Specifications	Custom Specifications

Company Profile

HangZhou Gancheng Machine was established on January 28, 2016. It is a one-stop, all-round customized manufacturer and service provider of industrial parts in the global market. The company mainly produces sheet metal parts, cast and forged parts, fasteners, and shaft garments. Collar and coulpings, CNC machining parts. Reasonable price with reliable quality management system. We welcome OEM and customized requirements, and look forward to your future business relationship and mutual relationship with us
1. Who are we?
HangZhou Gancheng machinery Co., Ltd. is a professional machinery parts processing plant, the annual output value of 15 million yuan, located in HangZhou, ZHangZhoug, 30 kilometers away from HangZhou port, you can quickly find us
2. How do we ensure quality?
As a professional production of mechanical parts, we will produce samples in strict accordance with customers’ requirements before the determination of mass production, and start mass production after the sample confirmation, in order to ensure the quality of our products
3. What can you buy from us?
HangZhou gancheng machinery co., LTD. Can produce a variety of products according to customer requirements
4. Why choose us?
HangZhou HangZhou Gancheng Co., Ltd. has 10 years of production experience, accurate delivery date, high quality products, integrity management, is your best supplier
5. Services we can provide
Payment terms acceptable: T/T
Acceptable currency of payment: USD RMB EUR
Type of payment acceptable: Advance payment
Language Skills: English and Chinese

Packaging & Shipping

Our Advantages

Factory DIY milling processing service axis CNC router parts manufacturing
Aluminum, brass, bronze, copper, hardened metal, precious metal, stainless steel, steel alloy
1. We have our own factory, complete testing equipment, strong technical force
2. We offer a reasonable price
3. With reliable quality, high precision, tolerance can be within ± 0.01 mm.
4. Wide range of products
5. We can also provide one-stop service, including mold and assembly

Screw Shaft Types

A screw shaft is a cylindrical part that turns. Depending on its size, it is able to drive many different types of devices. The following information outlines the different types of screws, including their sizes, material, function, and applications. To help you select the right screw shaft, consider the following factors:
screwshaft

Size

A screw can come in a variety of shapes and sizes, ranging from a quarter to a quarter-inch in diameter. A screw is a cylindrical shaft with an inclined plane wrapped around it, and its main function is to fasten objects together by translating torque into a linear force. This article will discuss the dimensions of screws and how to determine the size of a screw. It is important to note that screw sizes can be large and small depending on the purpose.
The diameter of a screw is the diameter of its shaft, and it must match the inner diameter of its nuts and washers. Screws of a certain diameter are also called machine screws, and they can be larger or smaller. Screw diameters are measured on the shaft underneath the screw head. The American Society of Mechanical Engineers (ASME) standardized screw diameters in 3/50-inch to 16 (3/8-inch) inches, and more recently, sizes were added in U.S. fractions of an inch. While shaft and head diameters are standardized, screw length may vary from job to job.
In the case of the 2.3-mm screw group, the construct strength was not improved by the 1.2-mm group. The smaller screw size did not increase the strength of the construct. Further, ABS material did not improve the construct strength. Thus, the size of screw shaft is an important consideration in model design. And remember that the more complex your model is, the larger it will be. A screw of a given size will have a similar failure rate as a screw of a different diameter.
Although different screw sizes are widely used, the differences in screw size were not statistically significant. Although there are some limitations, screws of different sizes are generally sufficient for fixation of a metacarpal shaft fracture. However, further clinical studies are needed to compare screw sizes for fracture union rates. So, if you are unsure of what size of screw shaft you need for your case, make sure to check the metric chart and ensure you use the right one.
screwshaft

Material

The material of a screw shaft plays an important role in the overall performance of a screw. Axial and central forces act to apply torque to the screw, while external forces, such as friction, exert a bending moment. The torsional moments are reflected in the torque, and this causes the screw to rotate at a higher rate than necessary. To ensure the longevity of the screw, the material of the screw shaft should be able to handle the bending moment, while the diameter of the shaft should be small enough to avoid causing damage.
Screws are made from different metals, such as steel, brass, titanium, and bronze. Manufacturers often apply a top coating of chromium, brass, or zinc to improve corrosion resistance. Screws made of aluminum are not durable and are prone to rusting due to exposure to weather conditions. The majority of screw shafts are self-locking. They are suited for many applications, including threaded fasteners, C-clamps, and vises.
Screws that are fabricated with conical sections typically feature reduced open cross-sectional areas at the discharge point. This is a key design parameter of conical screw shafts. In fact, reductions of up to 72% are common across a variety of applications. If the screw is designed to have a hard-iron hanger bearing, it must be hardened. If the screw shaft is not hardened, it will require an additional lubricant.
Another consideration is the threads. Screw shafts are typically made of high-precision threads and ridges. These are manufactured on lathes and CNC machines. Different shapes require different materials. Materials for the screw shaft vary. There are many different sizes and shapes available, and each 1 has its own application. In addition to helical and conical screw shafts, different materials are also available. When choosing material, the best 1 depends on the application.
The life of the screw depends on its size, load, and design. In general, the material of the screw shaft, nut body, and balls and rollers determine its fatigue life. This affects the overall life of the screw. To determine whether a specific screw has a longer or shorter life, the manufacturer must consider these factors, as well as the application requirements. The material should be clean and free of imperfections. It should be smooth and free of cracks or flaking, which may result in premature failure.

Function

The function of a screw shaft is to facilitate the rotation of a screw. Screws have several thread forms, including single-start, double-start and multi-start. Each form has its own advantages and disadvantages. In this article we’ll explore each of them in detail. The function of a screw shaft can vary based on its design, but the following are common types. Here are some examples of screw shaft types and their purposes.
The screw’s torque enables it to lift objects. It can be used in conjunction with a bolt and nut to lift a load. Screws are also used to secure objects together. You can use them in screw presses, vises, and screw jacks. But their primary function is to hold objects together. Listed below are some of their main functions. When used to lift heavy loads, they can provide the required force to secure an object.
Screws can be classified into 2 types: square and round. Square threads are more efficient than round ones because they apply 0deg of angle to the nut. Square threads are also stronger than round threads and are often used in high-load applications. They’re generally cheaper to manufacture and are more difficult to break. And unlike square threads, which have a 0deg thread angle, these threads can’t be broken easily with a screwdriver.
A screw’s head is made of a series of spiral-like structures that extend from a cylindrical part to a tip. This portion of the screw is called the shank and is made of the smallest area. The shank is the portion that applies more force to the object. As the shaft extends from the head, it becomes thinner and narrow, forming a pointed tip. The head is the most important part of the screw, so it needs to be strong to perform its function.
The diameter of the screw shaft is measured in millimeters. The M8 screw has a thread pitch of 1.25 mm. Generally, the size of the screw shaft is indicated by the major and minor diameter. These dimensions are appended with a multiplication sign (M8x1).
screwshaft

Applications

The design of screws, including their size and shape, determines their critical rotating speeds. These speeds depend on the threaded part of the screw, the helix angle, and the geometry of the contact surfaces. When applied to a screw, these limits are referred to as “permissible speed limits.” These maximum speeds are meant for short periods of time and optimized running conditions. Continuous operation at these speeds can reduce the calculated life of a nut mechanism.
The main materials used to manufacture screws and screw shafts include steel, stainless steel, titanium, bronze, and brass. Screws may be coated for corrosion resistance, or they may be made of aluminium. Some materials can be threaded, including Teflon and nylon. Screw threads can even be molded into glass or porcelain. For the most part, steel and stainless steel are the most common materials for screw shafts. Depending on the purpose, a screw will be made of a material that is suitable for the application.
In addition to being used in fasteners, screw shafts are used in micrometers, drillers, conveyor belts, and helicopter blades. There are numerous applications of screw shafts, from weighing scales to measuring lengths. If you’re in the market for a screw, make sure to check out these applications. You’ll be happy you did! They can help you get the job done faster. So, don’t delay your next project.
If you’re interested in learning about screw sizing, then it’s important to know the axial and moment loads that your screws will experience. By following the laws of mechanics and knowing the load you can calculate the nominal life of your screw. You can also consider the effect of misalignment, uneven loading, and shocks on your screw. These will all affect the life of your screw. Then, you can select the right screw.

China factory Black Magnetic Oil Plug with Outer Hexagon Thread near me factory

China wholesaler China-Factory-Price ASTM a-536 UL/FM/CE Approved Ductile Iron Grooved-Pipe-Fitting Flexible/Rigid Coupling with Great quality

Product Description

LAMAT PIPING – Ductile Iron Grooved Fittings
Name	Rigid coupling, Flexible coupling, 90° Elbow, 45° Elbow, 22.5° Elbow, 11.25° Elbow, Split Flange, Adaptor Flange, Cap
	Tee, Reducing Tee(Grooved/Threaded), Mechnical Tee(Grooved/Threaded), U-bolted Mechnical Tee
	Cross, Reducing Cross(Grooved/Threaded), Mechnical Cross(Grooved/Threaded)
	Reducer(Grooved/Threaded), Grooved Eccentric Reducer
H.S. CODE	735710000
Technology	Casting
Connections	Grooved-Thread End, Grooved End
Pressure Rate	300PSI / 2.07MPa
Size	1” – 12”
Pipe O.D.	33.7MM – 323.9MM
Surface Finish	Epoxy Powder,Painting,Galvanization,Dacromet (in Red/Orange/Blue/White Color)
Design Standard	American Standard	ANSI/ASTM
	European Standard	EN
	British Standard	BS
	Germany Standard	DIN
	Japanese Standard	JIS
	ISO Standard	ISO
Thread Standard	ASME B.1.20.1 / EN15716 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN15716 / BS 21.173
Material Standard	Ductile Iron confirms to ASTM A-536 Gr65-45-12,EN1563,JIS G5502,QT450-12
Gasket Material	EPDM,NBR or Silicon Rubber
Bolts & Nuts	ISO 898-1class 8.8
Flanges Standard	PN series or Class series
Packages	Plywood Cases or Plywood Pallets or Boxes
Application	Fire Fighting System,Petrochemical & Gas Industry,Chemical,Machinery,Electric Power,Construction Water Works,Valve Industry,etc.
Advantages	High Quality + Ready Stock + Faster Delivery + Customized
Brand	LMP
Certificate	ISO9001,API,CE,UL/FM

Products Details

Factory & Workshop Show

Company Profile

WHO WE ARE

Lamat Piping established in 2002s,is 1 of China’s leading piping manufacturing and exporting suppliers,specialized in qualified steel flanges, butt weld pipe fittings and malleable cast iron fittings for clients from over 60 countries and regions worldwide.

Lamat Piping is the single and independent exporting department of NPCC(National Piping Construction Cooperation),who is a group company with 5 factories located in ZheJiang and ZheJiang , where the regions have very long histories in manufacturing Steel & Iron products dating back to 1990s. CZPT Piping(NPCC) aims to combine and intergrade some leading and high quality industries to become a modern and international piping supplier in the new century. Now we have more than 30 producing and machining lines with over 1000 normal workers and 80 technical employees. Our factories covers over 300,000 square meters,and has an annual output of 500,000Tons.

WHAT WE PRODUCE

Lamat Piping(NPCC) is producing flanges from 1/2” to 144” – Standards including ASTM B16.5, EN1092-1, BS4504, BS10, SANS1123, DIN, JIS, UNI, GOST, KS, AS, etc. Products including Plate Flanges FF/RF, Slip On Flanges FF/RF, Blind Flanges FF/RF, Welding Neck Flanges, Screwed Flange, Socketed Flanges, Lap Joint Flanges,Backing Rings Flanges,etc. Pressures includes 150LBS to 2500LBS in ASTM B16.5,PN6(T6/3/4/8) to PN100(T100/3/4/8) in EN1092-1/BS4504/BS10, T600/3/4/8 to T4000/3/4/8 in SANS1123.

Lamat Piping(NPCC) is producing butt weld fittings from 1/2” to 144” – Standards including ASTM B16.9, JIS B2311, EN15713, DIN, GOST…etc. Products including 45/90/180 Degree Short/Long Radius Elbow,Equal/Reducing Tee,Cross,Concentric/Eccentric Reducer,End Cap.

Lamat Piping(NPCC) is also producing malleable cast iron fittings from 1/2” to 6” – Standards ASME B16.3, ASME B16.14,BS EN15712,BS1256,DIN2950, BNR6943, ISO49,etc. Products including Elbow,Bend,Tee,Socket,Nipple,Bushing,Union,Cap,Plug,Back Nut.

WHAT WE SOURCE

With 30+ years constant efforts and experience,now CZPT Piping(NPCC) has become our customers’ expert manufacturer and supplier for a very wide range of piping products.And today CZPT Piping is not only supplying Flanges,BW fittings & Malleable Iron Fittings produced by ourselves,but also sourcing and exporting various Pipe Fittings & Valves s from China’s leading industries,including Cast Iron Valves, Ductile Iron Pipe Fitting, Stainless Steel 1,2,3PC Ball Valve, Stainless Steel 150LBS NPT/BSP Fittings, Wrought Steel Fittings,Grooved Fittings,Forged Steel Fittings,HDPE Pipes Fittings Valves,PVC Pipes Fittings Valves, Brass Valves Fittings,etc.

WHAT WE PROMISE

”BETTER QUALITY, BETTER SERVICES” is our promise to all of our customers and ”CREATE VALUE FOR CUSTOMERS” is our ultimate goal. CZPT Piping promises that we’ll continue to put quality in the first place;besides,we will not lose our fixed-focus on the service aspect of our business,which has been,and will continue to be the foundation of our success and our future growth.

WHAT YOU CHOOSE

If you’d like to trust CZPT Piping,Lamat people will do the best to be worthy of your trust!

Producing Process & Inspection

Pipeline System Application

Packaging & Shipping

FAQ

Q0: Are you a factory or trading company?
A: We are a factory mainly producing pipe fittings & flanges. We also have cooperated factories to supply other piping products.

Q1: How do your Control the Quality?
A: We have QA & QC department who will follow up all the producing process to make sure we’re supplying correctly.

Q2: What Machines are you using for Manufacturing and Machining?
A: We have Forging/Stamping Machine,CNC Machine,Hole-Drilling Machine,Sandblasting Machine. All producing is in our factory except Galvanization.

Q3: Can we get Samples for Testing?
A: Yes,sapmles are supplied free of charge.

Q4: Can you accept OEM & marking our LOGO?
A: Yes,no problem if you can provide Authorization.

Q5: Can you offer Drawings & Datasheets?
A: Yes,Drawings & Datasheets will be sent for your confirmation before Bulk Production.

Q6: Can you supply MTC with EN15714 3.1/3.2 Certificate?
A: Yes,MTC will be provided after production is finished.

Q7: Can we visit your factory to inspect the goods before delivery?
A: Yes sure. Welcome to our factory,and we also accept Third Party Inspection like SGS,TUV,BV,etc.

Q8: Can you combine goods from our other suppliers to ship together?
A: Yes,we’d like to assist you to ship together to save your time and money.

Q9: How long is your Delivery Time?
A: It depends on quantity and products. It can be delivered in 1 week if we have Ready-Stock; if not,the General Production Time is 25 – 50 Days.

Q10: What’s your Payment Terms?
A: Currently we’re working with our clients under T/T,L/C,O/A,Western Union,etc.

Lead Screws and Clamp Style Collars

If you have a lead screw, you’re probably interested in learning about the Acme thread on this type of shaft. You might also be interested in finding out about the Clamp style collars and Ball screw nut. But before you buy a new screw, make sure you understand what the terminology means. Here are some examples of screw shafts:

Acme thread

The standard ACME thread on a screw shaft is made of a metal that is resistant to corrosion and wear. It is used in a variety of applications. An Acme thread is available in a variety of sizes and styles. General purpose Acme threads are not designed to handle external radial loads and are supported by a shaft bearing and linear guide. Their design is intended to minimize the risk of flank wedging, which can cause friction forces and wear. The Centralizing Acme thread standard caters to applications without radial support and allows the thread to come into contact before its flanks are exposed to radial loads.
The ACME thread was first developed in 1894 for machine tools. While the acme lead screw is still the most popular screw in the US, European machines use the Trapezoidal Thread (Metric Acme). The acme thread is a stronger and more resilient alternative to square threads. It is also easier to cut than square threads and can be cut by using a single-point threading die.
Similarly to the internal threads, the metric versions of Acme are similar to their American counterparts. The only difference is that the metric threads are generally wider and are used more frequently in industrial settings. However, the metric-based screw threads are more common than their American counterparts worldwide. In addition, the Acme thread on screw shafts is used most often on external gears. But there is still a small minority of screw shafts that are made with a metric thread.
ACME screws provide a variety of advantages to users, including self-lubrication and reduced wear and tear. They are also ideal for vertical applications, where a reduced frictional force is required. In addition, ACME screws are highly resistant to back-drive and minimize the risk of backlash. Furthermore, they can be easily checked with readily available thread gauges. So, if you’re looking for a quality ACME screw for your next industrial project, look no further than ACME.
screwshaft

Lead screw coatings

The properties of lead screw materials affect their efficiency. These materials have high anti-corrosion, thermal resistance, and self-lubrication properties, which eliminates the need for lubrication. These coating materials include polytetrafluoroethylene (PFE), polyether ether ketone (PEK), and Vespel. Other desirable properties include high tensile strength, corrosion resistance, and rigidity.
The most common materials for lead screws are carbon steel, stainless steel, and aluminum. Lead screw coatings can be PTFE-based to withstand harsh environments and remove oil and grease. In addition to preventing corrosion, lead screw coatings improve the life of polymer parts. Lead screw assembly manufacturers offer a variety of customization options for their lead screw, including custom-molded nuts, thread forms, and nut bodies.
Lead screws are typically measured in rpm, or revolutions per minute. The PV curve represents the inverse relationship between contact surface pressure and sliding velocity. This value is affected by the material used in the construction of the screw, lubrication conditions, and end fixity. The critical speed of lead screws is determined by their length and minor diameter. End fixity refers to the support for the screw and affects its rigidity and critical speed.
The primary purpose of lead screws is to enable smooth movement. To achieve this, lead screws are usually preloaded with axial load, enabling consistent contact between a screw’s filets and nuts. Lead screws are often used in linear motion control systems and feature a large area of sliding contact between male and female threads. Lead screws can be manually operated or mortised and are available in a variety of sizes and materials. The materials used for lead screws include stainless steel and bronze, which are often protected by a PTFE type coating.
These screws are made of various materials, including stainless steel, bronze, and various plastics. They are also made to meet specific requirements for environmental conditions. In addition to lead screws, they can be made of stainless steel, aluminum, and carbon steel. Surface coatings can improve the screw’s corrosion resistance, while making it more wear resistant in tough environments. A screw that is coated with PTFE will maintain its anti-corrosion properties even in tough environments.
screwshaft

Clamp style collars

The screw shaft clamp style collar is a basic machine component, which is attached to the shaft via multiple screws. These collars act as mechanical stops, load bearing faces, or load transfer points. Their simple design makes them easy to install. This article will discuss the pros and cons of this style of collar. Let’s look at what you need to know before choosing a screw shaft clamp style collar. Here are some things to keep in mind.
Clamp-style shaft collars are a versatile mounting option for shafts. They have a recessed screw that fully engages the thread for secure locking. Screw shaft clamp collars come in different styles and can be used in both drive and power transmission applications. Listed below are the main differences between these 2 styles of collars. They are compatible with all types of shafts and are able to handle axial loads of up to 5500 pounds.
Clamp-style shaft collars are designed to prevent the screw from accidentally damaging the shaft when tightened. They can be tightened with a set screw to counteract the initial clamping force and prevent the shaft from coming loose. However, when tightening the screw, you should use a torque wrench. Using a set screw to tighten a screw shaft collar can cause it to warp and reduce the surface area that contacts the shaft.
Another key advantage to Clamp-style shaft collars is that they are easy to install. Clamp-style collars are available in one-piece and two-piece designs. These collars lock around the shaft and are easy to remove and install. They are ideal for virtually any shaft and can be installed without removing any components. This type of collar is also recommended for those who work on machines with sensitive components. However, be aware that the higher the OD, the more difficult it is to install and remove the collar.
Screw shaft clamp style collars are usually one-piece. A two-piece collar is easier to install than a one-piece one. The two-piece collars provide a more effective clamping force, as they use the full seating torque. Two-piece collars have the added benefit of being easy to install because they require no tools to install. You can disassemble one-piece collars before installing a two-piece collar.
screwshaft

Ball screw nut

The proper installation of a ball screw nut requires that the nut be installed on the center of the screw shaft. The return tubes of the ball nut must be oriented upward so that the ball nut will not overtravel. The adjusting nut must be tightened against a spacer or spring washer, then the nut is placed on the screw shaft. The nut should be rotated several times in both directions to ensure that it is centered.
Ball screw nuts are typically manufactured with a wide range of preloads. Large preloads are used to increase the rigidity of a ball screw assembly and prevent backlash, the lost motion caused by a clearance between the ball and nut. Using a large amount of preload can lead to excessive heat generation. The most common preload for ball screw nuts is 1 to 3%. This is usually more than enough to prevent backlash, but a higher preload will increase torque requirements.
The diameter of a ball screw is measured from its center, called the ball circle diameter. This diameter represents the distance a ball will travel during 1 rotation of the screw shaft. A smaller diameter means that there are fewer balls to carry the load. Larger leads mean longer travels per revolution and higher speeds. However, this type of screw cannot carry a greater load capacity. Increasing the length of the ball nut is not practical, due to manufacturing constraints.
The most important component of a ball screw is a ball bearing. This prevents excessive friction between the ball and the nut, which is common in lead-screw and nut combinations. Some ball screws feature preloaded balls, which avoid “wiggle” between the nut and the ball. This is particularly desirable in applications with rapidly changing loads. When this is not possible, the ball screw will experience significant backlash.
A ball screw nut can be either single or multiple circuits. Single or multiple-circuit ball nuts can be configured with 1 or 2 independent closed paths. Multi-circuit ball nuts have 2 or more circuits, making them more suitable for heavier loads. Depending on the application, a ball screw nut can be used for small clearance assemblies and compact sizes. In some cases, end caps and deflectors may be used to feed the balls back to their original position.

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Product Description

Gost Standard Ductile Iron&GGG40/Stainless Steel High Temperature Steam Flanged Globe Valve

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What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

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Product Description

Specifications Of Product

Company Profile

HangZhou CZPT International Trading Co., Ltd.

HangZhou CZPT Enterprise Co., Ltd.

Starting trade service from 2002 and manufacturing in 2006, HangZhou CZPT is a parts supplier for hydraulic cylinder and pneumatic cylinder application. In addition to the 3000 standard parts, we also offer our customers tailor-made articles or assemblies that are for special application. The main products are:

— Assembly hydraulic cylinder and components

— Pneumatic cylinder accessories

— Rod ends ( ball joint ends )

— Spherical plain bearing ( radial ball joint )

— Hydraulic fittings and adaptors

— Control cable and fittings for automobile or agricultural machinery

— PTO Shaft for Agricultural machinery

—Gear and Gear BOX

—Farm Blade

We were awarded the certification of quality management system ISO 9001: 2000 in Sept. 2006.

With well experienced staff of engineers and international salesmen, HangZhou CZPT has earned customers from global markets, products are exproted to Aisa, Europe, North America, South America, South Africa…etc.

With strict quality control before shipment during production, we provide products with geat quality and competitive price.

We know what the customer expects. Quality alone is not the only criteria, flexibility and service also turn a supplier into a partner.

Packaging & Shipping

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
screwshaft

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

China supplier Welding Stud in Carbon Steel with Good quality

China wholesaler Stainless Steel 3-Piece Investment Casting Lug Body Locking Device Optional Threaded Ball Valve From 1/4″ to 4″ for Flow Control in Plumbing System with Best Sales

Product Description

Application:
This type of valve is a kind of automatically or manually manipulation of butterfly type ball valve, because of its can be very good deal with viscous or medium with particulate, which is widely used in food, beverage, pharmaceutical and chemical industrial piping system,to regulate and control the medium flow in the system.
Work Principle:
This kind of valve can be handle both by eletric or a pneumatic actuator also can operated by handle
Electric actuator or pneumatic actuator is to revolve the axial movement of piston to be 90°rotation of valve shaft. So that the valve can be open or close. In that case, the flow can be control and achieve the task of swtch. They have 3 type of actuator:normally open (NO),normally closed (NC), air/ air(A/A).
Muti-position handle can use to 15°adjustment of valve 12 seat to lock open or close, In that way, the valve can control the flow.
Pulling handle can use to the 4 multi-function to lock open or close, In that way, the valve can control the flow.
Material:
steel parts:304 stainless steel, stainless steel 316L.
Seal:silicone rubber Material (VMQ) fluoroelastomer(FPM) EPDM (EPDM)Polytetrafluoroethylene (PTFE)
Standard Design:
Various standards of valves can be provided to to clients:DIN,3A,SMS,ISO/IDF,BS/RJT,ASME/BPE etc.
The parts of valve usually include:valve body divided into 2 parts, transfixion cavity sphere,stem and control sets(handle/actuator)etc.
FUTE have the series as follows: weld,clamp,weld/clamp etc.

Our Service:

On Samples	Buyer bear the air fee, but this fee will be reduced from order directly
On After Sales	Free replacement if there is any quality problem
On Delivery	Never delay delivery time
On Materials	Ensure material pure
Ensure material pure	Welcome

For More information about our products, please contact us freely. thank you!

Screw Shaft Types

Size

Material

Function

Applications

China wholesaler Stainless Steel 3-Piece Investment Casting Lug Body Locking Device Optional Threaded Ball Valve From 1/4

China manufacturer Hex Grub Screw Nylon Tipped Set Screw with White Tip with Hot selling

Product Description

No Mar Soft Nylon Tip Set Screw

Nylon Tip Set Screws / Set Screws with Nylon Tip / Brass tip Set screws, Hex Grub Screw Nylon Tipped Set Screw With White Tip,
M3*4mm Nylon Tipped Set Screw with green tip/ Set Screws with Nylon Tip / Brass tip Set screws / plastic tip set screws, Soft tip set screws, set screw with soft tips, No-Mar set screws, nylon tip socket set screws, No-Mar Set Screws Plastic Tip, Hex Grub Screw M3*4mm Nylon Tipped Set Screw With Green Tip, M3*4mm Nylon Tip Socket Set Screw,
stainless steel set screw with plastic tip, Set screw with white nylon tip, slot drive set screw with plastic tip, socket drive set screw with plastic tip, Nylon Tipped Set Screw, plastic tip set screw, set screws with nylon tip lock tight, nylon tip slot set screws, nylon tip socket set screws, black oxide set screw with plastic tip, black oxide set screw with soft tip, soft tip threaded set screw, no mar plastic tip set screw, plastic tip set screw for lighting, Nylon Tipped Set Screw with green tip,

1.Grade: 4.8 — 12.9, A2, A4
2.Size: M2-M20
3.Finish:plain, zinc plated, hot dip galvanized, black, dacroment, etc

4.Material:Stainless Steel, Alloy Steel 12.9 Grade. Soft nylon, brass.

5.DIN Standard. : DIN913, DIN914,DIN915, DIN916, DIN553.

6.Packing: Standard export packing or According to customer’s requirement

Nylon tip Set screw from CZPT made of stainless steel or Alloy steel bodies, soft nylon for tip.

Our Nylon tip set screws are used to lock against shaft where insulating value or conforming properties of nylon desired. Set screws with nylon tip lock tight, and won’t mar the mating surface or the mating part.

These screws will not mar or damage the shaft or surface they contact. The nylon conforms to the surface of the shaft. Extra holding power is developed by full face contact over regular set screws. Can be used over and over again.

Min qty: 1000pcs.

Delivery time: 15-30days.

Shipment service: Door to Door (By courier)

By Air

By Ocean.

Nylon Tipped End Set Screws
1.Grade: 8.8 — 12.9, A2, A4
2.Size: M2-M20
3.Finish:plain, zinc plated, hot dip galvanized, black, dacroment, etc

4.Material:Stainless Steel, Alloy Steel 12.9 Grade. Soft nylon, brass.

5.DIN Standard. : DIN913, DIN914,DIN915, DIN916, DIN553.

6.Packing: Standard export packing or According to customer’s requirement

Nylon tip Set screw from CZPT made of stainless steel or Alloy steel bodies, soft nylon for tip.

Min qty: 1000pcs.

Delivery time: 15-30days.

Shipment service: Door to Door (By courier)

By Air

By Ocean.

Screw Shaft Features Explained

Threads

Lead

Pitch

Helix angle

Size

Shape

Lubrication

China manufacturer Hex Grub Screw Nylon Tipped Set Screw with White Tip with Hot selling

China Professional Rubber Recess Former with Threaded Rod Building and Construction with Great quality

Product Description

Product Description

1. Suitable for fremida anchors,like erection anchors, 2 hole anchors, spread anchors etc.
2. Material is crude rubber
3. Colour available: Black, yellow, red, green. or customized.
4. Stock available: 500-10000 pcs each size.
5. Packing: Knitting bags and plywood cases.
6. Can mark special logo according to requirements.

Qingde	Rubber Former of Lifting Anchor
Load rated [ton]	Size	Stud diameter	Material	Weight
Load rated [ton]	Size	Stud diameter	Material	[kg]
1.3	1.3T	10	Pvc/Rubber	0.12
2.5	2.5T	14	Pvc/Rubber	0.3
5	5.0T	20	Pvc/Rubber	0.32
10	10.0T	28	Pvc/Rubber	0.59
20	20.0T	38	Pvc/Rubber	1.34
32	32.0T	50	Pvc/Rubber

Qingde	Rubber Former of Erection Anchor
Load rated [ton]	Size	Material	Weight
			[kg]
1.25	1.25T	Pvc/Rubber	0.05
2.5	2.5T	Pvc/Rubber	0.096
5	5.0T	Pvc/Rubber	0.36
10	10.0T	Pvc/Rubber	0.89

Company Introduction

HangZhou Qingde Precast Accessories Co. Ltd. Specialized in producing precast accessories for concrete precast products. Such as spherical head anchors, eye anchors, lifting clutch, fixing socket, lifting socket, waved anchor, channel anchor, rubber former, etc.
We insist on providing good quality products, with suitable prices and fast delivery for our clients. We have special testing machine. And also can provide third party test report.

FAQ
Q1: what products are you company producing?
We are manufacture many kind of hardware products,the normal products like screws,washers,shafts,springs;the customized products like the stamping parts,cnc turning and milling parts,lathe parts and so on.We are produce these hardware products according to your samples or drawings .

Q2:How do your company control the products’ quality?
Well,as we all know that the quality comes first during the businesses with our customers that we always persist in “Quality is the life of enterprise.we are using the first confirmed cases, production inspection, packaging seized the entire combination to control products quality strictly.

Q3:Are you a manufacture company or trade company?
we are a professional hardware manufacture company with over 10 years history,we have our own factory with complete hardware produce equipments and professional engineers that we can produce out perfectly products according to your requirements.

Q4:How about your products’ price?
Well, we are insisting on the “win-win” principle.With the most advantageous price,to help our clients to gain more market share, so as to win more business.

Q5.Can you do customization if i need?
Yes, we can supply customized products as your requirements.

Q6: How to order?
(1)You send us drawing or sample;(2)We carry through project assessment;(3)We give you a design;(4)You think the design is ok;(5)We make the sample and send it to you. (6)You think the sample is good then place an order and pay us 30% deposit;(7)We start to make the product;(8)When the goods is done, we deliver it to Shengzhen Yiantian;(9)You pay us the balance after you see the B/L Copy;(10)The whole order is done, thank you!!

The Four Basic Components of a Screw Shaft

There are 4 basic components of a screw shaft: the Head, the Thread angle, and the Threaded shank. These components determine the length, shape, and quality of a screw. Understanding how these components work together can make purchasing screws easier. This article will cover these important factors and more. Once you know these, you can select the right type of screw for your project. If you need help choosing the correct type of screw, contact a qualified screw dealer.

Thread angle

The angle of a thread on a screw shaft is the difference between the 2 sides of the thread. Threads that are unified have a 60 degree angle. Screws have 2 parts: a major diameter, also known as the screw’s outside diameter, and a minor diameter, or the screw’s root diameter. A screw or nut has a major diameter and a minor diameter. Each has its own angle, but they all have 1 thing in common – the angle of thread is measured perpendicularly to the screw’s axis.
The pitch of a screw depends on the helix angle of the thread. In a single-start screw, the lead is equal to the pitch, and the thread angle of a multiple-start screw is based on the number of starts. Alternatively, you can use a square-threaded screw. Its square thread minimizes the contact surface between the nut and the screw, which improves efficiency and performance. A square thread requires fewer motors to transfer the same load, making it a good choice for heavy-duty applications.
A screw thread has 4 components. First, there is the pitch. This is the distance between the top and bottom surface of a nut. This is the distance the thread travels in a full revolution of the screw. Next, there is the pitch surface, which is the imaginary cylinder formed by the average of the crest and root height of each tooth. Next, there is the pitch angle, which is the angle between the pitch surface and the gear axis.
screwshaft

Head

There are 3 types of head for screws: flat, round, and hexagonal. They are used in industrial applications and have a flat outer face and a conical interior. Some varieties have a tamper-resistant pin in the head. These are usually used in the fabrication of bicycle parts. Some are lightweight, and can be easily carried from 1 place to another. This article will explain what each type of head is used for, and how to choose the right 1 for your screw.
The major diameter is the largest diameter of the thread. This is the distance between the crest and the root of the thread. The minor diameter is the smaller diameter and is the distance between the major and minor diameters. The minor diameter is half the major diameter. The major diameter is the upper surface of the thread. The minor diameter corresponds to the lower extreme of the thread. The thread angle is proportional to the distance between the major and minor diameters.
Lead screws are a more affordable option. They are easier to manufacture and less expensive than ball screws. They are also more efficient in vertical applications and low-speed operations. Some types of lead screws are also self-locking, and have a high coefficient of friction. Lead screws also have fewer parts. These types of screw shafts are available in various sizes and shapes. If you’re wondering which type of head of screw shaft to buy, this article is for you.

Threaded shank

Wood screws are made up of 2 parts: the head and the shank. The shank is not threaded all the way up. It is only partially threaded and contains the drive. This makes them less likely to overheat. Heads on wood screws include Oval, Round, Hex, Modified Truss, and Flat. Some of these are considered the “top” of the screw.
Screws come in many sizes and thread pitches. An M8 screw has a 1.25-mm thread pitch. The pitch indicates the distance between 2 identical threads. A pitch of 1 is greater than the other. The other is smaller and coarse. In most cases, the pitch of a screw is indicated by the letter M followed by the diameter in millimetres. Unless otherwise stated, the pitch of a screw is greater than its diameter.
Generally, the shank diameter is smaller than the head diameter. A nut with a drilled shank is commonly used. Moreover, a cotter pin nut is similar to a castle nut. Internal threads are usually created using a special tap for very hard metals. This tap must be followed by a regular tap. Slotted machine screws are usually sold packaged with nuts. Lastly, studs are often used in automotive and machine applications.
In general, screws with a metric thread are more difficult to install and remove. Fortunately, there are many different types of screw threads, which make replacing screws a breeze. In addition to these different sizes, many of these screws have safety wire holes to keep them from falling. These are just some of the differences between threaded screw and non-threaded. There are many different types of screw threads, and choosing the right 1 will depend on your needs and your budget.
screwshaft

Point

There are 3 types of screw heads with points: cone, oval, and half-dog. Each point is designed for a particular application, which determines its shape and tip. For screw applications, cone, oval, and half-dog points are common. Full dog points are not common, and they are available in a limited number of sizes and lengths. According to ASTM standards, point penetration contributes as much as 15% of the total holding power of the screw, but a cone-shaped point may be more preferred in some circumstances.
There are several types of set screws, each with its own advantage. Flat-head screws reduce indentation and frequent adjustment. Dog-point screws help maintain a secure grip by securing the collar to the screw shaft. Cup-point set screws, on the other hand, provide a slip-resistant connection. The diameter of a cup-point screw is usually half of its shaft diameter. If the screw is too small, it may slack and cause the screw collar to slip.
The UNF series has a larger area for tensile stress than coarse threads and is less prone to stripping. It’s used for external threads, limited engagement, and thinner walls. When using a UNF, always use a standard tap before a specialized tap. For example, a screw with a UNF point is the same size as a type C screw but with a shorter length.

Spacer

A spacer is an insulating material that sits between 2 parts and centers the shaft of a screw or other fastener. Spacers come in different sizes and shapes. Some of them are made of Teflon, which is thin and has a low coefficient of friction. Other materials used for spacers include steel, which is durable and works well in many applications. Plastic spacers are available in various thicknesses, ranging from 4.6 to 8 mm. They’re suitable for mounting gears and other items that require less contact surface.
These devices are used for precision fastening applications and are essential fastener accessories. They create clearance gaps between the 2 joined surfaces or components and enable the screw or bolt to be torqued correctly. Here’s a quick guide to help you choose the right spacer for the job. There are many different spacers available, and you should never be without one. All you need is a little research and common sense. And once you’re satisfied with your purchase, you can make a more informed decision.
A spacer is a component that allows the components to be spaced appropriately along a screw shaft. This tool is used to keep space between 2 objects, such as the spinning wheel and an adjacent metal structure. It also helps ensure that a competition game piece doesn’t rub against an adjacent metal structure. In addition to its common use, spacers can be used in many different situations. The next time you need a spacer, remember to check that the hole in your screw is threaded.
screwshaft

Nut

A nut is a simple device used to secure a screw shaft. The nut is fixed on each end of the screw shaft and rotates along its length. The nut is rotated by a motor, usually a stepper motor, which uses beam coupling to accommodate misalignments in the high-speed movement of the screw. Nuts are used to secure screw shafts to machined parts, and also to mount bearings on adapter sleeves and withdrawal sleeves.
There are several types of nut for screw shafts. Some have radial anti-backlash properties, which prevent unwanted radial clearances. In addition, they are designed to compensate for thread wear. Several nut styles are available, including anti-backlash radial nuts, which have a spring that pushes down on the nut’s flexible fingers. Axial anti-backlash nuts also provide thread-locking properties.
To install a ball nut, you must first align the tangs of the ball and nut. Then, you must place the adjusting nut on the shaft and tighten it against the spacer and spring washer. Then, you need to lubricate the threads, the ball grooves, and the spring washers. Once you’ve installed the nut, you can now install the ball screw assembly.
A nut for screw shaft can be made with either a ball or a socket. These types differ from hex nuts in that they don’t need end support bearings, and are rigidly mounted at the ends. These screws can also have internal cooling mechanisms to improve rigidity. In this way, they are easier to tension than rotating screws. You can also buy hollow stationary screws for rotator nut assemblies. This type is great for applications requiring high heat and wide temperature changes, but you should be sure to follow the manufacturer’s instructions.

China Professional Rubber Recess Former with Threaded Rod Building and Construction with Great quality

China best NEMA 23 Z Axis Lead Screw Linear Actuator Stepper Motor with high quality

Product Description

nema 23 z axis lead screw linear actuator stepper motor

1. Features of 23HS linear stepper motor
Motor length: 41-100mm
Current: 2.0-4.2A
Wire: 4 wires
Torque: 55-250N.cm

2. Specifications of 23HS linear stepper motor

Note: It’s the typical specification for reference only, We can customize per your requirement.

Company Profile

1. About us
Main Products: 1) DC Brush motor: 6-130mm diameter, 0.01-1000W output power
2) DC Spur Gear Motor: 12-110mm diameter, 0.1-300W output power
3) DC Planeary Gear Motor: 10-82mm diameter, 0.1-100W output power
4) Brushless DC Motor: 28-110mm, 5-1500W output power
5) Stepper Motor: NEMA 08 to NEMA 43, Can with gearbox and lead screw
6) Servo Motor: 42mm to 130mm diameter, 50-4000w
7) AC Gear Motor: 49 to 100mm diameter, 6-140 output power

2. Production

Production line

Packing&Delivery

Certifications

Customer Visits

FAQ
Q: What’s your main products?
A:We currently produce Brushed Dc Motors, Brushed Dc gear Motors, Planetary Dc Gear Motors, Brushless Dc Motors, Stepper motors and Ac Motors etc. You can check the specifications for above motors on our website and you can email us to recommend needed motors per your specification too.

Q:How to select a suitable motor?
A:If you have motor pictures or drawings to show us, or you have detailed specs like voltage, speed, torque, motor size, working mode of the motor, needed life time and noise level etc, please do not hesitate to let us know, then we can recommend suitable motor per your request accordingly.

Q: Do you have customized service for your standard motors?
A:Yes, we can customize per your request for the voltage, speed, torque and shaft size/shape. If you need additional wires/cables soldered on the terminal or need to add connectors, or capacitors or EMC we can make it too.

Q: you have individual design service for motors?
A:Yes, we would like to design motors individually for our customers, but it may need some CZPT charge and design charge.

Q:Can I have samples for testing first?
A:Yes, definitely you can. After confirmed the needed motor specs, we will quote and provide a proforma invoice for samples, once we get the payment, we will get a PASS from our account department to proceed samples accordingly.

Q:How do you make sure motor quality?
A:We have our own inspection procedures: for incoming materials, we have signed sample and drawing to make sure qualified incoming materials; for production process, we have tour inspection in the process and final inspection to make sure qualified products before shipping.

Q:What’s your lead time?
A:Generally speaking, our regular standard product will need 25-30days, a bit longer for customized products. But we are very flexible on the lead time, it will depend on the specific orders

Q:What’s your payment term?
A:For all our new customers, we will need 40% deposite, 60% paid before shipment.

Q:When will you reply after got my inquiries?
A:We will respond within 24 hours once get your inquires.

Q:How can I trust you to make sure my money is safe?
A:We are certified by the third party SGS and we have exported to over 85 countries up to June.2017. You can check our reputation with our current customers in your country (if our customers do not mind), or you can order via alibaba to get trade assurance from alibaba to make sure your money is safe.

Q:What’s the minimum order quantity?
A:Our minimum order quantity depends on different motor models, please email us to check. Also, we usually do not accept personal use motor orders.

Q:What’s your shipping method for motors?
A:For samples and packages less than 100kg, we usually suggest express shipping; For heavy packages, we usually suggest air shipping or sea shipping. But it all depends on our customers’ needs.

Q:What certifications do you have?
A:We currently have CE and ROSH certifications.

Q:Can you send me your price list?
A:Since we have hundreds of different products, and price varies per different specifications, we are not CZPT to offer a price list. But we can quote within 24 hours once got your inquiries to make sure you can get the price in time.

Q:Can I visit your company?
A:Yes, welcome to visit our company, but please let us know at least 2 weeks in advance to help us make sure no other meetings during the day you visit us. Thanks!

The Four Basic Components of a Screw Shaft

Thread angle

Head

Threaded shank

Point

Spacer

Nut

China best NEMA 23 Z Axis Lead Screw Linear Actuator Stepper Motor with high quality