Tag Archives: china motor

China factory 0.005mm High Tolerance Customized Aluminum Auto CNC Machining Parts Casting Metal Motor Spare Parts for Auto Car with Hot selling

Product Description

Custom Aluminum 6061 Turning Part Precision Steel CNC Fabrication sheet metal stamping Machining Parts

Available materials	Aluminum, Steel, Stainless Steel, Brass, Copper, Bronze, Nylon, POM, ABS, etc
Tolerance	0.005mm~0.1mm
Surface Roughness	Ra 0.8-Ra3.2
DRW format	.jpg/.pdf/.dxf/.dwg/.igs./.stp/x_t. etc
Equipment	CNC Machining center, CNC Lathe, Turning machine, Milling machine, Drilling machine, Internal and external grinding machine, Cylindrical grinding machine, Tapping drilling machine, Wire cutting machine, polishing machine etc.
Capacity	10,000pieces per month
MOQ	50pcs for small parts;10pcs for big parts, according to your drawings
QC System	100% inspection before shipment
Payment term	T/T, PayPal, West Union,etc
Surface treatment	Anodizing, sandblasting,Powder Coating, zinc/chrome/nickel/silver/gold Plating, Polish, Nitriding, Blacking, Painting, Heat treatment etc
Other services	CNC engrave, Laser engrave, silk printing, Knurling
Shipment Terms:	1) 0-500kg: air freight priority
	2) >500kg: sea freight priority
	3) As per customized specifications
Packing	1. Prevent from damage.
Available materials	2. Foam and paper box or wooden box.
Available materials	3. As to customers’ requirements, in good condition
Lead time	15~25 days, as to your quantity

Package

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
screwshaft

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
screwshaft

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
screwshaft

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China factory 0.005mm High Tolerance Customized Aluminum Auto CNC Machining Parts Casting Metal Motor Spare Parts for Auto Car with Hot selling

China Best Sales CZPT Magnetic Pump China Chemical Pump Suppliers 12V/48V Solar Power Water Pump Motor 4 Inches Solar Centrifugal Pump Magnetic Drive Pump with Good quality

Product Description

HangZhou CZPT Mechanical Seals Co., Ltd.

Add: Room 811, 8th Floor, CZPT Plaza, Xihu (West Lake) Dis. Street, Xihu (West Lake) Dis. District, HangZhou

MDX Magnetic Pump Series

MDX-441
The main components are modular and can be quickly disassembled and inspected. Maintenance is very easy.

MDX-542
The main parts of the pump have good corrosion resistance. For example, the pump shaft is made of ceramic and SIC. Ceramics can be used for general low-corrosive liquids, and SIC can resist high-corrosive liquids.

RUIXIAN MAGNETIC PUMP CHINA CHEMICAL PUMP SUPPLIERS 12V/48V SOLAR POWER WATER PUMP MOTOR 4 INCHES SOLAR CENTRIFUGAL PUMP MAGNETIC DRIVE PUMP

Product Description

Specifications

Model	Inlet x Outlet	Specific Qravity	Rated Capacity (L/min)	Rated Head (m)	Max. Capacity (L/min)	Max. Head (m)	Motor output (kW)
MDX-440	40A x 40A	1.0	150/150	8.5Z8.5	280/280	12.5/11.5	0.37
MDX-441	40Ax40A	1.0	200/200	12/12	330/320	18/18.5	0.75
MDX-542	50A x 40A	1.0	250/250	16/16	400/400	24/24	1.5
MDX-552	50A x 50A	1.0	250/250	16/16	400/400	24/24	1.5
MDX-543	50A x 40A	1.0	300/300	18/18	500/500	26/26	2.2
MDX-553	50A x 50A	1.0	300/300	18/18	500/500	26/26	2.2

Dimensional drawing,part drawing

Type	w	H	L	a	b	c	d	e	f	g	I
MDX-440	140	225	440	110	54	98	95	130	87	150	12
MDX-441	160	255	493	130	72	130	115	140	103	181.5	12
MDX-542	260	280	512	208	80	200	120	160	89	148	14
MDX-552	260	280	512	208	80	200	120	160	89	148	14
MDX-543	260	280	532	208	80	200	120	160	89	148	14
MDX-553	260	280	532	208	80	200	120	160	89	148	14

Detailed Photos

FAQ

1. Q: Can I know more about your products?

A: Pls view our website:

2. Q: What’s your MOQ of this item?
A: 1~2PCS(sample order is welcome. )

3. Q: What is the lead time?
A: 15~30 days after receiving your payment, it depends on the pumps.

4. Q: What is the payment term?
A: Normally T/T in advance or L/C at sight. Others like D/P, Cash, Credit Card

5. Q: What is the product’s warranty?
A: The whole pump is warranted for 1 year, while the spare parts or wetting parts about the pump will be warranted for 3 months from the date of delivery.

6. Q: Are you a manufacturer or trading company?
A: We are a manufacturer specializing in water pumps and other pumps for more than 20 years.

Screw Shaft Types

If you’re looking for a screw shaft, but aren’t sure which type to buy, you’re in luck. In this article, we’ll talk about the different types, including Threaded shank, Round head, and Machined. Once you’ve read it, you’ll know which type to buy. Then, you can decide whether you want a ball screw nut or a threaded shank.

Machined screw shafts

Besides the standard stainless steel shaft, manufacturers also provide a variety of other materials, such as titanium, bronze, and brass. In addition to stainless steel, manufacturers also provide a variety of top-coating options, including zinc, brass, and chromium. Aluminum screws are not particularly durable and are easily affected by weather. Most screw shafts feature self-locking mechanisms. They are especially useful in C-clamps, vises, and screw-top container lids.
For applications where accuracy is vital, a ball screw shaft needs to be annealed. A heat treatment can be performed on the ball screw shaft to ensure that both ends are heated evenly. In this process, the shaft will be more durable, while maintaining its high-precision properties. These screw shafts are a key component in computer-controlled motion-control systems, wire bonding, and other industries that require high-precision and high-quality performance.
Depending on the material used, screw shafts can be made of stainless steel or titanium. High-precision CNC machines and lathes are typically used to manufacture screw shafts. Various shapes and sizes are available, each with a specific application. Whether you need a small or large screw, you can find 1 to fit your needs. And since each size requires a different material, your choice of material is important as well.
In general, the materials used for machining screw shafts are steel, stainless steel, titanium, brass, bronze, and aluminum. Metals that resist corrosion are also commonly used. Other materials for screw shafts are Teflon, nylon, and nylon. You can also find threaded screw shafts in materials such as porcelain, glass, and ceramic. If you want to use your screws in a unique material, consider purchasing a customized one.
screwshaft

Ball screw nuts

If you have a screw shaft, the last thing you want to worry about is the ball nut slipping off. To prevent this, you can place a temporary stop in the shaft’s grooves to ensure that the ball nut does not slide off. When you remove the stop, you can then install the ball screw nut. But, before you can install the ball screw nut, you have to make sure that you have a good grip on the shaft.
When selecting ball screw nuts, it’s important to consider how much preload you need to apply to avoid excessive backlash. Preloading eliminates this problem by making the ball nut compact. It also prevents backlash, which is lost motion caused by clearance between the ball and nut. Backlash disrupts repeatability and accuracy. This is where spacer preloading comes in. You can insert a spacer between the 2 ball nuts to transmit the force to the nut. However, you should keep in mind that this method reduces the load capacity of the ball screw.
The critical speed of a screw is the maximum rotating speed before it whips. This critical speed is influenced by several factors, including the diameter of the screw shaft, the number of support elements, and the material. By adjusting these factors, you can reduce the number of components used and the amount of time it takes to assemble the screw shaft. In addition, you can also reduce the number of components and avoid stacking tolerances. However, the critical speed of plastic nuts is limited due to sliding friction.
The ball screw nut has several characteristics that make it unique. Its most prominent feature is the presence of ball bearings. These balls help reduce friction between the screw nut and the shaft. Without ball bearings, the friction would be too high to function properly. Another important characteristic is the groove profile of the nut and ball. These 2 features ensure that the ball and the nut meet at 2 points. You’ll be amazed by the results of the work of these ball screw nuts.
screwshaft

Threaded shank

Wood screws are usually not fully threaded because the shank has an unthreaded portion at the top. This shoulder part forces the screw to compress 2 pieces of wood, which prevents the screw from overheating and compromising the materials strength. As the screw is threaded partially up, it is not as difficult to remove as a fully threaded screw. However, it is important to note that a wood screw will not hold as tightly as 1 with a fully threaded shank.
In addition to being universal, screw threads can be of different sizes. For example, a M8 screw has a thread pitch of 1.25 mm. To avoid confusion, screw thread pitches are commonly given with a multiplication sign. For example, M8x1 means that the screw is 8 mm in diameter but has a thread pitch of 1 mm per 360-degree rotation. Those who are not familiar with these dimensions may find it confusing.
The OD of the threaded portion of a bolt is generally smaller than the OD of the nut. If the shank is too deep for the nut to fit, the threads may bottom out. This is why it’s important to use a thread-cutting bit with a small thread diameter. You can use a micrometer or caliper to measure the thread diameter. This tool will also allow you to easily identify which screw size fits where and how well.
The metric system is the most widely used. Fasteners with DIN numbers are generally metric in size. This makes them very useful for industrial settings. You can find metric-sized screws anywhere, as long as you buy them from a reputable manufacturer. These fasteners also come with a dog point, which is used for safety wire. If the screw needs to be replaced, the shank can be drilled with a hole for a safety wire or for a dog-point.

Round head

A round head screw is the most common type used for machine screws. Other common types include truss head, flat head, and hexed head. Each has a different profile and are used for different purposes. A round head screw is typically wider than a flat or a hexed head, and has a slightly rounded surface. These screws are useful for projects involving sheet metal or sheet-metal parts. Round heads are usually slightly wider than a hex head screw, and they may also be used as a substitute for washers in certain applications. However, truss heads are not necessary for every project.
A wood screw has a smooth shank that protrudes above the surface of the material it is attaching. A metal screw has a threaded shaft that is fully threaded from head to point, and a fully threaded shaft provides more bite. Two common head styles are round head and pan head. If the task requires the screw to be flush or countersunk, the round head will be the best choice.
Another type is the Reed & Prince screw drive. These are similar to Phillips screws but have a 75-degree V shape. They are commonly used in marine hardware and are also known as BNAE NFL22-070. This type is also used for steel plate hangers. In addition to round head and pan head screws, there are a variety of other screw types. You can even get a head with a slotted head if you know where to look.
Screw diameters are specified according to the ISO 261 or ISO 262 standards. An M8 screw has a diameter of 8.25 mm. The M8 screw has a pitch of 1.25 mm, which is equivalent to 1 mm per 360 degrees. There are several other standard screw sizes and thread diameters available. You can find them all by consulting the relevant standards. But remember, the metric system is the most popular.
screwshaft

Self-locking mechanism

A self-locking mechanism for a screw shaft is a device that secures the screw to its supporting member in a failure position. The locking mechanism provides a positive connection between the screw shaft and the control surface during normal operation, and locks the screw to its supporting member when the screw fails. Previous attempts to solve this problem have typically used secondary nuts with free play on the screw, which were intentionally designed to jam when loaded. However, such a device can be unreliable, which is why the present invention offers a more robust and reliable locking mechanism.
The self-locking function of a screw depends on several factors, including its pitch angle and the coefficient of friction of the threads. The angle of friction must be less than the tangent of the material pairing to prevent untightening of the screw. Screws with self-locking mechanisms have an efficiency e lower than 50%, which is less than half. Self-locking screws also have the benefit of being less efficient than a standard screw.
Unlike a normal screw, a self-locking screw can be turned in either direction. The nut 22 rotates with the screw shaft, and the member 23 is translated in an axial direction. Regardless of the direction of the rotation of the screw, this axial translation will result in the opposite moment to that input moment. While screw self-locking mechanisms are typically less expensive, they are more reliable and durable.
Another important feature of self-locking screws is that they are not susceptible to independent loosening. The screw cannot rotate without a certain amount of torque. In addition, a self-locking screw shaft must have a small wedge with a smaller half-angle than the arctangent of the static friction. This means that the torque applied by the driver must be greater than the torque needed to overcome the friction.

China Best Sales CZPT Magnetic Pump China Chemical Pump Suppliers 12V/48V Solar Power Water Pump Motor 4 Inches Solar Centrifugal Pump Magnetic Drive Pump with Good quality

China wholesaler NEMA 14 35mm Electronic Controller 0.4A Non-Captive Linear Stepper Motor with Ce, RoHS Certification Cheap Price and High Quality near me factory

Product Description

Casun stepper motor offers 2 phase ,3 phase hybrid stepper motor in 3 basic step angles :0.9 deg. 1.8deg. and 1.2 deg. and a wide rang e of frame size from Nema 8 (20mm) up to Nema 34 (86mm) , which also offers many axial options at the end of processing of the shaft ,hollow shaft ,dual shaft ,single flat shaft , double flat shat etc. Smaller rotary stepping motor find widely applications in3d printers and many robotics. The larger NEMA frames are common in CNC machines and industrial applications. OEM & ODM are available, your motors also can be customized as your requirements.

35mm electronic controller 0.4a nema 14 non-captive linear stepper motor with CE , ROHS certification

	CASUN 35SHD0303-T1
	Rated Current	0.4 A
	Rated Voltage:	8.0V
	Step angle:	1.8 degree
	Number of phase :	2 phase
	Shaft :	lead screw
	Wire :	4 wire
	Size :	35x35x20 mm
	Certification:	CE , ROHS

General Specifications :

Model	Holding torque	Rated current	Resistance per phase	Inductance per phase	Detent torque	Rotor inertia	Lead wire	Motor length
Model	mN.m	A	ohm	mH	mN.m	g.cm²	No.	mm
35SHD0001	100	0.4	20	20	8	12	4	26
35SHD0006	70	0.35	30	14.5	8	12	6
35SHD571	100	0.75	4.3	4.0	8	12	6
35SHD0018	70	0.5	10	5.5	8	12	6
35SHD5711	150	0.4	24	38	12	14	4	34
35SHD5712	150	0.75	5.8	9.5	12	14	4	34
35SHD0801	200	0.5	18	25.5	14	18	4	40
35SHD0803	200	1.2	2.5	3.8	14	18	4	40
35SHD0602	300	0.5	24	42	18	28	4	50

Above is our partial products parameter, for more products please contact us . Your samples can be customized.

Figure Dimensions:

Our company :
HangZhou Fude Electronic Technology Co., Ltd., established in 2011, engaged in stepper motor research , development, production and sales , are 1 of the hi-tech enterprises. After several years of technology researching and development, market development, we gradually become the 1 of best quality stepper motor manufacturers in China. In order to offer our best service and meet customer’s requirements , we all try our best to customize the motor and provide solutions.

Our company has numerous world-class clients all over the mainland China, ZheJiang , Europe and America, Japan, Korea and other countries or regions. Our products including hybrid stepper motor , lead screw stepper motor , planetary stepper motor with gearbox and closed loop stepper motor . They are widely used in robots, sculpture, laser machine , medical machine, stage lighting, 3d printer,, automation equipment, CZPT and other equipments.

Certifications:
1.We have pass ROHS & CE certifications
2.We have our own paten stepper motors.

Packing & Payment &Delivery :

Payment Term	T/T, PayPal, Western Union, Cash, Escrow
Accepted Payment Currency	USD, CNY
Packaging Detail	cusomized packages, poly bag/customized blister/color box etc. as per your need
Delivery Detail	10 Day(s)
Delivety Port	huangpu,luogang,HangZhou
Accepted Delivery Terms	FOB, EXW , CIF ,CFR etc

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 wholesaler NEMA 14 35mm Electronic Controller 0.4A Non-Captive Linear Stepper Motor with Ce, RoHS Certification Cheap Price and High Quality near me factory

China Professional OEM Electric Linear Stepper Gear Motor Actuator Controllers/Electric Car Conversion Kit near me manufacturer

Product Description

Below are only some typical models, for more information or a customed motor, pls contact us.

20BYZ-G Linear Motor
Basic Information
Item			Data
Tem. Rise			50K max
Working Tem.			(-20ºC~+80ºC)
Insulation Resistance			100MΩ min 500VDC
Surge Test Level			500VAC for 1min
Insulation Class			E
Weight			60g

The specification of OEM Linear Stepper gear Motor Actuator Controllers

Specification
PN	Step Angle	Voltage	Phase	Current	Resistance	Inductance	Push Force	Start Frequency	Rotate Frequency	Push Distance	Step Length
PN	(°)	V DC		mA	Ω	mH	g(200pps)	pps	pps	mm	mm
20BYZ-G	15	12	2	≤140	85	38	≥1	≥500	≥600	45	0.571
	15	12	2	≤250	50	35	≥1	≥500	≥600	45	0.571
	15	12	2	≤300	30	17	≥1	≥500	≥600	45	0.571
	15	5	2	≤350	15	10	≥1	≥500	≥600	45	0.571
	7.5	12	4	≤140	85	38	≥1	≥500	≥600	45	0.013
	7.5	12	4	≤250	50	35	≥1	≥500	≥600	45	0.013
	7.5	12	4	≤300	30	17	≥1	≥500	≥600	45	0.013
	7.5	5	4	≤350	15	10	≥1	≥500	≥600	45	0.013

The drawing of OEM Linear Stepper gear Motor Actuator Controllers

About our company
Probond motors designs brush, brushless, stepper, hysteresis and linear motors to meet customers requirements.

Our motors use standard and special components with customer selected torque/speed requirements that can be modified to your applications.

Probond motor owns professional sales team and engineer team with more than 10 years experience in motor industry, based on China mainland handling overseas business for years, we know your needs better than others.

Probond Sonicare Toothbrush Motor and Thermostatic Valve Hysteresis Motor are our hot products on sell in 2017 with highly quality level and competitive price.

Terms of Trade

Terms of price	FOB,CIF,CFR,EXW,DDP,etc.
Terms of payment	100% T/T in advance for samples
Terms of payment	Bulk quantity payment way can be negotited
Warranty	12 months limited warranty once the items are delivered to the buyer.
Lead time	Usually within 2 weeks for trial orders, within 3 weeks for bulk orders.
Package	Carton o plywood pallet.
Place of loading	ZheJiang , HangZhou, etc.
Shipment carrier	Items are usually shipped via Fedex,DHL, TNT,UPS,EMS for trial orders and via vessel for bulk orders.
Delivery time	Usually within 5 working days by Express 15-30 working days by vessel

Our promise to our Customers:
1. Answer customer’s inquiry within 2 working days.
2. Reply to our customer questions & Concerns within 3 working days.
3. Acknowledge Customer purchase orders within 24 hours.

Contact

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
screwshaft

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

China Professional OEM Electric Linear Stepper Gear Motor Actuator Controllers/Electric Car Conversion Kit near me manufacturer

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 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

China OEM 1.8 Degree Double Screw Shaft NEMA 8 Micro Stepper Motor (20SHD0002-100T1) with Best Sales

Product Description

1.8 Degree Double Screw Shaft NEMA 8 Micro Stepper Motor (20SHD0002-100T1)

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 (20SHD0002-100T1)

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 20SHD0002-100T1
General Specification		Electrical Specification
Step Angle	1.8°	Rated Voltage	3.72V
Number of Phase	2	Rated Current	0.3A
Insulation Resistance	100MΩmin. (500V DC)	Resistance per phase	12.4Ω±10%
Insulation Class	Class B	Inductance per Phase	3.6mH±20%
Rotor Inertia	2g.cm²	Holding torque	12mN.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.

What’s More

Welcome to customize all types of stepper motors

Please feel free to contact us !

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 1.8 Degree Double Screw Shaft NEMA 8 Micro Stepper Motor (20SHD0002-100T1) with Best Sales

China factory Electric Linear Stepper DC Motor with 7.5 / 15 Degree near me manufacturer

Product Description

Below are only some typical models, for more information or a customed motor, pls contact us.

20BYZ-G Linear Motor

Basic Information

Item

Data

Tem. Rise

50K max

Working Tem.

(-20ºC~+80ºC)

Insulation Resistance

1

Website: http://probondmotor

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 factory Electric Linear Stepper DC Motor with 7.5 / 15 Degree near me manufacturer

China OEM 1.8 Degree 42mm Tr6.5 Tr8 3D Printer NEMA 17 Lead Screw Linear Stepper Motor 2 Hybrid Screw Rod Stepper Motor for 3D Printer with Best Sales

Product Description

1.8 degree 42mm 2 hybrid screw rod stepper mot

Specification:

General Specification:

(Item)	(Specifications)
(Step Angle)	1.8°
(Temperature Rise)	80ºCmax
(Ambient Temperature)	-20ºC~+50ºC
(Insulation Resistance)	100 MΩ Min. ,500VDC
(Dielectric Strength):	500VAC for 1minute
(Shaft Radial Play)	0.02Max. (450g-load)
(Shaft Axial Play)	0.08Max. (450g-load)
(Max. radial force)	28N (20mm from the flange)
(Max. axial force)	10N

Model No.	Step Angle	Motor Length	Current /Phase	Resistance /Phase	Inductance /Phase	Holding Torque	# of Leads	Detent Torque	Rotor Inertia	Mass
Model No.	( °)	(L)mm	A	Ω	mH	N.m	No.	g.cm	g.cm	Kg
JK42HS25-0404	1.8	25	0.4	24	36	1.8	4	75	20	0.15
JK42HS34-1334	1.8	34	1.33	2.1	2.5	2.2	4	120	34	0.22
JK42HS40-1684	1.8	40	1.68	1.65	3.2	3.6	4	150	54	0.28
JK42HS48-1684	1.8	48	1.68	1.65	2.8	4.4	4	260	68	0.35
JK42HS60-1004	1.8	60	1.0	8	13	7.5	4	280	102	0.5

Above only for representative products, products of special request can be made according to the customer request.

Screw rod Specification:

Screw Diameter(mm)	Screw Lead(mm)	Screw Pitch(mm)	Travel per step(mm)	Screw Diameter(mm)	Screw Lead(mm)	Screw Pitch(mm)	Travel per step(mm)
Tr5	1	1	0.005	Tr8	8	2	0.04
Tr5	2	1	0.01		10	2	0.05
Tr6	2	1	0.01		12	2	0.06
	4	1	0.02		14	2	0.07
	6	1	0.03	Tr10	2	2	0.01
	12	2	0.06		3	1.5	0.015
Tr8	1	1	0.005		4	2	0.02
	2	2	0.01		8	2	0.04
	3	1.5	0.015		10	2	0.05
	4	2	0.02		12	2	0.06

Drawing:

Screws and Screw Shafts

Machined screw shaft

Ball screw nut

Self-locking property of screw shaft

Materials used to manufacture screw shaft

China OEM 1.8 Degree 42mm Tr6.5 Tr8 3D Printer NEMA 17 Lead Screw Linear Stepper Motor 2 Hybrid Screw Rod Stepper Motor for 3D Printer with Best Sales

China Good quality NEMA 8 Double Screw Shaft Linear Micro Stepper Motor (20SHD4255-100T1) with Great quality

Product Description

2571 Wholesale NEMA 8 Double Screw Shaft Linear Micro Stepper Motor

(20SHD4255-100T1)

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 (20SHD4255-100T1)

Motor Name: HYBRID STEPPER MOTOR

Size: NEMA 8 (20_*20_*38mm)

Feature: small volume, low noise, smooth running

The Outline Drawing of NEMA 8 Stepper Motor:

Casun HYBRID STEPPER MOTOR 20SHD4255-100T1
General Specification		Electrical Specification
Step Angle	1.8°	Rated Voltage	7.5V
Number of Phase	2	Rated Current	0.6A
Insulation Resistance	100MΩmin. (500V DC)	Resistance per phase	12.5Ω±10%
Insulation Class	Class B	Inductance per Phase	5.5mH±20%
Rotor Inertia	3.8g.cm²	Holding torque	40mN.m
Mass	0.08kg	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.

What’s More

Welcome to customize all types of stepper motors

Please feel free to contact us !

Screw Sizes and Their Uses

The major diameter of a screw shaft

The pitch diameter of a screw shaft

The thread depth of a screw shaft

The lead of a screw shaft

The thread angle of a screw shaft

The tapped hole (or nut) into which the screw fits

China Good quality NEMA 8 Double Screw Shaft Linear Micro Stepper Motor (20SHD4255-100T1) with Great quality