Product Description

Professional Factory CNC Machine 3D Printer Aluminum Alloy or Plastic Linear Motion Xihu (West Lake) Dis. Rail Shaft Block Slide Ball Bearing (SBR TBR CZPT LM LME LMF LMK KH)

Product Description

Linear bearings are widely used in electronic equipment, pull tester and the digital three-dimensional coordinate measuring device, such as precision equipment, as well as multi-axis machine tools, press, tool grinder, automatic gas cutting machine, printer, card sorting machine, food packaging machines and other industrial machinery sliding components.
Type	LM..UU;LME..UU;LM…LUU;LME..LUU;LM..OP; LMF..UU/LUU;LMK..UU/LUU;LMH..UU/LUU; KH
Model number	LM bearing: LM3,LM4UU,LM5UU,LM6UU,LM8UU,LM8S,LM10UU,LM12UU,LM13UU,LM16UU,LM20UU,LM25UU,LM30UU, LM35UU,LM40UU,              LM50UU,LM60UU, LM80UU,LM100UU LME linear bearing:  LME3UU,LME4UU,LME5UU,LME6UU,LME8UU,LME8S,LME10UU,LME12UU,LME13UU, LME16UU,LME20UU,LME25UU,LME30UU,LME35UU,LME40UU,LME50UU,LME60UU, LME80UU,LME100UU  LM Open Series linear bearing: LM10OPUU,LM12OPUU,LM13OPUU,LM16OPUU,LM20OPUU,LM25OPUU, LM30OPUU,LM35OPUU,LM40OPUU,LM50OPUU,LM60OPUU,LM80OPUU,LM100OPUU Flange type linear bearing: LMF6UU,LMF8UU,LMF10UU,LMF12UU,LMF13UU,LMF16UU,LMF20UU,LMF25UU,LMF30UU, LMF35UU,LMF40UU,LMF50UU,LMF60UU LMK6UU,LMK8UU,LMK10UU,LMK12UU,LMK13UU,LMK16UU,LMK20UU,LMK25UU,LMK30UU,LMK35UU,LMK40UU,LMK50UU,LMK60UU LMH6UU,LMH8UU,LMH10UU,LMH12UU,LMH13UU,LMH16UU,LMH20UU,LMH25UU,LMH30UU KH type linear bearing:  KH0622PP,KH0824PP,KH1026PP,KH1228PP,KH1630PP,KH2030PP, KH2540PP,KH3050PP,KH4060PP,KH5070PP
Material	Gcr15 steel
Application	Machine centers,Machine tools,Precision machining machines,Heavy cutting machines, Punching machines,Marble cutting machines,Automatic equipments,Grinding machines,High speed transfer equipments,Injection molding machines,Measuring equipments

Aluminium Linear Ball Bearing Slide Unit
Model number	Supported Liner Rail: SBR16,20,25,30,35,40,50; TBR16,20,25,30  Length:0-6000mm SBR..UU:  SBR10UU, SBR12UU, SBR16UU, SBR20UU, SBR25UU, SBR30UU, SBR35UU,SBR40UU, SBR50UU; SBR…LUU:SBR10LUU,SBR12LUU,SBR16LUU,SBR20LUU,SBR25LUU,SBR30LUU,SBR35LUU,SBR40LUU,SBR50LUU TBR..UU: TBR16UU, TBR20UU, TBR25UU, TBR30UU;TBR…LUU:TBR16LUU, TBR20LUU, TBR25LUU, TBR30LUU SCS..UU:SCS6UU,SCS8UU,SCS10UU,SCS12UU,SCS13UU,SCS16UU,SCS20UU,SCS25UU,SCS30UU,SCS35UU,SCS40UU,SCS50UU SCS..LUU:SCS8LUU,SCS10LUU,SCS12LUU,SCS13LUU,SCS16LUU,SCS20LUU,SCS25LUU,SCS30LUU,SCS35LUU,SCS40LUU,SCS50LUU SC..VUU: SC8VUU,SC10VUU,SC12VUU,SC13VUU,SC16VUU,SC20VUU,SC25VUU,SC30VUU,SC35VUU,SC40VUU, SC50VUU SHF..A:SHF8,SHF10,SHF12,SHF13,SHF16,SHF20,SHF25,SHF30,SHF35,SHF40,SHF50 SH..A(SK):SK8,SK10,SK12,SK13,SK16,SK20,SK25,SK30,SK35,SK40,SK50,SK60
Material	Aluminum Alloy
Appearance	Anodized surface, high hardness, corrosion resistance, not rust, low noise
Application	3D printer, milling machine, CNC engine lathe, gear shaper, hobbing, precision machine tools, robotics, semiconductor, electric tools, sports equipment, woodworking machinery, food machinery, medical machinery, textile machinery, optical instruments, glass manufacturing, automobile manufacturing equipment, automation equipment, laser engraving, blanket machinery, ceramic tile machinery, printing machinery, electronic industry, man-made board bearing equipment, machinery, paper machinery, plastic machinery, inspection devices, transmission equipment, packaging machinery, textile machinery
OEM&Customized	Accepted to drawing

 

Detailed Photos

 

 

Company Profile

 

HangZhou City CZPT Bearing Co., Ltd. is a professional manufacturer of linear motion products with many years’ experience. We are specialized in the producing linear shaft, linear guides, ball screws,  linear bearings, linear CZPT blocks, ball screw end supports, linear rails, cam followers with good quality and competitive price. Our company is located in HangZhou city, ZHangZhoug province, close to HangZhou port and HangZhou city.

Our products are widely used in precise machines, fitness equipment, printing machines, packing machines, medical and food machines, textile machinery and other machines and supplementary equipment. Our products sell well in North America, West Europe, Australia, Southeast Asia, Middle East, South America and other regions.

After Sales Service

Our Quality: 

Quality is the life . We use only the best quality material to ensure the standard of our product range is of the highest caliber.All products we sold out are strictly selected and tested by our QC department.
Warranty: 
All products may have problem after used by a period of time. We provide 1 year warranty for all products. 
Payment: 
We accept payment via TT (Bank transfer), Paypal,Western Union, and Money Gram.
We accept bank transfer for large orders. For small order, you’d better pay via Paypal,Western union or Money Gram
Shipping: 
We offer as many shipping options as possible, including DHL, UPS, TNT, FEDEX and EMS, Airfreight and by Sea.

FAQ

1. Are you factory or trading company?

We are professional manufacturer with most competitive price and high quality, 15 year’s experience.

2.What’s your product range?
We are specialized in producing linear shafts, linear bearings, linear guides, linear rails, ball screws,cam follower and other linear motion units.

3.Do you offer OEM&ODM services?
Yes, OEM, ODM is welcomed

4.How Can I get some samples?
We are honored to offer samples. You are requested to pay the shipping cost and some samples cost.

5.What does your factory do about quality control?
We uphold the tenet of “Quality is the future, we have passed ISO9001 certification, and we have strict procedures to control quality.

6. How can I get a quotation?
You can send quotation below or email to us. you can contact dirrectly with us through TM or WhatsApp,Skype as you like.Call any time if you are urgent.

 

Main Products

 

 

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.

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.

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.

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.