Jinan Dunmu Electrical And Mechanical Co., Ltd.
Main products:Linear bearings ball screws,Linear guide,Self-lubricating bearings,All imports of domestic bearings,Anglar ball bearing,Standard parts,Stainless steel,Building materials,Hardware,Labor protection products,Spherical Roller Bearing,Linear Shaft,Stud type tr
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Contact Us
  • Contact Person : Mr. Zhang Houcai
  • Company Name : Jinan Dunmu Electrical And Mechanical Co., Ltd.
  • Tel : 86-0531-88638467
  • Fax : 86-0531-88638467
  • Address : Shandong,Jinan,Flyover District of Jinan City, Shandong Province, Alexandra Road, a layer of 198 A, Room 105
  • Country/Region : China
  • Zip : 250031

supply SFU2020 single ball screw made in china

supply SFU2020 single ball screw made in china
Product Detailed
1,SFU2020 single ball screw made in China 2,OEM service

SFU2020 single ball screw made in China

All the above sizes available.

Ball screws are used in aircraft and missiles to move control surfaces, especially for electric fly by wire. They are also used in machine tools, robots and precision assembly equipment. High precision ball screws are used in steppers for semiconductor manufacturing.

In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls.

To maintain their inherent accuracy and ensure long life, great care is needed to avoid contamination with dirt and abrasive particles. This may be achieved by using rubber or leather bellows to completely or partially enclose the working surfaces. Another solution is to use a positive pressure of filtered air when they are used in a semi-sealed or open enclosure.

While reducing friction, ball screws can operate with some preload, effectively eliminating backlash (slop) between input (rotation) and output (linear motion). This feature is essential when they are used in computer-controlled motion-control systems, e.g. CNC machine tools and high precision motion applications (e.g. wire bonding).

Depending upon their lead angle, ball screws can be back-driven due to their low internal friction (i.e. the screw shaft can be driven linearly to rotate the ball nut). They are usually undesirable for hand-fed machine tools, as the stiffness of a servo motor is required to keep the cutter from grabbing the work and self feeding, that is, where the cutter and workpiece exceed the optimum feedrate and effectively jam or crash together, ruining the cutter and workpiece. Cost is also a major factor as Acme screws are cheaper to manufacture.

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supply SFU2020 single ball screw made in china



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