Ball Screw Bearings

タイトルまたは説明

Ball Screw bearing

Keywords: ball screw, ball screw nut, single ball screw, double ball screw

 Specification:
1.Rolled and grouded type are available.
2.Max length 6 meters.
3.The grade is C*-C*0,P*-P7
4.Max diameter:*3mm  

Applications: IT industry, automobiles, household appliances, machine tools, railways, steel, engineering machinery, petrochemical machinery. Widely used in CNC machine tools, electronic equipment, automation equipment, laser equipment, medical equipment and other fields.  

A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. 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.