What is Ball Screw?

- Sep 20, 2017-

A ball screw is an ideal product that converts rotational motion into linear motion, or converts a linear motion into a rotational motion.

The ball screw by screw, nut and ball. Its function is to change the rotational motion into linear motion, which is the further extension and development of ball screws. The important meaning of this development is to change the bearings from rolling motion to sliding motion. Because of its small friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

The ball screw is the most commonly used transmission components of machine tools and precision machinery, its main function is to convert rotary motion into linear motion, or torque into axial force repeatedly, characteristics of both high precision and high efficiency, reversibility.

The characteristics of the ball screw::

1 、 compared with the sliding screw, the driving torque is 1/3

Because there are many ball bearings between the screw shaft of the ball screw pair and the silk mother, the rolling motion can be achieved, so the higher movement efficiency can be obtained.  Compared with the past sliding screw pair, the drive torque is less than 1/3, that is, the power required to achieve the same movement result is the 1/3 of the rolling screw pair. It's very helpful in saving electricity.

2 、 high accuracy guarantee

The ball screw is for mechanical equipment made in Japan, the world's highest level of coherence produced, especially in grinding, assembly, inspection of the operations of the factory environment, carry out strict control of temperature and humidity, due to the improvement of the quality management system to guarantee the accuracy.

3, micro feed possible

Because of the ball motion, the starting torque of the ball screw pair is very small, and the crawling phenomenon like sliding motion can not occur, and the accurate micro feed can be ensured.

4 、 no backlash and high rigidity

The ball screw can be added to the pressure, pressure due to the axial clearance can reach negative, then get high rigidity (ball screw in the ball through to add to the pressure in the actual use mechanical devices, because the ball screw can make the repulsion of the rigidity of the Department of enhancement).