The Difference Between a Ball Screw and an Ordinary Screw

- Sep 20, 2017 -

1, transmission efficiency.

The transmission efficiency of the ball screw is about 90~96%, and the transmission efficiency of the trapezoidal screw is about 26~46%. That is, if the same large load is used, the ball screw can use smaller driving power, such as a smaller power motor, which can reduce costs and reduce energy consumption.

2, transmission speed.

The ball screw is trapezoidal screw rolling friction, sliding friction and work Shengyuan temperature lower than the latter, so you can take high-speed transmission tasks.

3. Service life.

The surface damage of rolling friction is much smaller than that of sliding friction, so the maintenance life of ball screw is much higher than that of trapezoidal screw when cleaning, lubrication and other conditions are met.

4, self-locking.

Generally, the self-locking performance is inversely proportional to the transmission efficiency. Therefore, the ball screw has almost no self-locking performance, while the trapezoidal screw has a certain degree of self-locking (depending on the size of the lead angle and the roughness of the face).

5, economy.

Judging from the past and present situation, the ball screw is higher than the trapezoidal lead screw because of its complicated structure and trapezoid lead screw. However, as automation equipment increases and production increases, the price difference is getting smaller.