What are the characteristics of the ball screw support bearing characteristics

Ball screws are ideal for converting rotary motion into linear motion or linear motion into rotary motion. Ball screws are composed of screws, nuts and balls. Its function is to convert rotary motion into linear motion, which is a further extension and development of the ball screw, the development of this important significance is the bearing from rolling action into sliding action. Because of the small friction resistance, ball screws are widely used in a variety of industrial equipment and precision instruments.

Performance characteristics of ball screws:

High efficiency: Because the ball screws between the nut and the screw to achieve rolling friction by rolling the ball, compared with a variety of sliding helix, ball screws can be as high as 97% of the transmission efficiency, which reduces the drive torque to less than 1 / 3.

Preloading and high rigidity: there are preloading requirements, ball screws may be over the displacement guide, double nut preloading and other methods to achieve preloading between the nut and the screw, to eliminate the axial clearance or to achieve negative clearance. In the case of applying preload, the axial rigidity of ball screws can be greatly improved.

High life: ball screws of the nut, screw hardness are up to HRC58-62, ball hardness to HRC62-66, and they are rolling friction. Therefore, ball screws can realize high fatigue life and precision life under the premise of proper design.

Can realize micro and high-speed feed: ball screws do not produce such as sliding spiral creep phenomenon, so it can realize the correct micro-feeding, as long as the feed pulse is small enough, ball screws can be realized sub-micron feed. And because of the ball screw sub low heat, and can make large lead screw, so can realize high speed feed; in the guarantee is lower than the ball screw sub critical speed under the premise of large lead ball screw sub can realize 100m/min or even higher feed speed.