Planetary Ball Screw Assembly

In ball screw assemblies, freely rolling balls transmit force and motion between the screw shaft and nut. This transmission structure replaces the direct contact between screw and nut of traditional sliding screws, substituting low-resistance rolling friction for conventional sliding friction. The drastically reduced friction greatly improves transmission efficiency of ball screw assemblies. Precision ball screw assemblies achieve an efficiency of over 90%, compared to only 20%~30% for sliding screw drives. The driving torque is reduced to roughly one-third of that of sliding screws, while heat generation is significantly cut down.

Low temperature rise during operation, pre-stretching of the screw to compensate thermal elongation, and preloading to eliminate axial backlash jointly endow the ball screw assembly with superior positioning accuracy and repeat positioning accuracy.

Precision ball screw assemblies feature minimal friction during operation, enabling ultra-high travel speeds to meet heavy-load and high-speed working requirements.

Precision ball screw assemblies adopt preloading to eliminate axial backlash. Though this slightly increases friction and lowers partial efficiency, it delivers high transmission rigidity and drastically reduces axial return clearance.

Benefiting from smooth running performance, zero axial backlash and consistent manufacturing tolerance, multiple ball screw assemblies driving a single equipment or multiple components can maintain excellent motion synchronization.

Strict controls over raceway profile accuracy, surface hardness and raw material selection guarantee an extremely long actual service life for precision ball screw assemblies.

Free from the viscous friction found in sliding screws, ball screw assemblies eliminate stick-slip during operation. They smoothly realize bidirectional transmission: converting rotary motion to linear motion, and linear motion back to rotary motion.