Precision bearings for recirculating ball screws

Ball screw bearings are precision components that transform rotary motion into linear motion (or vice versa). They are increasingly used in robot technology, precision machine tools and precision measuring instruments.

Axial angular contact ball bearings are manufactured for ball screws of all sizes and are particularly easy to install thanks to their adjustable preload and their 60 °contact angle.

The TMB/TAB series is designed for high-durability and for uniform load distribution. These are its main features:   

• High stiffness: these bearings are designed with polyamide cages and a greater number of balls than conventional angular contact ball bearings. For these reasons, bearing stiffness is greater than conventional bearings.
• Easy fitting and adjustment: these bearings are supplied with a pre-set preload, so difficult adjustment and torque measurement is eliminated.

Simplified bearing mounting structure: these bearings are supplied with a 60° contact angle so radial and thrust load combinations can be sustained. This results in a simplified and compact shaft and housing design.