Ball screw support bearings are specially designed for use in ball screw or lead screw applications. Most ball screw support bearings are angular contact bearings with a steep contact angle, such as ...

Tolerates some misalignment. Same radial load as deep-groove bearings, but 2-3 times the thrust load. Duplex Set Two, matched bearings for use in ball screw support applications. Triplex Set Three, ...

In principle, these are very similar to lead screws but instead of a nut, there is a race containing ball bearings that moves up and down the screw. The ball bearings lead to less friction.