Generators had a ball bearing on one end of the armature and a bushing on the other end.
The ball bearing race housings are instrumented with thermistors to measure the temperature.
On bi-parting tracks, provide two-wheel nylon or ball bearing end pulleys with zinc-coated steel housing at each end.
Precision ball bearing, full extension drawer suspensions used on all drawers.
All axial or thrust loads are taken by a large ball bearing at the apex end of the horn.
British Dictionary definitions for ball bearing
a bearing consisting of a number of hard steel balls rolling between a metal sleeve fitted over the rotating shaft and an outer sleeve held in the bearing housing, so reducing friction between moving parts while providing support for the shaft