The linear bearing provides a low-friction, smooth and accurate linear motion for the carriage. Linear slides typically use a ball screw or lead screw supported by rotary bearings as a drive mechanism ...

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.

[2n2r5] posted up a mechanism that we’d never seen before — a threadless ballscrew that turns rotational into linear motion ... just like a screw thread would. As the bearings roll on, the ...

Screw type linear actuators generate motion via a turning screw ... The motion of the nut around the screw is assisted by the ball bearings. This reduces friction, distributes the load, and increases ...