A cam is a simple mechanism that converts rotary motion (movement that goes round in a circle) into linear motion (movement in a straight line). These mechanisms can be found in car engines ...

[2n2r5] posted up a mechanism that we’d never seen before — a threadless ballscrew that turns rotational into linear motion with no backlash. It works by pressing the edge of three bearings ...

Planetary roller screw mechanisms (PRSM) are advanced mechanical systems that convert rotational motion into linear motion, commonly used in applications requiring high load capacity and precision ...

This custom linear Hall effect sensor is a perfect example ... There’s clearly a long way to go to tighten things up, but the basic mechanism looks like a clear win to us. Hats off to [Nixieguy ...