The simple machines are mechanisms that use an applied force ... It’s also found in lead screws such as those used in linear actuators found in everything from DVD players to CNC machines.

Keen-eyed readers will recall [Andy]’s recent scratch-built ball screw build ... were a great lesson in how to machine a complex mechanism to work in a constrained space. Still, it left folks ...

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 ...