We were most interested in the six custom-made linear actuators, though. Aluminum extrusions form the frame holding BLDC motor, and guide the nut of a long ball screw. There are a bunch of 3D ...

freeing the lead screw and motor from the drive chassis and placing them in a 3D-printed enclosure for a complete linear actuator that can be used in other projects. (Video, embedded below.) ...

A typical linear actuator couples a motor with a mechanism such as a belt and pulley, rack and pinion, or ball screw. Designs vary to offer long travel lengths, high speed, high positioning ...