Gear reducers are an essential technology that multiply the torque from a drive motor to amplify force for heavy loads. This ...

We’ve seen similar drives recently in [Paul Gould]’s 3D Printed Robot Actuator which uses a cycloidal gearbox, as well as the incredibly smooth action of the cycloidal drive-inspired Abacus Drive.

Cycloidal gearboxes for robot's motors According to Techeblog, the robot's motors and body use 3D-printed cycloidal gearboxes, which are very cheap but also very robust.

At its heart is a cycloidal gearbox, in which the three small shafts which drive the center gear are driven by a toothed belt. The motive power comes from a brushless motor, which is what gives ...

This time I've balanced the drive by using two cycloidal discs 180' out of phase with each other. I've also made the cam shaft much thicker and robust by screwing an M4 bolt through the middle of it.