Whilst [Frank] mentions that this assembly has a weight and torque advantage over a NEMA 17 sized stepper motor, but we see no hard data on accuracy and repeatability which would be important for ...

Nanotec has created low-noise planetary gearboxes for brushless DC and stepper motors with NEMA 17 flanges (42mm, 1.7in). “With the GP42-N series,” according to the company, “the helical toothing ...

Servo motor diameters typically range from NEMA 17 all the way up to 220 mm. As a result of these combined factors, servo motors deliver torques of up to 250 ft-lb.

A stepper motor’s shaft normally makes discrete angular movements of essentially uniform magnitude when driven by a DC power supply. ... These NEMA size 17 step motors have different stack lengths.

[ZeroBacklash] created a little strain wave gearbox (harmonic drive) for when you want to trade speed for torque on NEMA 17 stepper motors.

The NEMA compatible ZSH-series is available in frame diameters of 57, 87 and 107 mm with holding torques from 0.45 to 17 Nm. The 2-phase 200 step/rev hybrid stepper motor design has smooth ...