Hi
Using a 28byj-48 12 volt uni but max revs is less than 20 and torque quite low. What is another stepper motor equivalent that ccan give a better result say 50rpm any voltage, and more torque. Size is an issue but no larger than 20 mm in depth from front panel with shaft to back panel. Any shaft length.Thanks
Charles

 

State what torque you in need of?
The stepper you quote is geared down, =64/1 that is why it is slow.
The motor itself is even lower torque than the final output of this version.