Question on Motor and Gearbor

Help & Support Robot Parts
1

Hi,

i was looking at the following motor from the Robotshop:
[h1]12V 120 RPM DC Motor 64:1[/h1]
The motor is actually advertised at 8100 RPM with no load. It is my understanding that such a motor would spin extremely fast, but have very little torque. By using the 64:1 gearbox the torque is increased at the expense of the RPM.

My question is could I remove the gearbox and use the motor at such a high RPM (8100). What I’m trying to spin would require very little torque anyways: it’s a small fixture made from toothpicks. My target value for RPM is 3600. So by loading the motor with my fixture could I conceivably spin the motor at high RPM without breaking it?

2

robotshop.com/en/12v-120-rpm … r-641.html

Yes, you could remove the gearbox (which is actually the most expensive part of the gear motor) and use only the motor. The output shaft will have a small spur gear, and we cannot guarantee it will be easy to remove. The motor’s shaft will also likely be small. You would also get 1/64th the torque. It seems like you really need a normal DC gear motor with !2:1 or 3:1 gear reduction (not many though).
robotshop.com/en/gear-motors.html?limit=60

3

Thank you!