I am trying to find a motor to use to spin a cardboard wheel to drop balls through a hole. I want this to happen pretty slowly, around 10rpm. It also needs almost no torque, as it is spinning cardboard. However, when trying to find a motor, all I can find is extremely fast motors with low torque or slow motors with high torque. Both options are expensive. Does a very low cost, DC, low speed, low torque motor even exist? Thanks
closed as off-topic by Trevor_G, Andy aka, PeterJ, Dmitry Grigoryev, Brian Carlton Sep 4 '17 at 4:34
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions seeking recommendations for specific products or places to purchase them are off-topic as they are rarely useful to others and quickly obsolete. Instead, describe your situation and the specific problem you're trying to solve." – Trevor_G, Andy aka, PeterJ, Dmitry Grigoryev, Brian Carlton
simple amazon search 10 seconds $4
If you drive the wheel with a belt driven by a 2mm toy motor shaft turning at 5000 RPM you would need the pulley to be 100mm in diameter.
That sounds feasible. If you need the pulley to be bigger, put a small pulley on the motor. Easy to make if you have a small lathe, should be easy to make by sandwiching bits etc. if you don't.
If you're not in too much of a hurry you can get DC gear motors for << $10 from China like the below 12VDC 10RPM model with a convenient 6mm shaft.
This, like most gear motors, will have relatively high stall torque- it is 5.6 kg-cm rated.. if you need it to stall without damage you may need to limit the current.