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Need DC motor having high holding torque

by harshrajs7313
Tags: holding, motor, torque
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harshrajs7313
#1
Jul18-12, 11:51 AM
P: 1
Hello Mates,

I m making my project on Wireless robotic arm using microcontroller. I need DC Geared Motor with following specifications:

1) low RPM.
2) High Starting torque.
3) High Holding torque.

Can any1 please help me in selecting motor ??
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sophiecentaur
#2
Jul19-12, 09:02 AM
Sci Advisor
Thanks
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P: 12,185
Sounds to me like you need a worm drive on a standard small DC motor. Worm drives 'gear down' dramatically and are not too efficient so the holding torque is very good (due to the friction). A small motor needs to rev high, so a >=10:1 reduction would be quite handy. I should think.
jim hardy
#3
Jul19-12, 12:19 PM
Sci Advisor
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P: 3,682
look for hobbyist sites that's where the creativity is.

here's one of my favorites
http://www.discovercircuits.com/ubbt...s.php?ubb=cfrm

and search on terms like 'robotic supplies'
http://www.hobbyengineering.com/index.html
http://www.mpja.com/DC-Motors/products/100/

mpja is in North Florida.
surely there's somebody similar in your part of the world..


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