BDC motor has 8 brushes -- Why?

Thread starter Ed Walti
Start date Feb 15, 2016
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Motor

AI Thread Summary

The discussion centers on a large 36V, 65 amp DC motor equipped with eight brushes, prompting inquiries about the reasons for this configuration. The arrangement of the brushes is questioned, with a suggestion of four sets of two. The size of the brushes is also a point of interest. The motor's design allows for a distribution of current, providing approximately 8 amps per brush. Understanding the brush configuration is essential for optimizing motor performance and efficiency.

Feb 15, 2016

Ed Walti

I've got this large dc 36v 65 amp motor and is has 8 brushes. Can someone please educate me why it would have this many?

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Feb 16, 2016

Wee-Lamm

https://www.physicsforums.com/threads/2-pole-4-pole-8-pole-motors.509564/

Feb 16, 2016

jim hardy

Science Advisor

Homework Helper

Dearly Missed

Gives 8 amps per brush.

How're they arranged ? four sets of two like below ?
How big are they ?
https://commons.wikimedia.org/wiki/File:Commutator-of-DC-traction-motor-01.jpg

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