Router brush

Router brush

Postby dvaskie127 » Thu Jan 04, 2018 2:37 am

My router stopped working today and was wondering if a broken brush would be the culprit. If not should I be looking for a replacement.
router brush.gif
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Location: Taylor, PA
Model of CNC Machine: Shark HD4

Re: Router brush

Postby kp91 » Thu Jan 04, 2018 4:29 am

A broken brush is definitely the first place to start troubleshooting.

Replace both brushes and see how it runs afterwards
1 John 1:9
Fredericksburg, VA
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Re: Router brush

Postby CT63 » Thu Jan 04, 2018 2:39 pm

Take a flashlight and look in the brush holder opening. Slowly rotate the motor rotor and make sure none of the insulators (between each commutator bars) are sticking up. The rotor commutator should be smooth. Carbon brushes normally don't break like yours unless being struck by a bad rotor bar or insulator. The commutator should be a light to medium brown color. Any blackened or burned bars are from "pin arcing" that usually indicates a shorted rotor winding.
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