It is possible the com segments have the old style Mica separator, the new style motors have a self wearing material that does not need to be undercut like the Mica variety.
Al.
The Glentek DC servo on my X axis squeaks when it rotates under power or by hand.
I removed the brushes and rotated and it's whisper quiet. Brushes look fairly new.
I blew all the carbon out and rotated the armature while blowing out the commutator.
It squeaks as soon as I installed the brushes. None of the other motors make any noise.
Why is this one make noise and the others aren't?
Richard
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Last edited by rwskinner; 12-30-2018 at 01:38 PM.
It is possible the com segments have the old style Mica separator, the new style motors have a self wearing material that does not need to be undercut like the Mica variety.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.