DC motor keeps wearing out

Other Hardware Robotics
5

Have you dissected one to see what "wore" out?

  • Brushes (not likely) wear is proportional to current.

  • Overheating, perhaps shorted inner windings, probably the most likely.

  • Mechanical, not likely from your description but could be bound up.

I would guess @Railroader hit the nail on the head. If the motor overheated it is possible (likely?) one or more of the inner windings heated enough for the wire insulation to break down. This would lead to a small number of shorted turns at that point.

Is the motor completely closed? If open can you add a small computer fan to cool it?

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