Brushes for DC machines are sometimes formulated for polarity because electron flow affects wear. If the polarity is constant, a specially formulated brush will last longer and gove less wear on the communtator.

B. Gentry

On 7/6/25 4:15 AM, Hubert Miller wrote:

Now that is interesting ! I understand difference in HV and LV brushes, but i have NEVER seen LV brushes marked for polarity. I wonder if this was somehow only an accounting matter ?

-Hue Miller

Sent from my Galaxy
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