Dewalt motor brush lifespan

My dewalt suddenly stopped working today after about 3 months of use and probably around 100 hours of running. I checked the brushes and they are shot. Only about 1/4 inch left on them. Is this the typical life span?

I normally run pine and 4,000 mm per minute at a 4 speed on the dial.

Can’t say from personal experience, but I’ve heard a few people say around 100 hours.

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Most say do not run it higher than 1 on the dial and 100 hours isn’t uncommon. However if you slow it down they will last longer for sure.

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Ok great. At least they at least they are easy and cheap to replace

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