miller.rowan•1mo agoMost Upvoted

Wasted $60 on that "magic" carbon brush kit for rotary drills

Picked up a fancy carbon brush set off some online ad last spring. Claimed it would make my old rotary drill work like new for years. Installed it on a job in Denver and the brush fell apart after 3 uses. Left black dust all inside the motor housing and I had to trash the whole drill. Anyone else get burned by one of those overpriced brush kits?

3 comments

3 Comments

mason_lopez1mo ago

Installed mine on a Hitachi hammer drill and the brushes turned to dust by the second use. Same black grit everywhere. Total scam.

wood.eric1mo ago

Did your friend get a refund? My buddy Tom put these in his Milwaukee rotary hammer and the very first time he used it on a concrete slab the brushes started smoking. He pulled them out and they were already half gone with black powder caked all over the commutator. Took the whole thing to a repair shop and the guy said the cheap carbon compound they use just melts and grinds away under any real load.

spencer_park261mo ago

Man, that's rough. Sounds like those kits are just selling cheap dust in a fancy package. Sorry you had to junk the whole drill because of it.