Table saw

[chatter chatter cut cut]

while building a machinests tool box my dewalt table saw quit .it was making lots of sparks and would start to run and then quit. i removed it from the cabinet and took out the motor .the commutator was blackened and had some wear. put it in the lathe and cleaned up everything . reassembled the motor and it runs fine . im still not sure what the problem was.

 

[NC Rick]

The more load your universal type motor sees the hotter the contact points get. You may have gotten additional foreign material in there. Cleaning between the segments is important. I think we called that “undercutting“ the commutator. I am not a huge fan of that type of motor in a high duty cycle tool like a table saw. They are compact. And noisy.

 

[chatter chatter cut cut]

I agree with you on the motor and was aware when i bought the saw. however it is super accurate and the rack and pinion rip fence is very good and the ability to cut to the center of 4 ft wide stock is great. I have some experience with brush motors both ac and dc .

 

[MikeInOr]

If it gets the job done there is no reason not to use it.

I assume checking the brushes to make sure they aren't worn out goes without saying?

I picked up a really nice Bosch rotary hammer for $20 once. All it needed was $5 worth of new brushes.