20 Most Recent Craftsman 10" Table Saw - Page 6 Questions & Answers

Not sure which saw you have, but you should first see where the noise is coming from. If this is a belt driven saw, then slip the belt off of the motor (you can leave it on the saw arbor) so that the motor can turn alone. Run the motor and you will quickly find if it's the motor or the saw awbor (that's the shaft that the blade mounts to). The motor might have oil caps. Post again your results if you still need help. Good luck.

Is this direct drive or belt driven? If belt driven check belt and pulleysfor wear. If direct drive don't know of any rubber components.

The motor is receiving power, and that is the humming noise.
The humming sound also says the motor is overheating and will burn out.

Turn saw off.
Use hand and manually rotate blade to see if it rolls free.

For example on my saw, the blade barely turned because a bearing was rusted.
I soaked the bearing in wd-40 and 3-in-one oil and salvaged it.
Look for oil ports on each end of motor, and on bearings.
Clean pulleys and belt that connect blade to motor.

If your blade rolls free, and the motor shaft moves freely, then the motor winding has gone bad, so replace motor.

Add a comment for more free help.
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Is the motor the original? Maybe you bought this used and the original motor was replaced with a Universal AC motor. This type of motor has a tendency to "runaway". It might be workable if you want to baby-sit it very attentively, but it's not really what you want on a table saw, as you might wind up spinning the blade at an unsafe speed. Blades are max rpm rated for a reason.

It will probably work fine. I have done this for a small table saw with nothing special about the light switch. But if you have a 1 hp or larger motor use a high current rated switch, perhaps you can find a 20Amp switch. The make and break arc of a motor is different from lights due to the inductance, so it might fail prematurely, and of course you give up the safety of having the keyed switch.

If it was the bearings you would probably hear a change in the sound of the saw before a significant amount of drag would cause this problem. If you are using the same outlet and the same cords as when you did not have this problem, then something has deteriorated. Is the blade sharp? Has the cord become compromised - either the wire itself or the plug? (The stranded wire in the cord could be hanging on by a few remaining strands.) Does the plug fit nice and tight in the outlet? Perhaps the motor has overheated and has partially shorted out some of the windings. On the other hand, if you have changed extension cords, perhaps the cord is too light or long.

Check if the blade is buckle.