I have a Taig mill and the motor stops sometimes. If I turn of the switch for a short time, it starts again. Last time it gave some stuttering noise before it stops and it was not heavy loaded.
What can be wrong?
I didn´t know there was a thermal switch. The motor was a bit hot after I did some side cuts in aluminum with a 10mm end mill.
Don't you use 220v 50hz power there? Are you using a step-down transformer to knock it down to the 110v that the motor wants? While the Franklin motors that Taig provides with their CNC mills work quite well on US 110v 60hz current, I'm not sure that even if you stepped it down to 110v that it would be happy with 50hz (and if you're running it on 220v, you should definitely expect major problems). There might be a way around the frequency problem (perhaps an electrical engineer will read this and suggest something) but the simplest solution would probably be for you to find a 220v 50hz continuous-duty motor 1/4 hp or better, and use it instead of the Franklin with the power you've got.
I´m using a step down trafo, so the problem may be our frequency at 50 hz. The motor is marked with 60 hz.
I´m not an expert with motors but my first thought would be that this only would make it run a bit slower.
Do you think this is a serious problem or can it be solved by mounting an extra cooling fan to the motor?