Drag or increased pressure on the tool will also reduce the duty cycle as the tool has to work harder it gets hotter faster. Light pressure like the shaping of the arch in the metal in the picture above will increase the duty cycle in your favor as the tool is not working as hard.
Recently my home polisher sander started giving me trouble on this project. I stopped immediately! The rear bearing failed. Had I of continued to push the tool it would have chewed up the worm gear cost of repair $2 +$7 shipping = $9. The cost of a new sander polisher $80 or more, how long have I had this power tool about 34 years. The motor showed no signs of ever being overheated. It has been treated well since I have had it so it should last my lifetime. Yet this sander or any power tool, welder, chop saw, drill press, bench grinder, belt sander, etc. could be ruined in the hands of a careless worker in an afternoon. There are enough projects going on in the shop to keep you busy giving you time to let a power tool cool. You now know more about using electric tools than most people so you should enjoy your investments for years to come. Richard W Norman To view next post click
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