Reply by EEngineer

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Posted on atlas table saw help

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1117 posts in 3815 days

#1 posted 08-25-2010 06:51 AM

Most of the blades I have are marked something like 7000 max RPM. If I hadn’t found the rated RPM in my Sears manual for the saw, I might still be looking for some indication of what the right speed is. My 10 inch saw, by the way, seems to run 1:1 on the pulleys with a 3450 motor.

Using a bigger pulley to get higher RPM would translate to a loss in torque wouldn’t it?

Hmmm, lemme think about that a minute… from Physics, power = torque X rotational speed. Can’t create power, so with no belt slippage, motor HP = blade HP so , yeah, I gotta assume that as blade speed goes up, torque goes down. However, doesn’t there have to be some minimum speed that the blade runs at to cut effectively? No idea what that would be, just the note from my old Sears manual. You might want to err on the low RPM side.

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