Table Saw Motor RPM

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Forum topic by smsaero posted 03-09-2010 12:01 AM 4822 views 0 times favorited 4 replies Add to Favorites Watch
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2 posts in 2994 days

03-09-2010 12:01 AM

Topic tags/keywords: table saw rpm motor size pulley size rebuild

I am in the process of rebuilding an old Atlas Table Saw. I am trying to utlilize a 2hp motor I already have but am conerned with the rpm of the unit. The motor is a 3450rpm 2hp with a 7/8 shaft. The smallest machined pulley i can find is 3.5”. This size pulley on my arbor would certainly limit my blade height. If i go to a smaller pulley on my arbor, my rpm will shoot up to over 5300 on a 2.25” pulley. Will this be bad? Is there a max i would want to see? What are the limits on most saw blades. Will i tend to burn the wood at higher RPM’s. Any insight would help.

4 replies so far

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5423 posts in 3656 days

#1 posted 03-09-2010 12:26 AM

5300 rpm might be a bit fast … my Jet runs at 3600 rpm. I would think the faster speed might make you more susceptible to burning.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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768 posts in 3666 days

#2 posted 03-09-2010 12:50 AM

You don’t need a machined pulley. Find a cast iron pulley. They’re typically epoxy coated and balanced has a wide selection a 2.45” pulley with a 7/8” bore is 4 bucks.

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Eduardo Rodriguez

37 posts in 3364 days

#3 posted 03-11-2010 06:55 PM

3450 rpm. If you increase the speed maybe loose torque. You just need the same size pulley in the arbor shaft as in the motor. My old Craftsman runs on 3450 rpm.

-- Tempus fugit...better work wood!!!

View smsaero's profile


2 posts in 2994 days

#4 posted 03-22-2010 05:52 PM

Thanks guys. Found the pulleys at surpluscenter and shes all put back together. Runs nice and smooth!

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