All Replies on Table Saw Pulley Ratios?

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View DirtyMike's profile

Table Saw Pulley Ratios?

by DirtyMike
posted 09-10-2016 12:38 AM

4 replies so far

View MrUnix's profile


8212 posts in 3049 days

#1 posted 09-10-2016 12:55 AM

If your existing motor is 1750 rpm and the pulley diameters you give are correct, then the arbor is only spinning at around 2300 rpm, which is really slow. Most 10” table saws run the blade around 4000-5000 rpm. If you put in a 3450 rpm motor and use the same pulley arrangement, it would get you around 4700 rpm. If you want to maintain the speed you currently have at the arbor, you would either need to reduce the motor pulley to half it’s current size (1.375”, which isn’t really feasible) or double the size of the arbor pulley.

Arbor speed calculator can be found here.


-- Brad in FL - In Dog I trust... everything else is questionable

View DirtyMike's profile


637 posts in 1752 days

#2 posted 09-10-2016 12:57 AM

Am i correct that a 3600 rpm motor with a 1:1 ratio with spin my blade 3600 rpms? will i notice much torque loss with a 1:1?

View DirtyMike's profile


637 posts in 1752 days

#3 posted 09-10-2016 01:37 AM

Thanks brad. My arbor pulley is 2.25 inches and the motor pulley is 2.75 inches. Low blade rpm explains a lot of the trouble I have been experiencing.

View Woodknack's profile


13473 posts in 3230 days

#4 posted 09-10-2016 03:26 AM

Be careful of online pulley calculators. I tested a bunch a few years ago and some of them are inaccurate which is weird because the math is very simple.

-- Rick M,

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