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Live tool/tool/pulley-ratio-calculator

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Pulley Ratio Calculator

Estimate output RPM, speed ratio, torque multiplier, and belt speed from pulley diameters.

EngineeringMechanicsMakers

Driver pulley

in

Driven pulley

in

Motor speed

RPM

Estimated efficiency

%

Output speed

647 RPM

Speed ratio

0.375:1

Torque multiplier

2.53x

Belt speed

1,355 ft/min

System efficiency

95%