GREYSUN ENGINEERING TOOL
Pulley Speed Calculator
Calculate approximate driven equipment speed using motor RPM, driver pulley diameter, and driven pulley diameter.
RPM
Approximate Driven Speed
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RPM
Enter motor RPM and both pulley diameters, then select Calculate Pulley Speed.
Formula Used
Driven RPM = Motor RPM × (Driver Pulley Diameter ÷ Driven Pulley Diameter)
How Pulley Size Affects Speed
A larger driver pulley increases driven speed. A larger driven pulley decreases driven speed.
Important Note
This result is theoretical. Actual speed may vary because of belt slip, pitch diameter, motor load, and equipment conditions.
Need Help With Your Centrifuge Drive?
Greysun can help evaluate pulley sizing, operating speed, drive configuration, repairs, and centrifuge performance.