`D = 2* "bS" / "rpm" `

Enter a value for all fields

The Pulley Diameter calculator computes the diameter of a pulley based on the speed at which a linear length of belt travels around the pulley  and the rotation rate (R).Belt

INSTRUCTIONS: Choose units and enter the following:

• (bS) Linear belt speed.
• (rpm) Rotation Rate of the pulley

Pulley Diameter (D): The calculator computes the pulley diameter in feet.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math

The formula for the speed of the belt  is: 

             D = 2• BS/RPM 

where:

• BS is the Belt Speed
• D is the diameter of the pulley
• RPM is the rotation rate (rpms) of the pulley

Simple Machine Calculators

• Lever Beam Length 
• Leverage Lift Weight 
• Fulcrum Position 
• Belt Length 
• Belt Speed.
• Pulley RPMs 
• 2nd Pulley RPMs
• 2nd Pulley Diameter 
• RPM of 4th pulley on three shafts 
• 2nd Gear RPM 
• To compute the sum of two lengths

References

• Handyman In~Your~Pocket page 42 :(Young and Glover)2012 published by Sequoia Publishing Inc of Littleton, Colorado, U.S.A.