Belt Length & Pulley Size Calculator
This belt length calculator helps you to calculate the belt length as well as driven pulley size of any machine by following values. You will need to enter the motor RPM, drive pulley size, center distance between pulleys, and the required RPM.
Results
Drive Pulley Size
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Belt Length
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Driven Pulley Size
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Motor RPM
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Driven Pulley RPM
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How RPM and Belt Length are Calculated
To calculate RPM of a driven pulley use the following formula:
Driven Pulley RPM = (Motor RPM × Drive Pulley Diameter) ÷ Required Driven Pulley RPM
Belt length formula:
Belt Length = (π × (Drive Pulley Diameter + Driven Pulley Diameter) / 2) + (2 × Center Distance)
By adjusting the size of the pulleys, you can increase or decrease the speed of the driven pulley based on the motor's RPM.
FAQs
RPM stands for Revolutions Per Minute, which measures how many complete turns an object
makes in one minute.
The driven pulley is the pulley that is turned by the belt, driven by the drive pulley, and which transfers motion to the connected machinery.
- Drive Pulley: Connected to a motor power source.
- Belt: Connects the drive pulley and the driven pulley.
- Driven Pulley: It is connected to the machine that is being powered. It rotates as the belt moves, thereby transferring motion.
Belt length can be calculated using the formula: Belt Length = (π × (Drive Pulley
Diameter + Driven Pulley Diameter) / 2) + (2 × Center Distance).
Center distance refers to the distance between the centers of the drive and driven pulleys,
which affects the belt length and tension.
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