RPM Calculator Between Two Pulleys
This calculator helps you calculate the RPM of any machine between two pulleys with the RPM of the motor. Both the drive and driven pulleys will be sized in mm or inches. This tool is useful when you are designing the speed of a machine and need to adjust the speed (RPM) by changing the pulley size.
Drive Pulley Size: |
( mm / in) |
Driven Pulley Size: |
( mm / in) |
Motor RPM: |
|
Machine RPM: |
How RPM is Calculated
You can calculate the RPM of the driven pulley using the following formula:
Driven Pulley RPM = (Motor RPM × Drive Pulley Diameter) ÷ Driven Pulley Diameter
By adjusting the size of the pulleys, you can increase or decrease the speed of the driven pulley based on the motor's RPM. However, for more industrial calculations, you can visit our home page.
FAQs
RPM stands for Revolutions Per Minute, which measures how many complete turns an object makes in one
minute.
The larger the drive pulley relative to the driven pulley, the higher the driven pulley's RPM. Conversely,
a larger driven pulley will reduce RPM.
Yes, this calculator can be used for various types of pulleys as long as the diameters and motor RPM are
correctly inputted.
To increase the RPM of your driven pulley, you can either increase the motor RPM or decrease the diameter
of the driven pulley.
The drive pulley is connected to the motor and transmits power, while the driven pulley receives the power
and rotates in response, typically at a different RPM.
Yes, RPM can be measured manually using a tachometer or by counting the number of rotations within a set
time frame and calculating the RPM based on that count.
Knowing the RPM is crucial for ensuring that machinery operates within safe and efficient speed limits,
preventing wear and tear, and optimizing performance.
Yes, while the calculator is designed for inches and millimeters, you can adapt it for other measurement
systems by adjusting the conversion factors accordingly.
Yes, this calculator can be used for any pulley system, as long as you input the correct measurements for
the pulleys.
