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Pulley to Pulley RPM Calculator Online

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The Pulley to Pulley RPM Calculator serves as a practical tool used in engineering and mechanical fields to determine the rotational speed of pulleys interconnected by a belt or a chain. This calculator aids in understanding the relationship between the diameters and speeds of two pulleys, offering a quick means to assess RPM (Revolutions Per Minute) changes when the diameters of the pulleys are altered.

Formula of Pulley to Pulley RPM Calculator

The RPM calculation between two pulleys is represented by the following formula:

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RPM1 = (D2 / D1) * RPM2


  • RPM1 signifies the RPM of the first pulley.
  • RPM2 represents the RPM of the second pulley.
  • D1 refers to the diameter of the first pulley.
  • D2 indicates the diameter of the second pulley.

General Terms People Search

Here’s a table of frequently searched terms related to pulleys and RPM calculation:

Search TermDescription
Pulley RPM FormulaExplains the formula for calculating pulley RPM
Pulley Diameter RelationRelationship between pulley diameters and RPM
Belt/Chain RPM CalculatorTools aiding in belt/chain RPM calculation
Pulley Speed CalculatorDevices to determine pulley rotational speeds

Example of Pulley to Pulley RPM Calculator

Let’s consider a scenario:

  • The first pulley has a diameter of 10 cm.
  • The second pulley has a diameter of 20 cm.
  • The second pulley rotates at 120 RPM (Revolutions Per Minute).
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Using the RPM formula, let’s calculate the RPM of the first pulley:

RPM1 = (20 / 10) * 120 RPM1 = 2 * 120 RPM1 = 240 RPM

Therefore, the RPM of the first pulley in this scenario is 240 RPM.

Most Common FAQs

1. What is the significance of calculating pulley RPM?

The calculation of pulley RPM aids in determining the operational speed of interconnected pulleys, crucial for various mechanical applications such as conveyor systems, engine mechanisms, and power transmission systems.

3. Can this calculator be used for belt-driven systems as well?

Yes, the RPM calculator can be employed for both belt-driven and chain-driven systems as long as the pulleys are connected and contribute to the rotational movement.

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