Transmissão por Polias
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
polias
About this calculator
The transmission by pulleys calculator is a useful tool for mechanical engineers and students. It calculates the transmission ratio between two pulleys with diameters D₁ and D₂, and velocities n₁ and n₂.
The formula behind the calculator is simple, but effective. It uses the relation n₂ = n₁·D₁/D₂, where n₂ is the velocity of pulley 2, n₁ is the velocity of pulley 1, D₁ is the diameter of pulley 1 and D₂ is the diameter of pulley 2.
This calculator is especially useful when you need to design energy transmission systems, such as in motion machines and material handling equipment. Additionally, it is also useful for solving practical problems in the laboratory or in the field.
Frequently asked questions
What is the transmission by pulleys?
The transmission by pulleys is the transmission of energy from one pulley to another, utilizing the relationship of velocities and diameters of the pulleys.
When to use the transmission by pulleys calculator?
Use the transmission by pulleys calculator when you need to design energy transmission systems, such as in motion machines and material handling equipment.
What is the transmission ratio?
The transmission ratio is the relationship between the velocity of the output pulley and the velocity of the input pulley.
How to calculate the velocity of the output pulley?
The velocity of the output pulley can be calculated using the formula n₂ = n₁·D₁/D₂, where n₂ is the velocity of the output pulley, n₁ is the velocity of the input pulley, D₁ is the diameter of the input pulley and D₂ is the diameter of the output pulley.