how to increase torque with gears


How to Increase Torque With Gears

Gears are essential components used to control the speed and power of a motor or machine. When it comes to increasing torque, there are several options available. In this article, we will explore how to increase torque with gears and the advantages of doing so.

Gear Ratios

The most common way to increase torque is by changing the gear ratio. By increasing the number of teeth on a gear, you effectively increase the leverage needed to turn that gear. This, in turn, increases the torque output of the gear system. To find the gear ratio, simply divide the number of teeth on the driven gear by the number of teeth on the driver gear. For example, if the driver gear has 20 teeth and the driven gear has 40 teeth, then the gear ratio is 2:1.

Using Pulleys or Belts

Another way to increase torque is by using pulleys or belts. Pulleys and belts act as mechanical levers that can be used to increase the torque output of a motor. The longer the pulley or belt, the more torque it can generate. This is because the longer length increases the lever arm, providing greater torque.

Advantages of Increasing Torque

Increasing torque can bring several key advantages to a motor or machine:

  • Increased Power Output: Increasing torque output will result in more power being produced by a motor or machine, allowing it to work at higher speeds and/or heavier loads.
  • Increased Efficiency: Increasing torque output will also improve the efficiency of a motor or machine as less power is lost to friction.
  • Reduced Wear and Tear: By increasing torque output, the motor or machine will experience less wear and tear, extending its lifespan.


Increasing torque with gears is an efficient and cost-effective way to increase the performance of a motor or machine. By using gear ratios, pulleys, and belts, you can increase the efficiency and power output of your motor, allowing it to handle heavier loads and faster speeds.