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Gearbox Reducer Power Requirement Calculation

Given Information:

  • Load side torque requirement:
  • Load side speed requirement:

Calculate Power

Power can be calculated using the formula:


Where:

  • P is power
  • T is torque
  • ω is angular velocity

Note:
With unit conversion automated, you can switch units of all quantities used here on the fly.

Moreover, have you noticed that the equation expressions used here are all the basic formula! As simple as that!

Result

The gearbox reducer's power requirement is approximately

Note

This calculation assumes 100% efficiency. In practice, you should factor in the gearbox efficiency, which is typically around 95-98% for a single reduction gearbox. To account for this, divide the calculated power by the efficiency:

Let's assume efficiency of , we will get:

This gives a more realistic power requirement for the input side of the gearbox.

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