Efficiency of Gear Transmission Calculator

Efficiency of gear transmission (η):

Power output delivered by the driven gear (P_output):

Power input supplied to the driving gear (P_input):

How This Is Calculated

$$ \eta = \frac{P_{output}}{P_{input}} \cdot 100 $$ where:

η = Efficiency of gear transmission (%)

P_output = Power output delivered by the driven gear (W)

P_input = Power input supplied to the driving gear (W)

Assumptions

There are no energy losses (the gears are ideal).
The gears are rigid and do not deform under load.
There is no slippage between the geat teeth.
Backlash is negligible.

Related Calculators

Angular Velocity

Gear Ratio

Mechanical advantage

Power Transmitted Between Gears

Torque Relationship