Axle Rotary Shaft Power (\( P \)):

\[ P = \frac{Ft \times N}{1340} \]

Where:

• \( P \) is the shaft power, in kilowatts (KW).
• \( Ft \) is the total axle or rotary shaft load, in kilograms (kg).
• \( N \) is the speed of the axle or rotary shaft, in revolutions per minute (rpm).