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Use this equation and calculator to determine the torque and force to drive gears, belt, or chain mechanical systems. 

Equation:  

        and          Calculator

Where:

T =	Required Torque, lb-ft
=	Reflected inertia, lb-ft2
=	Load inertia, lb-ft2
=	Reduction ratio
=	Change of speed, rpm
t =	Time to accelerate the load, seconds
=	Change speed of shaft, rpm

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