Motor Driving Hollow Cylinder Rotating Torque Equation and Calculator
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These equations will determine the torque requirements for a electric motor operating with a hollow shaft driven by the motor.
To determine a fan or blowers horsepower when driving a hollow cylinder/shaft use the following equation.
Hollow Cylinder
Equation:
and
Where:
T = | Required Torque, lb-ft |
WK2 = | Mass Moment of Inertia of load to be accelerated lb-ft2 (See Mass moment of inertia calculations) |
= | Change of speed, rpm |
t = | Time to accelerate the load, seconds |
W = | Weight of object, lb |
R1 = | Outside Radius of cylinder, ft |
R2 = | Inside Radius of cylinder, ft |