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Industrial
Electric Motor Supply To determine a fan or blowers horsepower
when driving a hollow cylinder/shaft use the following
equation.
Hollow Cylinder
Equation:
 and
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Calculator
Where:
| T = |
Required Torque, lb-ft |
| WK2 = |
Inertia of load to be accelerated lb-ft2
(See 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 |
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