Gear Box Torque Question

[hanksmith]

Just wondering if the torque output on a belt drive is directly proportional to the ratio of the belt drive?

I have a motor with a rated speed of 1185 RPM and a pump with a rated speed of 372 RPM.

The rated torque of the motor is 1187Nm.

Would the torque applied to the pump be equal to:

pulley ratio = 1185/372 = 3.2
torque = 3.2 * 1187 = 3798Nm

Thanks

 

[BobM3]

Yes, (less friction losses).

 

[BigInch]

Usually minimum of 5% or so.

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"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

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