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Hydraulic motor sizing

Hydraulic motor sizing

Hydraulic motor sizing

Hello Everyone:

I am designing a winch that would have a pull force of 20,000 lb. I determined that the torque required for it to move is 80,000 lb.in (I multiplied the force by the radius of the drum basically). I have selected a planetary drive that would give me a reduction of approximately 31:1 and now I am trying to select a hydraulic motor that would give me the required torque. I determined that I need torque of approximately 2500 lb.in but I fail to be able to select a suitable motor. would someone please help me?


RE: Hydraulic motor sizing

What will be your operating pressure?


RE: Hydraulic motor sizing

Torque equals psi times cu.in./rev displacement divided by 2π


RE: Hydraulic motor sizing

2500 PSI. so I need approximately 6 in3/rev. what type of motor do you suggest?

RE: Hydraulic motor sizing

A gear motor. Look at Eaton CharLynn gerotor/gerolor motors.


RE: Hydraulic motor sizing

awesome thanks Ted.

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