Calc Gear Reducer torque

Calc Gear Reducer torque
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Posted by: Thor Lane ^®

12/28/2006, 11:25:43

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Hello.
I am trying to calc the output torque of a gear reducer consisting of a bunch of spur, pinion gears in the gear train. Assuming 100% gear efficiency, is the output torque simply a ratio: Torque(in) x RPM(in)/RPM(out)= Torque(out)?
I know Torque(in)= 34.29 g-cm @ 4,000 rpm
I know RMP (out)= .71 rpm
Is there a typical efficiency for a well design gear train I can use or are there just too many variables? Strictly for a coarse estimate of output torque.

Thanks,
Thor

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Re: Calc Gear Reducer torque

Re: Calc Gear Reducer torque -- Thor Lane Post Reply Top of thread Forum

Posted by: randykimball ^®
Barney
12/28/2006, 20:49:16

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Is it just me, or assuming 100% effeciency, have you answered the calc problem?
in/out x torque
4000/.71 = 5633.8028 x torque.....
I tend to use 75% efficiency as a "safety factor" coverage.

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Re: Calc Gear Reducer torque
Re: Calc Gear Reducer torque -- Thor Lane	Post Reply	Top of thread	Forum