This seems to be a pretty basic question, but I have probably been over-thinking it. I am trying to clarify some torque issues with one of our gearboxes. Is there an equation for torque that the manufactures use to rate their gearboxes? I know that Power=Torque*speed or HP=torque*rpm/constant. For couplings, Torque=63000*Pnormal*SF/Nnormal (already has constant included?). I was wandering if this formula is applicable for gearboxes also? I am guessing that the gearbox manufacturers have the same gearbox for a range of power and they only change the S.F. to have an accurate nameplate. We have changed the driver power and I wanted to make a quick check to see what the gearbox is capable of handling. If I used a new gearbox I will probably have to put a new foundation in.
Gearbox ratings 32hp In RPM: 3402 Out RPM: 808 Ratio: 4.211 S.F.: 1.46
Steam Turbine Driver
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