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electrical motor RPM

SWDADA

New member
I am designing an electrically powered drill; the reciprocating shaft, which connects the shank and drill bit, is driven by a CAM which connects to a motor through gears. How do i determine motor specifications from gear, cam and shaft weight, speeds and frictional resistances on bearings, bushings etc?
also, is rpm and torque the relevant motor properties?
 

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