How do Crane Motors Work?
I'm not 100% familiar with this but this should be pretty close to the answer. Simple/standard crane motors work by applying power first through a rotating steel shaft into a gearbox. The gearbox allows the gearing ratio to be changed (to trade rotation speed for torque or torque for rotation speed). Another steel shaft carries the power out of the gearbox, again through rotation, to a spindle (think big thimble) around which steel cable is wrapped.
