Ameridrives Amerigear couplings are used on many types of cranes and hoists including overhead traveling bridges, gantries, jibs, and top slewing cranes, chain and wire rope hoists and monorail lift systems. The torsionally stiff couplings connect motors and gearboxes on hoist drives, bridge drives, and long travel drives. Americardan® C Series wing bearing style universal joints are used on overhead bridge cranes.