spur gears, rolling element bearings, shafts, keys or press fits, seals and housing.... Figure 1 : Top Running Overhead CraneMachine Designspur gears, rolling element bearings, shafts, keys or press fits, seals and housing.... Figure 1 : Top Running Overhead CraneMachine Designspur gears, rolling element bearings, shafts, keys or press fits, seals and housing.... Figure 1 : Top Running Overhead CraneMachine Designspur gears, rolling element bearings, shafts, keys or press fits, seals and housing.... Figure 1 : Top Running Overhead CraneMachine Design