Foettinger-type hydrodynamic coupling with freewheel - has inside of passage from freewheel to working chamber at smaller radius than inner freewheel race

摘要

The coupling has two coaxial runners which can turn in relation to each other, the freewheel comprising clamping rollers at the hub area. The rollers work between races spaced apart in the radial direction. The chamber between the races is connected to the coupling working chamber. The radial inner edge of the connecting passage is at a smaller radius than the inner face (5) of the freewheel. ADVANTAGE - The inner race is kept constantly oil-immersed, with consequent longer life.