Housing Freewheels FHD for stationary multi-motor drives with roller lift-off and mechanical separating function Application as ➧ Overrunning Clutch for multi-motor drives in which a drive is automatically disengaged when it is no longer supplying power. Features Housing Freewheels FHD with hydrodynamic roller lift-off are typically used in cases where an assembly can be driven from two or more motors or turbines at the same or similar high speed. They allow a continuous plant operation in the event that one of the energy sources or a drive line fails as well as energy saving in the case of partial load operation. For safe system maintenance, the Housing Freewheels FHD are equipped with a mechanical separation function to decouple the input drive from the output drive train. The Housing Freewheels FHD are completely enclosed freewheels for stationary arrangement with input and output shaft. Advantages • Nominal torques up to 24 405 Nm • Shaft diameter up to 109,5 mm • Wear-free operation • Low noise • Low power dissipation • Integrated oil filtration system • Mechanical separating function • Oil change without down time • Complies OSHA “Lockout-Tagout” requirements running clutches at high speeds, not only in freewheeling operation, but also in the driving operation, as can occur, for example, in mul- ti-motor drives. In the case of hydrodynamic roller lift-off, the lifting force is generated by an oil film applied during freewheeling operation by centrifugal force exerted on the outer ring race. This provides for practically wear-free freewheeling operation. The speed differential between the inner and outer rings is the decisive factor affecting the lift-off function. If the speed differential decreases, the lift-off force also decreases. Before achieving synchronous running, the clamping rollers guided in a cage are positioned with the aid of the central spring system against the outer ring race and are then ready to lock. This guarantees immediate torque transfer once the synchronous speed has been reached. Hydrodynamic roller lift-off Housing Freewheels FHD are equipped with hydrodynamic roller lift-off. The hydrodynamic roller lift-off is the ideal solution for overInput shaft Inner ring Cage Spring system Spring system Centrifugal forc

Housing Freewheels FHD for stationary multi-motor drives with roller lift-off and mechanical separating function Areas of application driving operation freewheeling operation Housing Freewheel with separating function freewheeling operation Housing Freewheel with separating function Housing Freewheels as automatic clutches in multi-motor drives fulfil here an important function. They disengage a drive automatically as soon as it no longer provides power to the working machine. The Housing Freewheels do not require any external operating equipment. Typical applications for multi-motor drives are:...

Housing Freewheels FHD for stationary multi-motor drives with roller lift-off and mechanical separating function Hand lever View port Sliding mechanism of the separating function Speed sensor (optional) Spring system Input shaft Output shaft Radial seal Radial seal Input shaft bearing Output shaft bearing Selection torque for Housing Freewheels FHD In many cases where overrunning clutches are being used, dynamic processes occur that cause high peak torques. In the case of overrunning clutches, the torques that occur during start up must be observed. The peak torques when starting up can, in the...

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque. Keyway according to USAS B17.1-1967 The Housing Freewheel must be mounted in such a way that shaft d1 is the input shaft and shaft d2 the output shaft. We recommend the use of torsionally stiff shaft couplings generating only low reactive forces. On indication of the reactive forces that occur we are well prepared to check the usable life of the bearings installed. Prior to ordering, please complete the questionnaire on page 121 by specifying the direction of rotation in...