as in the sketches alongside of a roller-ramp system original types of freewheels ... of an extensive range of sprag roller ramp and contact-free element clutches ... selection of options for unidirectional drive freewheels are used for three basic ... is to prevent reverse rotation of the drive shafts which otherwise would cause ... in reverse these are typically used on conveyors elevators cranes and pumps in this mode ... the input is stopped should the input drive be reversed there will be no drive to ... this is typically used in starter drives for engines or turbines to provide ... automatic decoupling of starter motor drive when operational speed is reached on bi ... -motor drives and also to overcome the problems of ... backdrive when high inertia high speed drives are shut down in this mode ...
driving member positively rotates the driven member in one power transmission ... of rotation is reversed or if the driven member rotates faster than the driver ... disengages automatically when the driven member rotates faster than the driving ... member used in:g dual drives prevents disconnected engine/motor from ... being driven g conveyor belts goods may be moved faster on the ... belt than the corresponding drive speed g crawler drives the slow running ... of large centrifugal mass from the drive the centrifugal mass can run on freely ... when the drive is stopped backstops where the ... is disconnected used in:g inclined conveyors and elevators g pumps and compressors g ... gear drives indexing where the freewheel converts ... motion into intermittent unidirectional drive used for feeding of components in:g ...