The Right Drive Concept: The Cat CST 65

The Cat® drive is a planetary gearbox with an integrated infinitely variable multi-disc CST clutch. The drive features no-load motor startup, AFC soft start and synchronized heavy-load startup, it allows accurate load sharing between up to three drive motors with excellent, extremely fast overload protection.

A CST gearbox comes in three parts: a supply unit, a first planetary gear stage and an output unit comprising a second planetary gear stage. The KP gearbox also comes in three parts. The supply unit and output unit are the same as the ones from the P gearbox, but the first planetary gear stage is replaced by a bevel helical gearbox unit. The KP gearbox design is available in a left-handed and in a right-handed version. It is also possible to mount the electro-hydraulic controller either inside or outside the supply unit.

The roller bearings of the bevel gear shaft are lubricated by forced lubrication via the built-in oil pump (usually responsible for cooling oil supply to the CST clutch). All other gearings and roller bearings are lubricated by means of splash lubrication.