Patents

Self-centering and self-expanding mechanical shaft.

Totally mechanical system where core locking happens by radial expansion of a steel balls set moved thanks to an outer sleeve with a drag function, these balls generate a pressure and then a torque on the inner core surface engaged on the shaft.

The shaft doesn’t need any pneumatical inflating device and maintenance operations are no more required.

Self-expanding and self-centering fully mechanical adaptors suitable to be mounted on a smooth or expanding carrier shaft, allow to block larger diameter cores.

Unlimited transmitted torque and no more inflating devices are the main benefits.

Based on the same principle of operation of the new CLEV12 mechanical shaft, core locking happens by radial expansion of a steel balls set moved thanks to an outer sleeve with a drag function, these balls generate a pressure and then a torque on the inner core surface engaged on the shaft.

Inflating system based on independent bladders used to create the radial expansion on pneumatic shafts, reduced downtime in case of faulty air tube because only one key row is down while the others are still expanded against the core and reduced pumping effect common to competitor’s shafts with one or more dependent air tubes.

Friction rings with double row of expanding steel balls able to lock the cores and allow the required frictioning on the carrier shaft equipped with a pneumatic inflating system.

Special Twist execution makes sure the direct and continuously contact between core and balls.