Mav Shrink Disk

They work form the outside as they fix the hub (hollow shaft) shrinking it with the external part of the shaft.

Shrink discs provide locking between a standard shaft and a hollow shaft a main applications being in the field of gear boxes, speed reducers, etc. These friction elements exploit the pressure in the hollow shaft interface generated by the forces of the conical cones, assembled through the bolts. Permit simple axial and angular hub movement offer extremely concentric and well balanced connections, ideal for high speed applications. Presented in 3 options a heavy, medium and light, depending upon torque transmissions. Also available in split version, shrink discs provide excellent torque transmission and high resistance to bending.