Shrink Discs –
MAV External Locking Devices
MAV shrink discs are installed externally on a hollow shaft or hub to connect it to a shaft, for example— in a hollow-shaft gearbox. When the shrink disc’s locking screws are tightened, the thrust rings are drawn together and compress the inner ring. This creates an interference fit by applying pressure to the outside of the hub, thus clamping it onto the shaft. Shrink discs are the preferred alternative to conventional shrink, shrink/fit/press fit, tapered bushings or keyways.
Because the force applied to the hub is always within the elastic limit of the material, the hub springs back when the force is released, making MAV external locking devices easy to remove.