Shrink Disc

Shrink discs are external clamping connections for the backlash free fastening of hollow shafts or hubs to shafts. By tightening clamping screws conical surfaces are pulled together generating radial forces ; these forces press the hollow shaft onto the shaft. Torques or axial forces can be transmitted frictionally from the hollow shaft to the shaft. The shrink Disc it self is not involved in the transmission of torque or axial forces. The radial clamping forces which act through the circumference of the hollow shaft also ensure an optimum centring to the shaft.
Shrink disc are used for example to fasten machine shafts to gear boxes with hollow – shafts.

Two Types of shrink disc:

1. Two part shrink disc S2 series

2. Three part shrink disc SD series