The locking element used for disc to shaft attachment provides a de-mountable shrink fit ideal for maintenance purposes. Due to accurate control of the fit, coupled with the absence of any notch effect, the resulting stress concentration produced by the locking element is very low. We offer all styles of compression-style hubs and bushings.

· Excellent for high speed.
· Excellent for reversing applications.

To avoid stress raisers at the hub connections, each end disc is fabricated from a single plate, such that the thickness of the disc is at least equal to the width of the locking element.

The pulley shell and shaft assembly is designed as an integral unit, where the stresses imposed in each component as a result of the belt tension, angle of wrap, pulley rotation and overall pulley dimensions (diameter, face length and bearing centres) are all assessed. The permissible stress levels are restricted within the pulley, in order to provide a satisfactory fatigue life.

Taper friction lock assemblies allow compression shaft locking, using a system of screws and tapered sleeves, eliminating play and eccentricity ensuring the power transmission at the end disc/hub of the pulley. Pulleys using this method of shaft locking are the most utilized today for their strength, simplicity of construction, assembly and maintenance.

Other locking assemblies are available on request.