RENCOL® Shaft Variable Rings

RENCOL® SV style rings have a free-state diameter smaller than the shaft diameter over which they are to be installed, so that when mounted to the shaft, the rings conform to and become self-retaining on the shaft.  The ring sits on the shaft with waves on the outside to be compressed by the bore of the housing.

Engineered Fastening

The Tolerance Ring allows a simple consistent joint of cylindrical parts using dissimilar materials without the complications and cost of adhesive, secondary machining operations or machined details, such as splines or threads.  The Tolerance Ring sits between the two components resulting in an engineered fastening.

	Circlip	Threads	Press Fit	Adhesive	Tolerance Ring
Re-workability
Mating component tolerances
Total solution cost
Dissimilar materials
Alignment

Torque Transfer

In a torque transfer application, the Tolerance Ring sits between the driving shaft and the gear/pulley.  The amount of torque is controlled by the design characteristics of the Tolerance Ring.  The Tolerance Ring is an inexpensive solution which eliminates the need for costly machining operations such as keyways.

	Keyway	Set Screw	Spline	Press Fit	Tolerance Ring
Backlash
Component cost
Ease of re-work
Assembly cost
Temperature range

Torque Overload Protection

In a torque overload application, the Tolerance Ring sits between the driving shaft and the driven gear/pulley.  The application slips at a predetermined torque level controlled by the design characteristics of the Tolerance Ring.  The Tolerance Ring acts as an inexpensive slip clutch protecting expensive mechanisms such as gear boxes and motors from damaging torque overload situations.

	Mechanical Clutch	Sensor / Electronics	Tolerance Ring
Total solution cost
Space saving design
Reaction time
Weight
Number of components

 = suitable

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