Series CZ/CN Zero Backlash Safegard Overload Clutches

Zero backlash Overload Clutches and Couplings, series CZ available in 8 different basic types and 12 basic sizes, for shaft diameters from 8mm to 60mm; providing overload protection for torque values from 5Nm to 740Nm. The CZ series Safegard overload clutches were developed to provide a totally backlash free transmission of power with a very responsive overload protection. These compact units are directly interchangeable with existing designs in the market providing a cost advantage with long reliable service life. Two basic modes of operation are available: 1. The basic CZF Safeguard ratchetting design with the driving balls equally spaced so that the clutch can re-engage after a small angle of rotation 2. The Synchron CZY design with the balls unequally spaced so that the clutch can only re-engage after a full revolution so providing full synchronisation between driver and driven Responsive overload reaction is obtained by the use of negative functioning disc springs to apply drive load. In the event of an overload the spring load actually decreases, allowing faster disengaging of the drive and minimal pressure on the driving surface in the disengaged mode.

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