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Fairloc® the Integral Rotating Component Fastener.



Description
The Fairloc® Hub is designed to solve phasing, timing, positioning and frequent removal problems which conventional fastening methods, such as clamps, keyways, pins or set screws, cannot properly handle. The patented system offers several advantages including: built-in overload protection, full use of the bore, easy adjustment, compact self-contained design. With the very economical Fairloc® system, the shaft remains smooth. Being self-contained, there is no additional inventory to stock. The component can be easily adjusted and is fully supported.

Here is how it works: 
Two slots are machined into the hub, one oriented radially, the other angularly, to create a transverse wedge which remains attached to the solid portion of the hub on one side. The resultant cantilevered clamping section has a tapped hole to accept a cap screw which passes through a clearance hole in the solid portion of the hub, and into a threaded hole in the transverse wedge section. As the screw is tightened, the cantilevered section clamps the shaft securely. The screw can be tightened and released repeatedly without marring the shaft or affecting its torque transmitting abilities. 
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