Amacoil/Uhing (Aston, PA) has introduced Easylock shaft collars that hold reels, spools, and other objects in place on shafts. Objects are held between two pintles, one of which has a clamping force control. The clamping control permits adjustment of the holding force from 90 to 1,124 pounds. A conical point mounted to each pintle is the mechanism for engaging the object with the shaft. The points are machined so that startup and braking moments are transmitted from the shaft to the load. This design prevents the shaft from slipping or turning independently of the load. Rapid stopping and starting is then possible without rotational play of the object on the shaft.

In converting and winding applications, where it is important that there be no play between the shaft and the core, the collar requires no special tools. The non-adjustable or fixed pintle is installed with a setscrew to hold it in place. The reel/spool or other object is then placed on the shaft and the adjustable or removable pintle is pushed up against the object. The clamping force control on the removable pintle lets users increase or decrease holding power to meet requirements. A quick release feature facilitates reel/tool changeovers. The collars must be used on smooth shafts with no threads. The maintenance-free system is available in ten sizes for shafts with diameters of 10 to 40 mm.

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Motion Control & Automation Technology Magazine

This article first appeared in the April, 2014 issue of Motion Control & Automation Technology Magazine.

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