This mechanical friction torque limiter was created in response to a customer’s request for a slip clutch with a 3180 pound inch setting and a 44L100 pilot mounted pulley. The first challenge of this application was that the outside diameter of the torque limiter could not exceed the diameter of the pulley. Mach III designed this unit with eight friction surfaces to deliver the required torque within the diameter restriction.
The second challenge was that the unit had to fit on a 1.25 Inch shaft. The design could accommodate a 1.25 inch bore, but there was no room for a keyway. Mach III extended the drive hub and fitted it with a locking collar to connect the torque limiter to the shaft.
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Mach III will modify its catalog model friction clutches, brakes and torque limiters or create an original design that connects to the shaft the way you prefer. Pictured are a few examples, clockwise from top left:
- Traditional bore and keyway with set screw. Available in both Imperial and Metric sizes with standard or non-standard keyways.
- Broached for a square shaft
- Extended hub with bore and keyway, slotted for connection to the shaft with clamp collar
- Extended hub with bore and shrink disc
Visit Our Custom Solutions Page To Learn More
Mach III offers a variety of catalog models for shaft-to-shaft coupling. Those catalog models provide shaft attachment with a keyway and set screw.
For this application, the customer wanted to attach the coupling half to the shaft using a keyless frictional locking device. Mach III outfitted a catalog model through shaft pilot mount clutch, C5A2R-STH, with a custom designed coupling.
Would a custom design make your assembly process easier? Mach III has custom adapters and couplings options for many catalog models.