Product Description
Hollow Shaft Hysteresis Brakes Used in Tension Control(Magnetic Brake)



Large Bore Hysteresis Brakes without Bearings
Hysteresis Brakes with a large bore are mainly used for tension control at flyer payoff operation equipment, at helical wrapping operation, and braiding application. These brakes are supplied without bearings and are also available as a "matched" design upon request.


The bearings must be provided by the machine designer. The pole/case assembly and the rotor are shipped as separate items and it is the responsibility of the machine designer to ensure proper alignment and concentricity of the mating brake parts in the final assembly.

The mounting structure for these parts must be such that concentricity between the rotor OD (outside diameter) and the case ID (inside diameter), which forms the outer segment of the air gap, does not exceed 0.015 mm (0.0006"). Additionally, the run- out of the rotor face should not exceed 0.025 mm (0.001").




Applications:

The straightforward design of HT Hysteresis Brakes and Clutches has made them ideal for unique applications requiring special equipment interface or mounting configurations, such as our Large Bore Brakes, which are widely used on special equipment for helical wrapping and braiding operations.
1. Typical helical wrapping operation in which a rotating spindle winds onto a laterally moving core with the supply reel tension being controlled by a HT Hysteresis Brake.
2. Flyer Control: The brake pole/case assembly is bolted to the machine frame and a hollow shaft, with bearings, is mounted in the pole. The hollow shaft, rotor and flyer bobbin form one assembly to tension the winding material.




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