Large-bore brake LB series

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For many years Magtrol has designed Hysteresis Brakes with large bores, and without a shaft or bearings. These brakes are used for superior tension control for helical wrapping, braiding and other feed through applications. Magtrol Large Bore Brakes are used in machines for manufacturing cable, wire, fiber optic cable, rope and tape, among others. Magtrol Large Bore Brakes provide smooth, repeatable torque, largely independent of speed. Maximum speeds up to 8000 rpm are available. These brakesconsist of two primary parts: a pole/case assembly and a rotor. The pole/case assembly is usually mounted in a stationary position within the machine, while the rotor is shaft mounted concentrically within the pole/case assembly. The pole/case assembly and rotor are available are manufactured in standard bore sizes and hole patterns. Variations to the standard dimensions can be made based on customer requirements. Certain modifications to the brake, such as a larger bore dimension, may impact its performance ratings. Additional options available include rotor mounting flanges, power supplies, torque-current curves and other coil voltages. Contact Magtrol for more information. Operating Considerations Alignment Notes The pole/case assembly and the rotor are shipped as separate items. It is the responsibility of the machine designer to assure proper alignment of the mating brake parts in the final assembly. These components must be mounted so that the concentricity and perpendicularity between the rotor and pole does not exceed the specified tolerances. Refer to individual LB model drawings for further details.