Hysteresis Brake & Clutch Accessories

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                    [post_date] => 2017-04-06 19:03:57
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                    [post_content] => 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.



Additional Information
At the standard bore diameters, actual brake torque at rated current will normally exceed the minimum guaranteed values. Larger bore diameters can be provided, however, reductions in performance will result as bore diameters are increased. Any modification to a large bore brake should be reviewed in detail with Magtrol before ordering.
 
                    [post_title] => LB Series - Large Bore Brakes
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                    [post_content] => Since 1953, Magtrol has created literally thousands of special and modified brake and clutch designs to help solve specific application problems for our customers.
Common Specials and Modifications Include:

 	
Non-Standard Coil Voltages
 	
Special Shaft Configurations: keyways, flats, holes, hollow
 	
Extended Shafts
 	
Forced Air Cooled Brakes
 	
Adjustable Permanent Magnet Brakes
 	
Speed Pickups
 	
Special Mounting Configurations
 	
Nonstandard Lead: material, lengths, location
 	
Higher Torque Devices
 	
High Speed Units
 	
Brake/Clutch Combinations
 	
Dust Covers

                    [post_title] => Hysteresis Device Special Designs & Modifications
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                    [post_content] => In tension control applications that have multiple webs or multiple strands, it is very desirable to match the tension of each web or strand. This is most commonly attained by using a closed loop servo control system which controls current to a braking device through the use of dancer arms, follower arms and in-line tension transducers. The problem with such systems is that each web or strand must be individually controlled, increasing the cost and complicating the system with multiple sensors and power supplies.

Magtrol has developed a system to assure that every brake of a given model designation will be matched, at a predetermined torque and current point, to other brakes of the same model designation regardless of material and manufacturing tolerances. Each brake will be matched at the selected match point to within a tolerance of ±1%. The maximum deviation in torque from brake to brake at any point along their torque/current curve (from 0 torque up to the selected matched torque point) will be less than ±4% of the selected matched torque value. With this level of matching, a system with multiple tension rollers would provide tension consistency within ±1% if set at the matched point with all brakes receiving the same current. The matched point can be any value between 50% and 100% of rated torque, which allows the brakes to be optimized for specific applications. Unless otherwise specified, all brakes are matched at 100 rpm.
Typical vs. Matched Brakes


All single Magtrol Hysteresis Brakes can be matched. When ordering, replace the HB in the Hysteresis Brake model number with MHB. For Large Bore Brakes, LB is replaced with MLB. [table id=54 /]
                    [post_title] => MHB Series - Matched Hysteresis Brakes
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                    [post_content] => Magtrol Hysteresis Permanent Magnet Brakes and Clutches are ideal in applications where electrical power cannot be provided to a brake or clutch coil. While best suited to applications where fixed torque is to be applied, adjustable units can be made specifically tailored to the application. Typically provided as brake units, with the addition of an input shaft, the same unit can be used as a clutch. In a clutch application, the pole/case member becomes the drive element, and the rotor/shaft assembly becomes the driven element of the clutch with torque being transmitted through the magnetic air-gap. Magtrol Hysteresis Permanent Magnet devices provide all the superior operating characteristics of smooth operation, precise repeatability and long life inherent in our standard Hysteresis Brakes and Clutches.
                    [post_title] => HPM/HPMC Series - Permanent Magnet Brakes and Clutches
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                    [post_modified] => 2022-03-15 21:26:17
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            [post_content] => 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.



Additional Information
At the standard bore diameters, actual brake torque at rated current will normally exceed the minimum guaranteed values. Larger bore diameters can be provided, however, reductions in performance will result as bore diameters are increased. Any modification to a large bore brake should be reviewed in detail with Magtrol before ordering.
 
            [post_title] => LB Series - Large Bore Brakes
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