Hysteresis Brakes

Hysteresis Brakes

Product Description

Pure Hysteresis Brakes produce torque strictly through a magnetic air gap without the use of magnetic particles or friction components. This method of braking provides far superior operating characteristics (smoother torque, longer life, superior repeatability, high degree of controllability, and less maintenance and down time) which make them the preferred choice for precise tension control during the processing of nearly any material, web or strand.

Specifications and Drawings - English

For complete technical specifications and a general dimension drawing, download the data sheet. For detailed dimension drawings. Click on the PDF icon in the table below. A PDF document will open in a new window. (Adobe Acrobat Reader 7.0, or later, is required.)

ModelMinimum Torque at Rated Current (oz·in)Rated Current (mA)Maximum
Speed (rpm)
Kinetic Power - 5 Minutes (W)Kinetic Power - Continuous (W)Downloads
HB-2.52.514620,000205pdf | step | curve
HB-101013320,0004512pdf | step | curve
HB-161619220,0007520pdf | step | curve
HB-383825015,0009025pdf | step | curve
HB-505025315,0009023pdf | step | curve
HB-14014025312,00030075pdf | step | curve
HB-25025027010,000450110pdf | step | curve
HB-4504504428,000670160pdf | step | curve
HB-7507503837,0001,000200pdf | step | curve
HB-8408406006,0001,340300pdf | step | curve
HB-175017505006,0001,200350pdf | step | curve
HB-3500350010006,0002,400600pdf | step | curve
Obsolete Brake Models
(for information only—these brakes are no longer available)
Replaced With
HB-8813320,0006015HB-10
HB-323225015,0009025HB-38
HB-21021025010,000450110HB-250
HB-4204203008,000670160HB-450
HB-160016005006,0002,400350HB-1750
HB-3200320010006,0004,800600HB-3500

* Kinetic power ratings are maximum values based on limiting coil and/or bearing temperature to approximately 100 ºC, and should not be exceeded. Actual values in service may vary ±50% depending on mounting, ventilation, ambient temperature, etc. *Standard coil voltage is 24 VDC. 90 volt and non-standard coil voltages are available. 12 VDC coils are available on HB-2.5 through HB-840 models.

Specifications and Drawings - Metric

For complete technical specifications and a general dimension drawing, download the data sheet. For detailed dimension drawings. Click on the PDF icon in the table below. A PDF document will open in a new window. (Adobe Acrobat Reader 7.0, or later, is required.)

ModelMinimum Torque at Rated Current (N·m)Rated Current (mA)Maximum Speed (rpm)Kinetic Power - 5 minutes (W)Kinetic Power -
Continuous (W)
Downloads
HB-3M-20,0214520'000205pdf | step | curve
HB-10M-20,0713320'000358pdf | step | curve
HB-20M-20,1421720'0005012pdf | step | curve
HB-50M-20,3525315'0009023pdf | step | curve
HB-140M-21,0025312'00030075pdf | step | curve
HB-250M-21,7527010'000450110pdf | step | curve
HB-450M-23,204428'000670160pdf | step | curve
HB-750M-25,003837'0001'000200pdf | step | curve
HB-1750M-213,00 **6006'0001'200350pdf | step | curve
HB-3500M-226,00 ***12006'0002'400600pdf | step | curve

*Kinetic power ratings are maximum values based on limiting coil and/or bearing temperature to approximately 100 ºC, and should not be exceeded. Actual values in service may vary ±50% depending on mounting, ventilation, ambient temperature, etc. **13 N·m is attainable @ approx. 600 mA. This value may decrease to 12.36 N·m if the brake is powered by any power supply or controller limited to 500 mA. ***26 N·m is attainable @ approx. 1200 mA. This value may decrease to 24.72 N·m if the brake is powered by any power supply or controller limited to 1000 mA. ****Standard coil voltage is 24 VDC. 90 volt and non-standard coil voltages are available. 12 VDC coils are available on HB / MHB-3M through HB / MHB-750M models.

 

Applications

Magtrol Hysteresis Brakes provide precise tensioning for: armature and coil winding, printing and labeling, wire marking, braiding, material slitting, sheeting, weaving, and many other material process applications. They are ideal for any material, strand or web, including: copper wire, fiber-optic cable, textiles, tapes, films, foils, paper, rubber products, nylon, and many others.

Magtrol Hysteresis Brakes provide precise control of wire tension during wind, hook and cut operations of high speed automated winding machines.


Transformer and coil winding operations employing Hysteresis Brakes in open loop control for maintaining precise tension during winding process.


Precision gap control using Hysteresis Brake and photo sensor.
Unwind tension control by means of follower arm with potentiometer, Hysteresis Brake and controller.


Magtrol Hysteresis Brakes offer frictionless, non-breakaway force for tensioning materials during slitting and many other material processing operations.
The indefinite repeatability, controllability and longevity of Magtrol’s Hysteresis devices has earned them recognition in high end, state-of-the-art exercise equipment applications where precise load control and programmed repeatability are essential. The Magtrol Hysteresis Brake is used in precision computerized diagnostic equipment, as well as in regular exercise machines.


Magtrol Hysteresis Brakes are widely used in load simulation applications for life testing on electric motors, actuators, small gas engines, gearboxes, and many other rotating devices and assemblies. The ability of hysteresis devices to withstand high temperatures for prolonged periods of operation without suffering any degradation to their magnetic structures makes them ideal for these applications, as well as environmental testing, and even applications in outer space.


Their ability to produce torque independent of speed makes Hysteresis Brakes the preferred method of braking employed in many dynamometers used for performance testing of motors, actuators, gas engines, etc.


Their ability to produce torque independent of speed also makes Hysteresis Brakes valuable in applying pre-loads for preventing backlash, backdriving loads, and in limiting torque to prevent damage to delicate assemblies. Magtrol Hysteresis Brake used for holding of backdriving load.

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The analog input of the Current-Regulated Supply Module is designed for 0 -10 VDC signals. At the maximum set value of 10 VDC, the output current is adjustable from 0 to 100 %. With the use of adjustable potentiometers, the zero point can be shifted from 0 to 20 %.

 
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