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HB Series | Hysteresis Brakes

Industrial brakes

“ LONG, MAINTENANCE-FREE LIFE Magtrol Hysteresis Brakes produce torque strictly through a magnetic air gap, making them distinctly different from mechanical-friction and magnetic particle devices. Because hysteresis devices do not depend on friction or shear forces to produce torque, they do not suffer the problems of wear, particle aging, and seal leakage. As a result, hysteresis devices typically have life expectancies many times that of friction and magnetic particle devices. LIFE CYCLE COST ADVANTAGES While the initial cost of hysteresis devices may be the same or slightly more than that of their counterparts, the high cost of replacing, repairing and maintaining friction and magnetic particle devices often makes hysteresis devices the most costeffective means of tension and torque control available. EXCELLENT ENVIRONMENTAL STABILITY Magtrol hysteresis devices can withstand significant variation in temperature and other operating conditions. In addition, because they have no particles or contacting active parts, Hysteresis Brakes are extremely clean. Magtrol devices are used in food and drug packaging operations, in clean rooms, and environmental test chambers. OPERATIONAL SMOOTHNESS Because they do not depend on mechanical friction or particles in shear, Hysteresis Brakes are absolutely smooth at any speed. This feature is often critical in wire drawing, packaging and many other converting applications. SUPERIOR TORQUE REPEATABILITY Because torque is generated magnetically without any contacting parts or particles, Hysteresis Brakes provide superior torque repeatability. Friction and magnetic particle devices are usually subject to wear and aging with resultant loss of repeatability. Magtrol devices will repeat their performance precisely, to ensure the highest level of process control. BROAD SPEED RANGE Magtrol hysteresis devices offer the highest slip speed range of all electric torque control devices. Depending on size, kinetic power requirements and bearing loads, many Magtrol Brakes can be operated at speeds in excess of 10,000 rpm. In addition, full torque is available even at zero slip speed and torque remains absolutely smooth at any slip speed. ”
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DESCRITPTION
Magtrol pioneered the technology of applying the principles of hysteresis to meet the critical needs for reliable, smooth and adjustable torque control. Magtrol’s 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.

APPLICATIONS
▪ Precise control of wire tension during wind, hook and cut operation of high-speed automated winding machines
▪ Frictionless, non-breakaway force for tensioning materials during slitting and many other material processing operations
▪ Load simulation applications for life testing on electric motors, actuators, small gas engines, gearboxes, and many other rotating devices and assemblies
▪ Open-loop control for maintaining precise tension during winding process in transformer and coil winding operations
▪ Holding of backdriving loads
▪ Ultimate tension control, regardless of control scheme– dancer roll, follower arm, photo or ultrasonic sensors
▪ Precise load control and programmed repeatability in fitness machines

Ideal for low-torque/high-speed applications with exceptional power ratings Torque up to 3,500 oz·in/26 N·m Speed: up to 20,000 rpm Power: up to 2,400 W Available in Metric or English dimensions Torque independent of speed Long, maintenance-free life Magtrol hysteresis braking technology provides precise torque control independent of shaft speed EMC conforms to European standards
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Precise control of wire tension during wind, hook and cut operation of high-speed automated winding machines Frictionless, non-breakaway force for tensioning materials during slitting and many other material processing operations Load simulation applications for life testing on electric motors, actuators, small gas engines, gearboxes, and many other rotating devices and assemblies Holding of backdriving loads Ultimate tension control, regardless of control scheme– dancer roll, follower arm, photo or ultrasonic sensors

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