A+ A A-

Magnetic Hysteresis Brakes & Clutches

Magnetic Hysteresis Brakes & Clutches
zoom Zoom image

Precise, permanent, worry-free tension control for fibre-optic cable, light gauge wire, and a variety of power transmission applications.

Magnetic Hysteresis Brakes use permanent magnets surrounding a hysteresis disc to provide a constant torque, without external power. By varying the displacement of the magnetic hysteresis disk, this torque can be quickly adjusted by a machine operator. The magnetic brakes are ideally suited to control winding applications in the wire, cable and converting industries and anywhere a constant torque is required. There is no magnetic particle leak (the magnetic field is fully contained within the device). As the braking force is created by non-contact means (magnetic field instead of friction) the device is subject to minimum wear and is almost maintenance free. The devices can also be used in custom form as magnetic drive couplings for environmentally sealed units or as a torque limiter on a rotating drive system.

 

Why use Magnetic Hysteresis Brakes?
• Constant torque independent of shaft (rotor) speed
• No break-away torque
• No contacting or wearing parts
• No friction elements - same smooth torque year after year
• No magnetic particles to leak or contaminate end product
• Virtually maintenance free
• Silent in operation
• Operable in some of the most difficult wet environments
• No external electricity to operate
• Brake (with Shaft) and Clutch (with Hollow Shaft) available
• Custom designs are also available.

 

         = Ball bearings for light duty or tapered roller bearings for heavy overhung loads guarantee the right brake for your application.

         = We magnetise all our own magnets to give you the right amount of poles, gauss and saturation for your application. This guarantees that brakes and clutches purchased from us years ago are the same as those purchased today.

         = Special clamping arrangement allows easy disassembly and interchangeability should you decide to change a shaft or to service our brakes at some time in the future.

         = The hysteresis disc is the heart of our design. The heat treating and grinding of this element assure years of trouble-free performance.

         = Hundreds of shaft variations are available. Simply specify the shaft dimensions "A" and "B" for custom designs. On all of our ball bearing designs, the shafts can be easily interchanged and reversed in the field.

 

How They Operate:

All important internal clearances are ground to tolerances of less than .025mm (.001 inch). Magnet assemblies (purple) surround our hysteresis assembly (yellow). When like poles face each other, they produce maximum magnetic saturation of the hysteresis disc, forcing lines of flux to travel circumferentially through the hysteresis disc. This produces maximum torque.

When opposite poles face each other, they produce minimum saturation of the hysteresis disc. The lines of flux travel right through the hysteresis disc. This produces minimum torque.

Combinations of adjustment angles between these two extremes gives infinite adjustability. Because there are no contacting surfaces, the setting can be maintained indefinitely.

 

              

 

 

513 Series - Shaft Mount

Torque: 0.001 to 0.014 Nm
Bending Moment: 0.22 Nm 
Heat Dissipation: 2.2 watts
Maximum RPM at Full Torque: 1500

513-photo.gif
 

520 Series - Shaft or Stud Mount

Torque: 0.003 to 0.14 Nm
Bending Moment: 1 Nm 
Heat Dissipation: 13 watts 
Maximum RPM at Full Torque: 900

520 shaft pic.gif
 
 

523 Series - Shaft, Coupling or Hollow Mount

Torque: 0.03 to 1.36 Nm
Bending Moment: 9 Nm 
Heat Dissipation: 28 watts 
Maximum RPM at Full Torque: 200

523 shaft pic.gif
 

527 Series - Shaft Mount

Torque: 0.003 to 0.14 Nm
Bending Moment: 4 Nm 
Heat Dissipation: 13 watts 
Maximum RPM at Full Torque: 900

527-photo.gif
 
 

535 Series - Shaft Mount

Torque: 0.11 to 2.80 Nm
Bending Moment: 13.5 Nm 
Heat Dissipation: 72 watts
Maximum RPM at Full Torque: 245

535 pic.gif
 

MB70HD Series (608) - Shaft Mount

Torque: 0.42 to 7.9 Nm
Bending Moment: 225 Nm 
Heat Dissipation: 150 watts 
Maximum RPM at Full Torque: 180

608-photo.gif
 
 

MB6HD Series (609) - Shaft Mount

Torque: 0.035 to 0.62 Nm
Bending Moment: 12 Nm 
Heat Dissipation: 18 watts 
Maximum RPM at Full Torque: 280

609-photo.gif
 

610 Series - Shaft, Coupling or Hollow Mount

Torque: 0.14 to 4.5 Nm
Bending Moment: 17 Nm 
Heat Dissipation: 95 watts 
Maximum RPM at Full Torque: 200

610 shaft pic.gif
 
 

655 Series - Shaft Mount

Torque: 0.014 to 0.56 Nm
Bending Moment: 5 Nm 
Heat Dissipation: 18 watts 
Maximum RPM at Full Torque: 300

655-photo.gif
 

663 Series - Shaft Mount

Torque: 0.33 to 7.9 Nm
Bending Moment: 23 Nm 
Heat Dissipation: 150 watts
Maximum RPM at Full Torque: 180

663 shaft pic.gif
 
 

806 Series - Hollow Mount

Torque: 0.33 to 7.9 Nm
Bending Moment: 23 Nm 
Heat Dissipation: 150 watts 
Maximum RPM at Full Torque: 180

806 hollow pic2.gif
 

MB13HD Series (880) - Shaft Mount

Torque: 0.15 to 1.46 Nm
Bending Moment: 225 Nm 
Heat Dissipation: 28 watts 
Maximum RPM at Full Torque: 180

880 shaft.gif
 
 

MB140 Series (929) - Shaft Mount

Torque: 0.68 to 15.8 Nm
Bending Moment: 23 Nm 
Heat Dissipation: 180 watts
Maximum RPM at Full Torque: 115

929 pic.gif
 
 
 
 
Please download the PDF below for more information.

Tel: +44 (0) 1923 222 227
Fax: +44 (0) 1923 219 700
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Copyright © 2018 Techna International Ltd. All Rights Reserved • Terms of Use

By using our website, you agree to our use of cookies • More Info