Particle, hysteresis electromagnetic brakes

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Kendrion (Markdorf) GmbH

Permanent magnet electromagnetic brake / electrical for servo motors / high-torque - 0.1 - 300 Nm

Torque : 0.1 Nm - 300 Nm

This product combines the well-known properties of permanent magnet brakes - Due to a re-design of the magnetic circuit, it features further advantages such as a higher torque at identical size and power consumption, high torque constancy throughout the complete service...

Permanent magnet electromagnetic brake / electrical for servo motors / high-torque - 0.1 - 300 Nm

Torque : 0.1 Nm - 300 Nm

This product combines the well-known properties of permanent magnet brakes - Due to a re-design of the magnetic circuit, it features further advantages such as a higher torque at identical size and power consumption, high torque constancy throughout the complete service...

Permanent magnet electromagnetic brake / emergency / holding / electrical for servo motors - 2.2 - 120 Nm | PM series

Torque : 2.2 Nm - 120 Nm

Features

Torque transfer free of torsional backlash
Zero residual torque at any mounting position
Ambient temperature -5°C to +120°C
wear-free axial movement of the armature
Applications

Servo...

Permanent magnet electromagnetic brake / emergency / holding / electrical for servo motors - 2.2 - 120 Nm | PM series

Torque : 2.2 Nm - 120 Nm

Features

Torque transfer free of torsional backlash
Zero residual torque at any mounting position
Ambient temperature -5°C to +120°C
wear-free axial movement of the armature
Applications

Servo...

Permanent magnet electromagnetic brake / emergency / holding / electrical for servo motors - 0.6 Nm

Torque : max 0.6 Nm

Brake actuated without current: braking effect is generated by permanent-magnetic force. It can be used either as holding brake, emergency stop brake or as working brake.

Features

Electromagnetic...

Permanent magnet electromagnetic brake / emergency / holding / electrical for servo motors - 0.6 Nm

Brake actuated without current: braking effect is generated by permanent-magnetic force. It can be used either as holding brake, emergency stop brake or as working brake.

Features

Electromagnetic ventilation
Backlash-free torque
Suitable for any mounting position
Mountable without running-in process
Applications

Servo motors
Medical engineering
Air technology
Automotive
Gate drives

Kendrion (Aerzen) Permanent magnet brakes open electromagnetically. The braking torque without backlash is generated by permanent magnets. The brakes can be installed in any position. High quality magnets ensure safe functionality. The rated torque is achieved immediately at the time of delivery without any running-in procedure.

Electromagnetic particle clutch and brake - 10 - 320 Nm

Torque : 10 Nm - 320 Nm

The main characteristic of the magnetic particle clutch is the possibility to smoothly change the torque depending on the field voltage....

Electromagnetic particle clutch and brake - 10 - 320 Nm

The main characteristic of the magnetic particle clutch is the possibility to smoothly change the torque depending on the field voltage. To transmit the torque from the external to the internal rotor, specifically alloyed and highly abrasion-resistant iron particles are inserted into the particle gap. Depending on the electromagnetic field, these fine iron particles build magnetic chains and thus transmit the torque. The power of the field determines the stability of the particle chains and also the transmittable torque.
mobac

Electromagnetic particle brake - 0.007 - 1 000 Nm

Magnetic particle brakes and clutches are of simple design. Due to their size they produce a high torque compared to for instance hysteresis brakes. They are having two rotors (inner and outer) and an air gap between these two rotors where the magnetic particles are dispersed...

Electromagnetic particle brake - 0.007 - 1 000 Nm

Magnetic particle brakes and clutches are of simple design. Due to their size they produce a high torque compared to for instance hysteresis brakes. They are having two rotors (inner and outer) and an air gap between these two rotors where the magnetic particles are dispersed in. An electric current passing through the coil creates a magnetic field, which aligns the magnetic powder into the gap. The higher the current, the more rigid the connection between the inner and outer rotor becomes. The principle is the same for brake, clutch and torque limitor.

Advantages:

Noisless work
Torque directly proportional to current
Torque independant from r.p.m. (starting from 30 min)
Strong design, units are able to be used with steady slipping
High torque range to be controlled (approx 1:50)

Applications:

Braking
Torque control, torque limiting
Tension control at winding, unwinding
Starting clutch operation
Calculated braking and starting
of certain masses and inertias

Electromagnetic hysteresis brake - 0.024 - 210 Nm

Advantages
The superior design of these hysteresis devices provide several inherent advantages over magnetic-particle and friction devices. They operate on a frictionless design principle with virtually nor wear. This provides such advantages as: longer expected life, superior torque repeatability, life cycle cost advantages, broad speed range, excellent environmental stability and superior...

Electromagnetic hysteresis brake - 0.024 - 210 Nm

Advantages
The superior design of these hysteresis devices provide several inherent advantages over magnetic-particle and friction devices. They operate on a frictionless design principle with virtually nor wear. This provides such advantages as: longer expected life, superior torque repeatability, life cycle cost advantages, broad speed range, excellent environmental stability and superior operational smoothness.

Control
In an electrically operated hysteresis brake or clutch, adjustment and control of torque is provided by a field coil. This allows for complete control of torque by adjusting DC current to the field coil. Adjustability from a minimum value (bearing drag) to a maximum value of 15 - 35% above rated torque is possible. In a permanent magnet device, the field coil is replaced by a magnet which provides the precise field strength necessary to produce rated torque without the need of electrical excitation. Since the field strength produced by a permanent magnet is a constant value, the resulting torque will also be constant. Physical realignment of the pole structure will result in limited (but predictable) changes in torque. Special designs utilizing this method are available and will allow for adjustments down to approximately 30 - 40% of rated torque.

Longer expected life
Hysteresis brakes and clutches 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.

Permanent magnet hysteresis brake - 0.001 - 15.8 Nm

Function
Magnet assemblies (outer discs) surround our hysteresis assembly (center disc). 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...

Permanent magnet hysteresis brake - 0.001 - 15.8 Nm

Function
Magnet assemblies (outer discs) surround our hysteresis assembly (center disc). 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. Combinations of adjustment angles between these two extremes gives infinite adjustability. Because there are no contacting surfaces, the setting can be maintained indefinitely.

Advantages of permanent magnet hysteresis brakes
Built in ball bearings enable the units to carry sufficient load on the shaft
Shaft length and diameter can be manufactured exactly as per customers requirements
Precise adjustments of torque care for best repeatability of torque
Precise ground strong enough magnets care for friction-free movement and long lifetime.
Cleveland Motion Controls

Electromagnetic particle clutch and brake - 1.5 - 260 ft.lb | EMAG series

Better torque control - Torque is proportional to the supplied current.
EMAG 1 - (1.5 lb. ft.)
EMAG 4 - (4 lb. ft.)
EMAG 9 - (9 lb. ft.)
EMAG 26 - (26 lb. ft.)
EMAG 50 - (50 lb. ft.)
EMAG 90 - (90 lb. ft.)
EMAG 150 - (150 lb. ft.)...

Electromagnetic particle clutch and brake - 1.5 - 260 ft.lb | EMAG series

Better torque control - Torque is proportional to the supplied current.
EMAG 1 - (1.5 lb. ft.)
EMAG 4 - (4 lb. ft.)
EMAG 9 - (9 lb. ft.)
EMAG 26 - (26 lb. ft.)
EMAG 50 - (50 lb. ft.)
EMAG 90 - (90 lb. ft.)
EMAG 150 - (150 lb. ft.)
EMAG 260 - (260 lb. ft.)
Electromagnetic Particle Brakes and Clutches
Features
Wider torque range - 100 to 1 torque range.
Wider Speed Range - Torque is independent of rotational speed.
Lower Power Consumption - Recommended Power Supply rated at 2 amps max at 24 VDC.
Typical current of 1 amp or less required.
Noiseless - Electromagnetics eliminates the annoying squeal that can occur with friction brake pads.
Dustless - Excellent for use in medical and clean environments.
Electromagnetics eliminates the dust create by friction brake pads.
Lower Maintenance - No brake pads to replace.
Lifetime lubrication.
Faster Response Time - Response of electric current is much faster than the movement of compressed air in
the pneumatic brake line.
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