Magnetic powder brakes - Import export

DESCRIPTION The Torque Powder Brakes (TPBSeries) are ideal for applications operating in the low speed range or middle to-high torque range. These magnetic powder brakes provide full torque at zero speed and are convection or air cooled, allowing power ratings up to 900W (2100W with air cooling). APPLICATIONS These units are suited for tension control applications, such as wire winding, foil, film, and tape tension control. Mounted on test benches, TPB Series - Torque Powder Brakes allow performance and reliability testing on driving elements such as electric motors, hand-held power tools, geared motors, reduction gears, and hydraulic transmission systems. Other applications include load simulation for life testing on electric motors, actuators, gearboxes, power steering, and many other rotating devices and assemblies.

Kendrion (Aerzen) Mini 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.

The High Torque series 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 life and an extended temperature range. The High Torque brake is designed to operate dry. The force generated by a permanent magnetic field is utilised to produce the braking effect. To neutralise the braking action, the magnetic flux of the permanent magnets is cancelled by an alternate electromagnetic field (electromagnetically released system). The zero backlash connection between the armature and flange hub ensures zero backlash transmission of the brake torque to the machine shaft (e.g. motor shaft) and reliable release of the High Torque brake with zero residual torque. Thanks to these features, High Torque brakes are ideal for servo motor applications.

The PM Line includes permanent magnet brakes in which the braking force is generated by a permanent magnetic field. The brake thus works in a de-energized condition and fulfill the following functions: Holding, positioning and emergency stop. The neutralization of the braking force is effected by the counteracting electric field, granting a high degree of security, even in the case of power failure. Permanent magnet brakes are characterized by a secure, residual-moment-free lifting in any position, and by a backlash-free transfer of the braking torque. Therefore, they are ideal for servo motor applications.

The Controller 14.422 serves to excite the magnetic particle clutches and brakes. The excitation current can be influenced by a dancer potentiometer or a master voltage. The built-in current controller ensures that, despite varying coil temperature the current is constant. Other important features of the controller are: Setpoint integrator, control amplifier and temperature monitoring through an optional thermal switch at the magnetic particle clutch or brake. Should the body temperature become too high, the controller simply switches off.

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.