Kendrion Worldwide

Division Automotive

Kendrion Holding

Kendrion N.V. is a public limited liability company incorporated under the laws of the Netherlands, with its registered office in Zeist.

For general requests:

> Contact
Kendrion Group Services
permanent magnet brake with high torque

High Torque

Freni a magnete permanente con coppia elevata

Questo prodotto riunisce in se tutte le ben note proprietà dei freni a magnete permanente. Il circuito magnetico e' stato ri-progettato in modo da offrire ulteriori vantaggi, quali una coppia più elevata a parità di taglia e di consumo energetico, costanza della coppia frenante per l'intera durata di servizio e campo delle temperature di esercizio esteso.

High Torque

La serie HIGH TORQUE (coppia elevata) unisce tutte le tradizionali caratteristiche dei freni a magnete permanente, ma grazie al suo circuito magnetico opportunamente ridisegnato offre anche ulteriori vantaggi, quali una coppia più elevata a parità di dimensioni e di consumo energetico, costanza della coppia frenante per l'intera durata di servizio e un campo di temperature di esercizio più esteso.

Specifiche & Dati tecnici

Coppie nominali0,1 Nm - 300 Nm
Tensione24 V CC
Classe di protezioneIP 00
Campo di temperatura-15 °C a +120 °C, opzionale -40 °C

This text is only available in English

Operating principle

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.

Brake design

The firmly fitted field coil is installed between the housing and flange of the High Torque brake. The flying leads required to connect the field coil exit at defined positions on the brake. The permanent magnets installed in axial direction between the housing and flange generate the magnetic field required to produce the braking action. The armature is connected with the flange hub by means of segmental springs and rivet fasteners to establish an axially movable, torsion-proof and friction-free connection. This ensures zero residual torque during horizontal or vertical brake operation. The rated air gap 's' between the armature and housing of the High Torque brake is automatically adjusted during brake mounting (e.g. through mounting tolerances). The flange hub is attached to the machine shaft (e.g. motor shaft) in such a way that a torsion-proof and axially fixed connection is achieved. The permanent magnetic field attracts and pulls the armature in frictional contact with the housing and flange. The resulting friction force generates the brake torque. When DC voltage is applied to the field coil of the High Torque brake, the alternate electromagnetic field offsets the force exerted on the armature by the permanent magnetic field and the brake is released as a result of the spring force. Except for the minimal force exerted by the segmental springs, the shaft to be braked is not exposed to any other axial force.