Torsionally flexible claw couplings with rated torque up to 85,000Nm

N-EUPEX and N-EUPEX DS claw couplings from JBJ Techniques connect machines, compensate for shaft misalignment, whilst generating only low restorative forces. The torque is transmitted through elastomer elements, giving the coupling typically flexible properties.

N-EUPEX couplings are overload-holding. By contrast, the N-EUPEX DS series is overload-shedding, designed so that overload or advanced wear causes irreparable damage to the elastomer elements. The metal parts of N-EUPEX DS couplings can then rotate freely against one another without contact.

N-EUPEX flexible shaft couplings benefit from a modular principle and have a very simple construction. N-EUPEX types are made up of subassemblies to suit requirements. The couplings are assembled by simply fitting the coupling halves together. Wear is restricted to the elastomer elements, which must be replaced at the end of their service life. Depending on type, the elastomer elements can be changed without moving the coupled machines.

The coupling parts are readily available from stock and are mostly finish-machined, with finished bore, keyway, set screw and balancing.

The N-EUPEX coupling is available as a catalogue standard in 23 sizes with a rated torque up to 85,000 Nm. The coupling is suitable for use at ambient temperatures of between -30°C and +80°C. By using alternative elastomer elements, the permissible ambient temperature range can be extended to between -50°C and +100°C. Frequently, the coupling is used to connect the motor to the gear unit input shaft. The coupling is suitable especially for drives with uniform to average dynamic loads.

Typical applications for the couplings include pump drives, ventilator drives or crane running gear. Furthermore, N-EUPEX couplings can be used as add-on couplings, particularly on FLUDEX fluid couplings or ARPEX AKR safety couplings. In the case of drives with a diesel engine, N-EUPEX couplings are suitable for driven machines with a low mass moment of inertia. In the case of diesel engine drives, the actual dynamic coupling load should be checked by measurement or torsional vibration calculations.

Find out more about Torsionally Flexible Claw Couplings here