ARPEX All-Steel Coupling

Torsionally rigid, backlash-free, all-steel multiple-disk coupling
Nominal torque range from TKN = 5 Nm up to 10,000,000 Nm
Temperature range: from –40 °C to +280 °C

Versatile and compact

ARPEX® all-steel couplings are very compact and stand out due to their particularly good power-to-weight ratio. Their versatility makes them suitable for universal use.

In these all-steel couplings, the torque is transmitted by torsionally rigid, flexible disks. The disks are joined together with bushes and rings to form a compact disk pack which ensures easy and reliable installation.

Two disk packs connected to a spacer are capable of compensating for axial, radial and angular shaft misalignments. Couplings with one disk pack can only compensate for angular and axial misalignments.

The ARPEX coupling covers a wide range of products by means of many different series and sizes:

ARS-6 series: standard series for universal use
ARC-8 series: optimized for high torques
ARP-6 series: optimized for pump drives (according to API 610/API 671)
ARW-4/6 series: optimized for large shaft misalignments
ARF-6 series: optimized for extremely restricted space
Composite series: optimized for drives with large shaft distances

Your benefits at a glance

Compensation in angular, radial and axial shaft misalignment possible
Independent of the direction of rotation (suitable for reversing operation)
Torsionally rigid and free of circumferential backlash
Low restoring forces
Low-vibration (even with maximum permissible speeds)
Easy assembly through compact structural design
Conformity to API 610 and API 671
Suitable for use in potentially explosive environments; certified according to 2014/34/EU (ATEX)

Made in Germany, worldwide in use

Mining and Cement: conveyor belts, apron conveyors, bucket elevators, tube mills, bucket excavators, crushers, roller presses, separators, heating technology, slurry pumps
Steel Production: shears, reversing rolling mills, pilger rolling mills
Cranes: hoisting and luffing gear system, slewing gear systems, trolley and travel gear systems
Marine and Shipbuilding: single-engine ships, multi-engine ships, dredgers, generator gearboxes, installation vessels
Oil and Gas: installation vessels, pumps, fans, compressors, air condensers, jack-up rigs
Power Generation: air condensers, generators, gas turbines, cooling towers, water turbines, boiler feed pumps
Chemicals and Pharmaceuticals: driers, pumps and compressors, mixers, cooling towers, agitators, reactors
Plastics and Rubber: single- and double-screw extruders
Pulp and Paper: waste paper, wet section, dry section, smoothers and cylinders, reel winders, coating machines, calenders, wastewater purification plants
Water and Wastewater: aerators, water screw pumps
Food and Beverage: lauter tuns, reactors, agitators, mixer drives, filling systems
Sugar: generators, steam turbines, sugar cane mills
Railway Vehicles: railway couplings
Passenger Transport: cable cars
Other fields of application: test benches, wood milling, packaging machines

Did you know?

All coupling parts like hubs, spacers and flanges are manufactured from high-grade steel; the plates are made from stainless, hard-rolled CrNi spring steel. This is why the ARPEX does not need maintenance and operates without wear. Thus, a very long service life can be ensured. Our ARPEX couplings deliver the proof: they have been in use in the most diverse applications for decades.