FLEXDUR

FLEXDUR-couplings are flexible compensating couplings of all metallic design which transmit the torque in a torsionally rigid and backlash-free manner. The transmission elements are disc packs of stainless spring steel plates which are attached to the coupling components by closetolerance bolts.

The most important characteristics and advantages of FLEXDUR-couplings:

• Torsionally rigid torque transmission with zero torsional backlash
• Wear-free compensation of axial, radial and/or angular shaft displacements
• ittle restoring forces in the case of shaft displacements
• Neither maintenance, nor lubrication required
• For use at ambient temperatures from – 25 °C to + 250 °C
• Compact design even suited for high and very high rotational speeds
• Infinite life, proper shaft alignment provided

ArcuDent Toothcoupling

The ArcuDent Toothcoupling is a double-jointed steel coupling. The teeth of the hubs and covers receive shape corrections to allow the highest misalignment capacity. It is a flexible, but nonetheless torsion-resistant coupling.

The most important characteristics and advantages of ArcuDent Toothcouplings:

• Special Shape of tooth in order to limit noise and vibrations interferences
• Ring Gear: Gear Teeth optimized by finite elements
• Tightness with standard o-rings that guarantee the long life of couplings
• Special gear teeth realized in order to increase the contact surface and to limit the superficial pressure
• Gear Hub: Bore hub capacity up to 800 mm optimization by finite elements
• Grade 12.9 screws allow for force-locking torque transmission
• EX-safety according to ATEX-standards

Barrel couplings

The barrel coupling consists of a sleeve provided with semicircular toothing around its internal diameter and a hub that is externally toothed in a similar way. A series of cylindrical barrels, of hardened steel, are inserted in the holes formed by this toothing to act as power transmission elements. Covers with their corresponding special seals serve to assure the perfect tightness of the inner zone, preventing the penetration of dust and guaranteeing the continuity of the necessary lubrication.

The most important characteristics and adcantages of barrel roll couplings:

• for alignment error compensation
• for ease of assembly
• especially wear-resistant with high durability
• minimises effect of alternative bending of the torque on the toothing
• designed for bearing large radial loads by distributing them over large barrel support surfaces
• Perfect tightness of the inner zone prevent the penetration of dust