Flexible coupling: barrel coupling
JAURE
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. Two double-lamina elastic rings mounted on the hub, one on each side of the toothing, limit the axial displacement of the barrels.
The convex shape of the barrels and the internal spaces of the toothing allows the oscillation of the hub relative to the sleeve, compensating angular misalignments of ± 1º 30’ and an axial displacement that varies between ± 3 mm and ± 8 mm.
Torque is transmitted to the drum’s receiving flange, generally by two diametrically opposed flat driving surfaces, located at the periphery of the coupling flange, and also by means of a series of bolts which, at the same time, serve as connection with the drum.
Other connection systems, such as adjusted spring pins or similar, can also be used following the adequate preparation of the flanges
