If far apart drive axles of, for example, portal robots must be synchronized, conventional couplings are not sufficient. Here extra long models are required to bridge the long distances. Satisfied with their distance couplings KBK Antriebstechnik the demand for such overlong couplings. A special precision tube with very high stiffness values prevents deflection due to the coupling length and ensures maximum concentricity.
The new range with outside diameters from 30 to 110 mm is suitable for shaft diameters from 4 to 60 mm. It covers the torque range from 10 to 300 Nm and is available in two basic designs. With metal bellows made of stainless steel, the new coupling type is suitable for highly dynamic drives and special precision requirements. The metal bellows reduces the bearing load of the restoring forces occurring due to shaft misalignment to a minimum.
Spacer couplings with elastic polyurethane sprockets between the hubs on the other hand provide shock absorption and vibration damping. The overlong elastomer clutches are available with sprockets of different Shore hardnesses; depending on whether the use of the clutches requires high or low torsional stiffnesses. For easier assembly of couplings up to 3 m long, the product line is available as standard in half shell design. On customer's request, however, all other types of connection such as the popular clamping hubs or outer cone connections as well as custom-made products are also possible. Even torques over 300 Nm and lengths of more than 3 m can be realized.