ONYX Metal Bellow Couplings are designed especially for servo motor applications where high torsional stiffness, backlash free power transmission and low inertia is required. Bellow Coupling is an assembly of two hubs and thin walled stainless steel bellows. The characteristics of bellows makes them an ideal medium for transmitting torque, while absorbing misalignment loads. Bellow Couplings compensate radial, axial and angular misalignment between two shafts.

The primary function of flexible shaft couplings is to transmit rotary power very precisely between the couple shafts. Bellow Couplings are specifically used because of their high level of torsional stiffness, low moment of inertia and the capability to precisely transmit angle and torque.