In the BKK coupling, a stainless steel bellows serves as a compensating element for the misalignment or axial displacement of two shafts. They are particularly suitable for torsionally stiff drives of high-resolution rotary angle transducers. The shafts of the BKK coupling are fastened with clamping hubs. Hubs and screws are made of stainless steel. The service life of the couplings (number of revolutions or load changes) depends on the following factors and can therefore only be reliably determined in practical tests: Torque and moment of inertia of the driven encoder, actual parallel and/or angular misalignment, axial clearance of the shafts and ambient temperature are essential parameters.
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