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R+W BK series metal bellows drive couplings
Bellows Coupling series BK are rated for torque levels from 15 - 10,000 Nm depending on the model. Shaft sizes possible range from 8-190mm.
The BK series couplings are maintenance-free and have an infinite service life, if the tolerances are not exceeded.
The bellows are made of flexible, high-grade stainless steel. The hubs are made from aluminium.
The couplings provide completely backlash free power transfer.