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R+W BK series metal bellows drive couplings

RW BK range
BK range of drive couplings
RW BK1
BK1 series with flange mount from 15-10,000Nm
RW BK2
BK2 series with clambing hub from 15-1,500Nm
RW BK3
BK3 series with tapered conical sleves from 15-10,000Nm
RW BK4
BK4 series for Fanuc drives from 15-150Nm
RW BK5
BK5 series with tapered press-fit connection from 15-1,500Nm
RW BK6
BK6 series with conical sleeve and tapered press-fit connection from 15-1,500Nm
RW BK7
BK7 series with expanding shaft from 15-300Nm

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.

RW-BK brochure (3.3 MB)
Datasheet for BK series couplings