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  1. Power Transmission - Mechanical components
  2. Mechanical Transmission
  3. Bellows coupling
  4. R + W Coupling Technology
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Flexible coupling BK8 series
bellowscompactmetal bellows

Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 2
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 3
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 4
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 5
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 6
Flexible coupling - BK8 series - R + W Coupling Technology - bellows / compact / metal bellows - image - 7
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Characteristics

Type
flexible, bellows
Construction
compact, metal bellows
Product applications
shaft, flange
Performance
maintenance-free
Other characteristics
torque, ATEX, custom-made
Installation system
flange
Torque

Max.: 2,600 Nm
(1,917.661588 ft.lb)

Min.: 15 Nm
(11.063432 ft.lb)

Rotational speed

Max.: 10,000 rpm
(62,831.8531 rad.min-1)

Min.: 0 rpm
(0 rad.min-1)

Description

Bellows coupling with ISO flange mounting Features Compact simple design Small installation space For ISO flange output gearboxes Temperature range -30 °C to +100 °C (-22 °F to +212 °F) Design One clamping hub on one end with an integral flange and adapter flange on the other end Brief overloads of up to 1.5x the rated torque are acceptable. Material Bellows: high grade stainless steel Hubs: up to series 300 – aluminum from 1500 series – steel Adapter flange: steel Properties General information Service life R+W bellows couplings are fatigue resistant and wear free for an infinite service life, as long as the technical limits are not exceeded Fit clearance Overall shaft / hub clearance of 0.01 – 0.05 mm Special solutions Various materials, tolerances, dimensions and performance ratings available for custom applications on request ATEX (Optional) For use in hazardous zones 1/21 and 2/22, the metal bellows has been authorized under directive 94/9/EG and is available with certification

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Catalogs

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Exhibitions

Meet this supplier at the following exhibition(s):

SPS 2026
SPS 2026

24-26 Nov 2026 Nuremberg (Germany) Hall 4 - Stand 219

  • More information

    Other R + W Coupling Technology products

    PRECISION COUPLINGS

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.
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