R+W
BK7 - Bellows coupling
With expanding shaft
For hollow shaft mounting, short design saves installation space, easy to mount
Features
- For hollow shaft mounting
- Short design saves installation space
- Easy to mount
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
Applications
- 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.
- Temperature range -30 °C to +100 °C (-22 °F to +212 °F)
Technical Specifications
Design
- One clamping hub on one end with an expanding shaft on the other end
- Brief overloads of up to 1.5x the rated torque are acceptable.
Material
- Hubs: up to series 60 – aluminum, from series 150 – steel
- Expanding mandrel: steel
- Inner cone: steel
- Tapered male segment: high strength plastic
- Bellows: high grade stainless steel
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
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