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Current location: Home Product R+W BK7-Bellows coupling with expanding shaft
  • BK7-Bellows coupling with expanding shaft
  • BK7-Bellows coupling with expanding shaft
BK7-Bellows coupling with expanding shaft
  • For hollow shaft mounting
  • Short design saves installation space
  • Easy to mount


DetailsParameter
  • Features

    • For hollow shaft mounting
    • Short design saves installation space
    • Easy to mount

    Temperature range
    • -30 °C to +100 °C (-22 °F to +212 °F)

    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
      • Bellows: high grade stainless steel
      • Hubs:
        • up to series 60 – aluminum
        • from series 150 – steel
      • Expanding mandrel: steel
      • Inner cone: 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


      Fit clearance
      • Overall shaft / hub clearance of 0.01 – 0.025 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


    BK7 15 BK7 30 BK7 60 BK7 150 BK7 300
    Model BK7 15 45 BK7 15 52 BK7 30 53 BK7 30 61 BK7 60 62 BK7 60 72 BK7 150 71 BK7 150 83 BK7 300 84 BK7 300 98
    Rated torque (Nm) 15 15 30 30 60 60 150 150 300 300
    Coupling length (mm) 45 52 53 61 62 72 71 83 84 98
    Bore diameter from Ø to Ø H7 (mm) 8-28 8-28 10-30 10-30 12-35 12-35 19-42 19-42 30-60 30-60
    Outside diameter (mm) 49 49 55 55 66 66 81 81 110 110
    Torsional stiffness (10³ Nm/rad) 20 15 39 28 76 55 175 110 450 350
    shaft length 20 20 25 25 27 27 32 32 45 45
    Shaft from Ø to Ø h7 (mm) 13-25 13-25 14-30 14-30 23-38 23-38 26-45 26-45 38-60 38-60



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