BKS
Metal Bellows Coupling with stainless steel clamping hub

15 - 500 Nm

BKS METAL BELLOWS COUPLING WITH STAINLESS STEEL CLAMPING HUB

  • BKS
  • Specifications BKS

    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien15
    Rated torque (Nm)TKN15
    Overall length (mm)A-245
    Fit length (mm)C17
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D212-28
    Outside diameter (mm)B49
    Moment of inertia (10-3 kgm2)Jges.0,1
    Approximate weight (kg)0,27
    Torsional stiffness (10³ Nm/rad)CT23
    Axial ± (mm))max.1
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca30
    Lateral spring stiffness (N/mm)Cr315
    Fastening screw (ISO 4762)EM5
    Tightening torque of the fastening screw (Nm)E8
    Distance between centerlines (mm)F17,5
    Distance (mm)G6
    Speed max. with G = 2.5 balancing (min-1)60000
    15
    CAD
    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien30
    Rated torque (Nm)TKN30
    Overall length (mm)A-252
    Fit length (mm)C20
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D214-32
    Outside diameter (mm)B56
    Moment of inertia (10-3 kgm2)Jges.0,2
    Approximate weight (kg)0,42
    Torsional stiffness (10³ Nm/rad)CT31
    Axial ± (mm))max.1
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca50
    Lateral spring stiffness (N/mm)Cr366
    Fastening screw (ISO 4762)EM6
    Tightening torque of the fastening screw (Nm)E15
    Distance between centerlines (mm)F20
    Distance (mm)G7,5
    Speed max. with G = 2.5 balancing (min-1)50500
    30
    CAD
    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien60
    Rated torque (Nm)TKN60
    Overall length (mm)A-266
    Fit length (mm)C24
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D216-35
    Outside diameter (mm)B66
    Moment of inertia (10-3 kgm2)Jges.0,53
    Approximate weight (kg)0,78
    Torsional stiffness (10³ Nm/rad)CT72
    Axial ± (mm))max.1,5
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca67
    Lateral spring stiffness (N/mm)Cr679
    Fastening screw (ISO 4762)EM8
    Tightening torque of the fastening screw (Nm)E40
    Distance between centerlines (mm)F23
    Distance (mm)G9,5
    Speed max. with G = 2.5 balancing (min-1)50000
    60
    CAD
    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien150
    Rated torque (Nm)TKN150
    Overall length (mm)A-276
    Fit length (mm)C30
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D219-42
    Outside diameter (mm)B82
    Moment of inertia (10-3 kgm2)Jges.1,5
    Approximate weight (kg)1,5
    Torsional stiffness (10³ Nm/rad)CT141
    Axial ± (mm))max.2
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca77
    Lateral spring stiffness (N/mm)Cr960
    Fastening screw (ISO 4762)EM10
    Tightening torque of the fastening screw (Nm)E75
    Distance between centerlines (mm)F27
    Distance (mm)G11
    Speed max. with G = 2.5 balancing (min-1)40500
    150
    CAD
    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien300
    Rated torque (Nm)TKN300
    Overall length (mm)A-289
    Fit length (mm)C34
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D224-60
    Outside diameter (mm)B110
    Moment of inertia (10-3 kgm2)Jges.5,5
    Approximate weight (kg)2,9
    Torsional stiffness (10³ Nm/rad)CT157
    Axial ± (mm))max.2
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca112
    Lateral spring stiffness (N/mm)Cr2940
    Fastening screw (ISO 4762)EM12
    Tightening torque of the fastening screw (Nm)E120
    Distance between centerlines (mm)F39
    Distance (mm)G13
    Speed max. with G = 2.5 balancing (min-1)40000
    300
    CAD
    BKS Series
    Rated torque (Nm)TKN
    Overall length (mm)A-2
    Fit length (mm)C
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D2
    Outside diameter (mm)B
    Moment of inertia (10-3 kgm2)Jges.
    Approximate weight (kg)
    Torsional stiffness (10³ Nm/rad)CT
    Axial ± (mm))max.
    Lateral ± (mm)max.
    Angular ± (degree)max.
    Axial spring stiffness (N/mm)Ca
    Lateral spring stiffness (N/mm)Cr
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Speed max. with G = 2.5 balancing (min-1)
    CAD Portal
    BKS Serien500
    Rated torque (Nm)TKN500
    Overall length (mm)A-295
    Fit length (mm)C35
    Inside diameter* possible from Ø to Ø H7 (mm)
    D1/D232-75
    Outside diameter (mm)B123
    Moment of inertia (10-3 kgm2)Jges.8,1
    Approximate weight (kg)3,5
    Torsional stiffness (10³ Nm/rad)CT290
    Axial ± (mm))max.2,5
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca72
    Lateral spring stiffness (N/mm)Cr2200
    Fastening screw (ISO 4762)EM12
    Tightening torque of the fastening screw (Nm)E125
    Distance between centerlines (mm)F45
    Distance (mm)G13
    Speed max. with G = 2.5 balancing (min-1)30000
    500
    CAD

    Properties

    • Design:
      • With a single ISO 4762 radial clamping screw per hub.
      • 
Laser welded connection between hubs and bellows.
      • Self opening clamp system optional: Loosening the clamping screw applies force to the pin, which forces the clamp into the open position for easy mounting and dismounting.
    • Temperature range: -40° C to +300° C (-40° F to +572° F)
    • Tolerance: Overall clearance between hub and shaft 0.01-0.05 mm.
    • Material:Bellows, clamping hubs, and clamping screws made from stainless steel; detailed specifications upon request.
    • Speeds: Up to 10,000 rpm;
in excess of 10,000 rpm with finely balanced version (up to G = 2.5).
    • Properties of Bellows Coupling Model BKS:
      • for high temperatures
      • compact
      • easy to mount
      • suited for space restricted installations


    Overview