BKL
Metal Bellows Coupling Economy Class with clamping hub

2 - 500 Nm

BKL METAL BELLOWS COUPLING ECONOMY CLASS WITH CLAMPING HUB

  • BKL
  • Specifications BKL

    BKL 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
    Hub material
    CAD Portal
    BKL Serien2
    Rated torque (Nm)TKN2
    Overall length (mm)A-230
    Fit length (mm)C10,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D24-12,7
    Outside diameter (mm)B25
    Moment of inertia (10-3 kgm2)Jges.0,002
    Approximate weight (kg)0,02
    Torsional stiffness (10³ Nm/rad)CT1,5
    Axial ± (mm))max.0,5
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca8
    Lateral spring stiffness (N/mm)Cr50
    Fastening screw (ISO 4762)EM3
    Tightening torque of the fastening screw (Nm)E2,3
    Distance between centerlines (mm)F8
    Distance (mm)G4
    Hub materialAluminium
    optional Steel
    2
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien4,5
    Rated torque (Nm)TKN4,5
    Overall length (mm)A-240
    Fit length (mm)C13
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D26-16
    Outside diameter (mm)B32
    Moment of inertia (10-3 kgm2)Jges.0,007
    Approximate weight (kg)0,05
    Torsional stiffness (10³ Nm/rad)CT7
    Axial ± (mm))max.1
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca35
    Lateral spring stiffness (N/mm)Cr350
    Fastening screw (ISO 4762)EM4
    Tightening torque of the fastening screw (Nm)E4
    Distance between centerlines (mm)F11
    Distance (mm)G5
    Hub materialAluminium
    optional Steel
    4,5
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien10
    Rated torque (Nm)TKN10
    Overall length (mm)A-244
    Fit length (mm)C13
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D26-24
    Outside diameter (mm)B40
    Moment of inertia (10-3 kgm2)Jges.0,016
    Approximate weight (kg)0,06
    Torsional stiffness (10³ Nm/rad)CT9
    Axial ± (mm))max.1
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca30
    Lateral spring stiffness (N/mm)Cr320
    Fastening screw (ISO 4762)EM4
    Tightening torque of the fastening screw (Nm)E4,5
    Distance between centerlines (mm)F14
    Distance (mm)G5
    Hub materialAluminium
    optional Steel
    10
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien15
    Rated torque (Nm)TKN15
    Overall length (mm)A-258
    Fit length (mm)C21,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D28-28
    Outside diameter (mm)B49
    Moment of inertia (10-3 kgm2)Jges.0,065
    Approximate weight (kg)0,16
    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
    Distance (mm)G6,5
    Hub materialAluminium
    optional Steel
    15
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien30
    Rated torque (Nm)TKN30
    Overall length (mm)A-268
    Fit length (mm)C26
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D210-32
    Outside diameter (mm)B56
    Moment of inertia (10-3 kgm2)Jges.0,12
    Approximate weight (kg)0,25
    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
    Hub materialAluminium
    optional Steel
    30
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien60
    Rated torque (Nm)TKN60
    Overall length (mm)A-279
    Fit length (mm)C28
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D214-35
    Outside diameter (mm)B66
    Moment of inertia (10-3 kgm2)Jges.0,3
    Approximate weight (kg)0,4
    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
    Hub materialAluminium
    optional Steel
    60
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien80
    Rated torque (Nm)TKN80
    Overall length (mm)A-292
    Fit length (mm)C32,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D216-42
    Outside diameter (mm)B82
    Moment of inertia (10-3 kgm2)Jges.0,75
    Approximate weight (kg)0,7
    Torsional stiffness (10³ Nm/rad)CT80
    Axial ± (mm))max.2
    Lateral ± (mm)max.0,2
    Angular ± (degree)max.1
    Axial spring stiffness (N/mm)Ca44
    Lateral spring stiffness (N/mm)Cr590
    Fastening screw (ISO 4762)EM10
    Tightening torque of the fastening screw (Nm)E70
    Distance between centerlines (mm)F27
    Distance (mm)G11
    Hub materialAluminium
    optional Steel
    80
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien150
    Rated torque (Nm)TKN150
    Overall length (mm)A-292
    Fit length (mm)C32,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D219-42
    Outside diameter (mm)B82
    Moment of inertia (10-3 kgm2)Jges.1,8 | 0,8
    Approximate weight (kg)1,7 | 0,75
    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)E85
    Distance between centerlines (mm)F27
    Distance (mm)G11
    Hub materialSteel
    optional Aluminium
    150
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien300
    Rated torque (Nm)TKN300
    Overall length (mm)A-2109
    Fit length (mm)C41
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D224-60
    Outside diameter (mm)B110
    Moment of inertia (10-3 kgm2)Jges.7,5 | 3,1
    Approximate weight (kg)3,8 | 1,6
    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
    Hub materialSteel
    optional Aluminium
    300
    CAD
    BKL 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
    Hub material
    CAD Portal
    BKL Serien500
    Rated torque (Nm)TKN500
    Overall length (mm)A-2114
    Fit length (mm)C42,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D235-62
    Outside diameter (mm)B123
    Moment of inertia (10-3 kgm2)Jges.11,7 | 4,9
    Approximate weight (kg)4,9 | 2,1
    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)Cr1450
    Fastening screw (ISO 4762)EM16
    Tightening torque of the fastening screw (Nm)E200
    Distance between centerlines (mm)F41
    Distance (mm)G17
    Hub materialSteel
    optional Aluminium
    500
    CAD

    Properties

    • Design:
      • With a single ISO 4762 radial clamping screw per hub.
      • Self opening clamp system optional: Loosening the clamping screw applies force to the pin, which will force the clamp into the open position for easy mounting and dismounting.
    • Temperature range: -30° C to +100° C (-22° F to +212° F)
    • Backlash: Absolutely backlash-free due to frictional clamped connection.
    • Service life: These couplings have an infinite life and are maintenance-free if the technical ratings are not exceeded
    • Tolerance: On the hub/shaft connection 0.01 to 0.05 mm.
    • Material:
      • Bellows made of highly flexible high-grade
stainless steel.
      • Hub material see table
    • Speeds: Up to 10,000 rpm, in excess of 10,000 with
a finely balanced version.
    • Non-standard applications: Custom designs with varied tolerances, keyways, non-standard material,
bellows and ATEX designs are available upon request.
    • Properties of Bellows Coupling model BKL:
      • economically priced
      • low moment of inertia
      • easy to mount
    • Design: With a single radial clamping screw per hub ISO 4762.
    • Temperature range: -40° C to +200° C (-40° F to +392° F)
    • Backlash: Absolutely backlash-free.
    • Material:
      • Bellows are made of highly flexible high-grade stainless steel
      • Hubs are made of aluminium
    • Compensating of misalignment:
      • Lateral misalignment up to 0,2 mm.

      • Axial misalignment up to 1 mm.
      • Angular misalignment up to 2° degree.
    • Speeds: Up to 10,000 rpm, in excess of 10,000 rpm with balanced version.
    • Properties of Miniature Coupling model BKL:
      • backlash-free and torsionally rigid
      • compensates for 3-axis of misalignment
      • low cost


    Overview