BKC
Metal Bellows Coupling economy class compact version with clamping hub

15 - 500 Nm

BKC METAL BELLOWS COUPLING ECONOMY CLASS COMPACT VERSION WITH CLAMPING HUB

BKC

Specifications BKC

BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien15
Rated torque (Nm)TKN15
Overall length (mm)A-248
Fit length (mm)C16,5
Inside diameter possible from Ø to Ø H7 (mm)
D1/D28-28
Outside diameter (mm)B49
Moment of inertia (10-3 kgm2)Jges.0,05
Approximate weight (kg)0,13
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 4762EM5
Tightening torque of the fastening screw (Nm)E8
Distance between centerlines (mm)F17,5
Distance (mm)G6,5
Hub materialAluminium
Speed max. with G = 2.5 balancing (min-1)80000
15
CAD
BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien30
Rated torque (Nm)TKN30
Overall length (mm)A-258
Fit length (mm)C21
Inside diameter possible from Ø to Ø H7 (mm)
D1/D212-32
Outside diameter (mm)B56
Moment of inertia (10-3 kgm2)Jges.0,1
Approximate weight (kg)0,21
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 4762EM6
Tightening torque of the fastening screw (Nm)E15
Distance between centerlines (mm)F20
Distance (mm)G7,5
Hub materialAluminium
Speed max. with G = 2.5 balancing (min-1)70000
30
CAD
BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien60
Rated torque (Nm)TKN60
Overall length (mm)A-267
Fit length (mm)C23
Inside diameter possible from Ø to Ø H7 (mm)
D1/D214-35
Outside diameter (mm)B66
Moment of inertia (10-3 kgm2)Jges.0,26
Approximate weight (kg)0,37
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 4762EM8
Tightening torque of the fastening screw (Nm)E40
Distance between centerlines (mm)F23
Distance (mm)G9,5
Hub materialAluminium
Speed max. with G = 2.5 balancing (min-1)60000
60
CAD
BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien150
Rated torque (Nm)TKN150
Overall length (mm)A-278
Fit length (mm)C27,5
Inside diameter possible from Ø to Ø H7 (mm)
D1/D219-42
Outside diameter (mm)B82
Moment of inertia (10-3 kgm2)Jges.0,65
Approximate weight (kg)0,72
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 4762EM10
Tightening torque of the fastening screw (Nm)E75
Distance between centerlines (mm)F27
Distance (mm)G11
Hub materialAluminium
Speed max. with G = 2.5 balancing (min-1)50000
150
CAD
BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien300
Rated torque (Nm)TKN300
Overall length (mm)A-294
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.6,3
Approximate weight (kg)3,26
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 4762EM12
Tightening torque of the fastening screw (Nm)E120
Distance between centerlines (mm)F39
Distance (mm)G13
Hub materialSteel
Speed max. with G = 2.5 balancing (min-1)40000
300
CAD
BKC 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 4762E
Tightening torque of the fastening screw (Nm)E
Distance between centerlines (mm)F
Distance (mm)G
Hub material
Speed max. with G = 2.5 balancing (min-1)
CAD Portal
BKC Serien500
Rated torque (Nm)TKN500
Overall length (mm)A-2100
Fit length (mm)C34
Inside diameter possible from Ø to Ø H7 (mm)
D1/D232-75
Outside diameter (mm)B123
Moment of inertia (10-3 kgm2)Jges.9
Approximate weight (kg)3,52
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 4762EM12
Tightening torque of the fastening screw (Nm)E125
Distance between centerlines (mm)F45
Distance (mm)G13
Hub materialSteel
Speed max. with G = 2.5 balancing (min-1)30000
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:
    • Standard up to 10,000
    • Option 1: In excess of 10,000 rpm with a finely balanced version

    • Option 2: in excess of 30,000 rpm, with balancing grade G = 2.5 (see table)
  • Non-standard application: Custom designs with varied tolerances, keyways, non-standard material, bellows and ATEX designs are available upon request.
  • Properties of Bellows Coupling model BKC:
    • for high speeds
    • easy to mount
    • suited for space restricted installations
    • low moment of inertia


Overview