BK2
Metal Bellows Coupling with clamping hub

15 - 10,000 Nm

BK2 METAL BELLOWS COUPLING WITH CLAMPING HUB

  • BK2
  • Especificações BK2

    BK2 Série
    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
    BK2 Serien15
    Rated torque (Nm)TKN15
    Overall length (mm)A-259 | 66 | 99
    Fit length (mm)C22
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D28-28
    Outside diameter (mm)B49
    Moment of inertia (10-3 kgm2)Jges.0,06 | 0,07 | 0,08
    Approximate weight (kg)0,16
    Torsional stiffness (10³ Nm/rad)CT20 | 15 | 14
    Axial ± (mm)max.1 | 2 | 3
    Lateral ± (mm)max.0,15 | 0,2 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca25 | 15 |84
    Lateral spring stiffness (N/mm)Cr475 | 137 | 140
    Fastening screw (ISO 4762)EM5
    Tightening torque of the fastening screw (Nm)E8
    Distance between centerlines (mm)F17
    Distance (mm)G6,5
    Hub materialAlumínio
    de Aço opciona
    15
    CAD
    BK2 Série
    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
    BK2 Serien30
    Rated torque (Nm)TKN30
    Overall length (mm)A-269 | 77 | 113
    Fit length (mm)C27
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D210-30
    Outside diameter (mm)B55
    Moment of inertia (10-3 kgm2)Jges.0,12 | 0,13 | 0,14
    Approximate weight (kg)0,26
    Torsional stiffness (10³ Nm/rad)CT39 | 28 | 27
    Axial ± (mm)max.1 | 2 |3
    Lateral ± (mm)max.0,2 | 0,25 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca50 | 30 | 118
    Lateral spring stiffness (N/mm)Cr900 | 270 | 224
    Fastening screw (ISO 4762)EM6
    Tightening torque of the fastening screw (Nm)E15
    Distance between centerlines (mm)F19
    Distance (mm)G7,5
    Hub materialAlumínio
    de Aço opciona
    30
    CAD
    BK2 Série
    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
    BK2 Serien60
    Rated torque (Nm)TKN60
    Overall length (mm)A-283 | 93 |130
    Fit length (mm)C31
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D212-35
    Outside diameter (mm)B66
    Moment of inertia (10-3 kgm2)Jges.0,32 | 0,35 | 0,4
    Approximate weight (kg)0,48
    Torsional stiffness (10³ Nm/rad)CT76 | 55 | 54
    Axial ± (mm)max.1,5 | 2 | 3
    Lateral ± (mm)max.0,2 | 0,25 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca72 | 48 | 165
    Lateral spring stiffness (N/mm)Cr1200 | 420 | 337
    Fastening screw (ISO 4762)EM8
    Tightening torque of the fastening screw (Nm)E40
    Distance between centerlines (mm)F23
    Distance (mm)G9,5
    Hub materialAlumínio
    de Aço opciona
    60
    CAD
    BK2 Série
    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
    BK2 Serien80
    Rated torque (Nm)TKN80
    Overall length (mm)A-294 | 106 | 143
    Fit length (mm)C36
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D214-42
    Outside diameter (mm)B81
    Moment of inertia (10-3 kgm2)Jges.0,8 | 0,85 | 0,9
    Approximate weight (kg)0,8
    Torsional stiffness (10³ Nm/rad)CT129 | 85 | 84
    Axial ± (mm)max.2 | 3 | 4
    Lateral ± (mm)max.0,2 | 0,25 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca48 | 32 | 144
    Lateral spring stiffness (N/mm)Cr920 | 290 | 401
    Fastening screw (ISO 4762)EM10
    Tightening torque of the fastening screw (Nm)E50
    Distance between centerlines (mm)F27
    Distance (mm)G11
    Hub materialAlumínio
    de Aço opciona
    80
    CAD
    BK2 Série
    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
    BK2 Serien150
    Rated torque (Nm)TKN150
    Overall length (mm)A-295 | 107 | 144
    Fit length (mm)C36
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D219-42
    Outside diameter (mm)B81
    Moment of inertia (10-3 kgm2)Jges.1,9 | 2 | 2,1
    Approximate weight (kg)1,85
    Torsional stiffness (10³ Nm/rad)CT175 | 110 | 97
    Axial ± (mm)max.2 | 3 | 4
    Lateral ± (mm)max.0,2 | 0,25 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca82 | 52 | 130
    Lateral spring stiffness (N/mm)Cr1550 | 435 | 500
    Fastening screw (ISO 4762)EM10
    Tightening torque of the fastening screw (Nm)E70
    Distance between centerlines (mm)F27
    Distance (mm)G11
    Hub materialStahl
    optional Aluminium
    150
    CAD
    BK2 Série
    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
    BK2 Serien200
    Rated torque (Nm)TKN200
    Overall length (mm)A-2105 | 117 | 163
    Fit length (mm)C41
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D222-45
    Outside diameter (mm)B90
    Moment of inertia (10-3 kgm2)Jges.3,2 | 3,4 | 3,6
    Approximate weight (kg)2,65
    Torsional stiffness (10³ Nm/rad)CT191 | 140 | 135
    Axial ± (mm)max.2 | 3 | 4
    Lateral ± (mm)max.0,25 | 0,3 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca90 | 60 | 280
    Lateral spring stiffness (N/mm)Cr2040 | 610 | 750
    Fastening screw (ISO 4762)EM12
    Tightening torque of the fastening screw (Nm)E120
    Distance between centerlines (mm)F31
    Distance (mm)G12,5
    Hub materialStahl
    optional Aluminium
    200
    CAD
    BK2 Série
    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
    BK2 Serien300
    Rated torque (Nm)TKN300
    Overall length (mm)A-2111 | 125 | 200
    Fit length (mm)C43
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D224-60
    Outside diameter (mm)B110
    Moment of inertia (10-3 kgm2)Jges.7,6 | 7,9 | 8,3
    Approximate weight (kg)4
    Torsional stiffness (10³ Nm/rad)CT450 | 350 | 340
    Axial ± (mm)max.2,5 | 3,5 | 4,5
    Lateral ± (mm)max.0,25 | 0,3 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca105 | 71 | 605
    Lateral spring stiffness (N/mm)Cr3750 | 1050 | 1200
    Fastening screw (ISO 4762)EM12
    Tightening torque of the fastening screw (Nm)E130
    Distance between centerlines (mm)F39
    Distance (mm)G13
    Hub materialStahl
    optional Aluminium
    300
    CAD
    BK2 Série
    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
    BK2 Serien500
    Rated torque (Nm)TKN500
    Overall length (mm)A-2133 | 146 | 169
    Fit length (mm)C51
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D235-60
    Outside diameter (mm)B124
    Moment of inertia (10-3 kgm2)Jges.14,3 | 14,6 | 14,8
    Approximate weight (kg)6,3
    Torsional stiffness (10³ Nm/rad)CT510 | 500 | 400
    Axial ± (mm)max.2,5 | 3,5 | 4,5
    Lateral ± (mm)max.0,3 | 0,35 | 1
    Angular ± (degree)max.1|1,5|2
    Axial spring stiffness (N/mm)Ca70 | 48 | 85
    Lateral spring stiffness (N/mm)Cr2500 | 840 | 614
    Fastening screw (ISO 4762)EM16
    Tightening torque of the fastening screw (Nm)E200
    Distance between centerlines (mm)F41
    Distance (mm)G16,5
    Hub materialStahl
    optional Aluminium
    500
    CAD
    BK2 Série
    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
    BK2 Serien800
    Rated torque (Nm)TKN800
    Overall length (mm)A-2140 | 179
    Fit length (mm)C45
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D240-75
    Outside diameter (mm)B134
    Moment of inertia (10-3 kgm2)Jges.16,2 | 17
    Approximate weight (kg)5,7
    Torsional stiffness (10³ Nm/rad)CT780 | 711
    Axial ± (mm)max.3,5 | 4,5
    Lateral ± (mm)max.0,35 | 1
    Angular ± (degree)max.1,5 | 2
    Axial spring stiffness (N/mm)Ca100 | 285
    Lateral spring stiffness (N/mm)Cr2000 | 1490
    Fastening screw (ISO 4762)E2x M16*
    Tightening torque of the fastening screw (Nm)E250
    Distance between centerlines (mm)F2x48
    Distance (mm)G18
    Hub materialAço
    800
    CAD
    BK2 Série
    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
    BK2 Serien1500
    Rated torque (Nm)TKN1500
    Overall length (mm)A-2166 | 230
    Fit length (mm)C55
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D250-80
    Outside diameter (mm)B157
    Moment of inertia (10-3 kgm2)Jges.43 | 45
    Approximate weight (kg)11,5
    Torsional stiffness (10³ Nm/rad)CT1304 | 1180
    Axial ± (mm)max.3,5 | 4,5
    Lateral ± (mm)max.0,35 | 1
    Angular ± (degree)max.1,5 | 2
    Axial spring stiffness (N/mm)Ca320 | 440
    Lateral spring stiffness (N/mm)Cr3600 | 1700
    Fastening screw (ISO 4762)E2x M20*
    Tightening torque of the fastening screw (Nm)E470
    Distance between centerlines (mm)F2x55
    Distance (mm)G22,5
    Hub materialAço
    1500
    CAD
    BK2 Série
    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
    BK2 Serien4000
    Rated torque (Nm)TKN4000
    Overall length (mm)A-2225
    Fit length (mm)C85
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D250-90
    Outside diameter (mm)B200
    Moment of inertia (10-3 kgm2)Jges.165
    Approximate weight (kg)28,8
    Torsional stiffness (10³ Nm/rad)CT3400
    Axial ± (mm)max.3,5
    Lateral ± (mm)max.0,4
    Angular ± (degree)max.1,5
    Axial spring stiffness (N/mm)Ca565
    Lateral spring stiffness (N/mm)Cr6070
    Fastening screw (ISO 4762)E2x M24*
    Tightening torque of the fastening screw (Nm)E1200
    Distance between centerlines (mm)F2x65
    Distance (mm)G28
    Hub materialAço
    4000
    CAD
    BK2 Série
    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
    BK2 Serien6000
    Rated torque (Nm)TKN6000
    Overall length (mm)A-2252
    Fit length (mm)C107
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D260-140
    Outside diameter (mm)B253
    Moment of inertia (10-3 kgm2)Jges.495
    Approximate weight (kg)49,4
    Torsional stiffness (10³ Nm/rad)CT5700
    Axial ± (mm)max.3
    Lateral ± (mm)max.0,4
    Angular ± (degree)max.1,5
    Axial spring stiffness (N/mm)Ca1030
    Lateral spring stiffness (N/mm)Cr19200
    Fastening screw (ISO 4762)E2x M24*
    Tightening torque of the fastening screw (Nm)E1200
    Distance between centerlines (mm)F2x90
    Distance (mm)G35
    Hub materialAço
    6000
    CAD
    BK2 Série
    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
    BK2 Serien10000
    Rated torque (Nm)TKN10000
    Overall length (mm)A-2288
    Fit length (mm)C129
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/D270-180
    Outside diameter (mm)B303
    Moment of inertia (10-3 kgm2)Jges.1214
    Approximate weight (kg)80,9
    Torsional stiffness (10³ Nm/rad)CT10950
    Axial ± (mm)max.3
    Lateral ± (mm)max.0,4
    Angular ± (degree)max.1,5
    Axial spring stiffness (N/mm)Ca985
    Lateral spring stiffness (N/mm)Cr21800
    Fastening screw (ISO 4762)E2x M30*
    Tightening torque of the fastening screw (Nm)E2400
    Distance between centerlines (mm)F2x117
    Distance (mm)G42
    Hub materialAço
    10000
    CAD

    Propriedade

    • Design:
      • With a single radial clamping screw per hub ISO 4762.
      • Any imbalance of the clamping hubs is compensated for by balancing bores located on the inside of the hub.
    • Temperature range: -30° C bis +100° C (-22° F to +212° F)
    • Backlash: Absolutely backlash-free due to frictional clamp connection.
    • Service life: These couplings 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 below.
    • Brief overloads: Acceptable up to 1.5 times the value specified.
    • Speeds: Up to 10,000 rpm, in excess of 10,000 available with a finely balanced version.
    • 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 BK2:
      • easy to mount
      • suited for space restricted installations
      • low moment of inertia


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