MK2
Miniature Bellows Coupling with clamping hub

0.5 - 10 Nm

MK2 MINIATURE BELLOWS COUPLING WITH CLAMPING HUB

  • MK2
  • Specifications MK2

    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien5
    Rated torque (Nm)TKN0,5
    Overall lengthA-125 | 28 | 31
    Fit length (mm)C9
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/23-7
    Outside diameter (mm)B15
    Moment of inertia (gcm2)Jges.2,6 | 2,8 | 3
    Torsional stiffness (Nm/rad)CT280 | 210 | 170
    Fastening screw (ISO 4762)EM2
    Tightening torque of the fastening screw (Nm)E0,43
    Distance between centerlines (mm)F4,5
    Distance (mm)G3
    Approximate weight (g)9 | 9 | 9
    Axial (mm)max.0,4 | 0,5 | 0,6
    Lateral (mm)max.0,15 | 0,2 | 0,25
    Angular (degree)max.1 | 1,5 | 2
    5
    CAD
    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien10
    Rated torque (Nm)TKN1
    Overall lengthA-127 | 30 | 33
    Fit length (mm)C9
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/23-7
    Outside diameter (mm)B15
    Moment of inertia (gcm2)Jges.3 | 3,4 | 3,6
    Torsional stiffness (Nm/rad)CT510 | 380 | 320
    Fastening screw (ISO 4762)EM2
    Tightening torque of the fastening screw (Nm)E0,43
    Distance between centerlines (mm)F4,5
    Distance (mm)G3
    Approximate weight (g)9 | 10 | 11
    Axial (mm)max.0,4 | 0,5 | 0,6
    Lateral (mm)max.0,15 | 0,2 | 0,25
    Angular (degree)max.1 | 1,5 | 2
    10
    CAD
    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien15
    Rated torque (Nm)TKN1,5
    Overall lengthA-130 | 35
    Fit length (mm)C11
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/23-8
    Outside diameter (mm)B19
    Moment of inertia (gcm2)Jges.8,5 | 9,5
    Torsional stiffness (Nm/rad)CT750 | 700
    Fastening screw (ISO 4762)EM2,5
    Tightening torque of the fastening screw (Nm)E0,85
    Distance between centerlines (mm)F6
    Distance (mm)G3,5
    Approximate weight (g)22 | 24
    Axial (mm)max.0,5 | 0,7
    Lateral (mm)max.0,15 | 0,2
    Angular (degree)max.1,5 | 1,5
    15
    CAD
    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien20
    Rated torque (Nm)TKN2
    Overall lengthA-135 | 40 | 44
    Fit length (mm)C13
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/23-12,7
    Outside diameter (mm)B25
    Moment of inertia (gcm2)Jges.25 | 27 | 29
    Torsional stiffness (Nm/rad)CT1200 | 1300 | 1200
    Fastening screw (ISO 4762)EM3
    Tightening torque of the fastening screw (Nm)E2,3
    Distance between centerlines (mm)F8
    Distance (mm)G4
    Approximate weight (g)36 | 38 | 40
    Axial (mm)max.0,5 | 0,6 | 0,7
    Lateral (mm)max.0,15 | 0,2 | 0,25
    Angular (degree)max.1,5 | 1,5 | 2
    20
    CAD
    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien45
    Rated torque (Nm)TKN4,5
    Overall lengthA-146 | 54
    Fit length (mm)C16
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/25-16
    Outside diameter (mm)B32
    Moment of inertia (gcm2)Jges.100 | 108
    Torsional stiffness (Nm/rad)CT7000 | 5000
    Fastening screw (ISO 4762)EM4
    Tightening torque of the fastening screw (Nm)E4
    Distance between centerlines (mm)F10
    Distance (mm)G5
    Approximate weight (g)74 | 78
    Axial (mm)max.0,7 | 1
    Lateral (mm)max.0,2 | 0,25
    Angular (degree)max.1,5 | 2
    45
    CAD
    MK2 Series
    Rated torque (Nm)TKN
    Overall lengthA-1
    Fit length (mm)C
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/2
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Approximate weight (g)
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    CAD Portal
    MK2 Serien100
    Rated torque (Nm)TKN10
    Overall lengthA-150 | 60
    Fit length (mm)C16
    Inside diameter possible from Ø to Ø H7 (mm)
    D1/25-24
    Outside diameter (mm)B40
    Moment of inertia (gcm2)Jges.160 | 205
    Torsional stiffness (Nm/rad)CT9050 | 8800
    Fastening screw (ISO 4762)EM4
    Tightening torque of the fastening screw (Nm)E4,5
    Distance between centerlines (mm)F15
    Distance (mm)G5
    Approximate weight (g)120 | 130
    Axial (mm)max.1 | 1,2
    Lateral (mm)max.0,2 | 0,3
    Angular (degree)max.1,5 | 2
    100
    CAD

    Properties

    • Design:
      • standard: With a single radial clamping screw per hub ISO 4762
      • option (MKH): Both clamping hubs completely removable
    • Temperature range: -30°C to +110°C (-22° F to +230° F)
    • Tolerance: On the hub/shaft connection 0.01 to 0.05 mm.
    • Service life: These couplings have an infinite life, and are maintenance-free if the technical ratings are not exceeded.
    • Material:
      • bellows are made of highly flexible high-grade stainless steel
      • 
hubs from aluminium.
    • Speeds: Up to 10,000 rpm, in excess of 10,000 rpm available with balanced version.
    • Non-standard application: Custom designs with varied tolerances, keyways, non-standard material and bellows are available upon request.
    • Properties of Miniature Coupling model MK2:
      • backlash-free and torsionally rigid
      • compensates for 3-axis of misalignment
      • frictional connection utilizing clamping hubs
      • for high dynamic applications
      • low moment of inertia


    Overview