MK3
Miniature Bellows Coupling with expanding shaft

0.5 - 10 Nm

MK3 MINIATURE BELLOWS COUPLING WITH EXPANDING SHAFT

  • MK3
  • Specifications MK3

    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien5
    Rated torque (Nm)TKN0,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D13-7
    Outside diameter (mm)B15
    Moment of inertia (gcm2)Jges.2,6 | 2,8 | 3,0
    Torsional stiffness (Nm/rad)CT280 | 210 | 170
    Fastening screw (ISO 4762)EM2
    Fastening screw (ISO 4762)IM3
    Tightening torque of the fastening screw (Nm)E0,43
    Distance between centerlines (mm)F4,5
    Distance (mm)G3
    Mounting length (mm)C19
    Fit length (mm)C210
    Shaft diameter from Ø to Ø h7 (mm)D28-10
    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
    Overall length (mm)A-120 | 23 | 26
    5
    CAD
    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien10
    Rated torque (Nm)TKN1
    Inside diameter possible from Ø to Ø H7 (mm)
    D13-7
    Outside diameter (mm)B15
    Moment of inertia (gcm2)Jges.3,0 | 3,4 | 3,6
    Torsional stiffness (Nm/rad)CT510 | 380 | 320
    Fastening screw (ISO 4762)EM2
    Fastening screw (ISO 4762)IM3
    Tightening torque of the fastening screw (Nm)E0,43
    Distance between centerlines (mm)F4,5
    Distance (mm)G3
    Mounting length (mm)C19
    Fit length (mm)C210
    Shaft diameter from Ø to Ø h7 (mm)D28-10
    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
    Overall length (mm)A-122 | 25 | 28
    10
    CAD
    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien15
    Rated torque (Nm)TKN1,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D14-8
    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
    Fastening screw (ISO 4762)IM4
    Tightening torque of the fastening screw (Nm)E0,85
    Distance between centerlines (mm)F6
    Distance (mm)G3,5
    Mounting length (mm)C111
    Fit length (mm)C212
    Shaft diameter from Ø to Ø h7 (mm)D210-14
    Axial (mm)max.0,5 | 0,7
    Lateral (mm)max.0,15 | 0,2
    Angular (degree)max.1,5 | 1,5
    Overall length (mm)A-124 | 30
    15
    CAD
    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien20
    Rated torque (Nm)TKN2
    Inside diameter possible from Ø to Ø H7 (mm)
    D14-12,7
    Outside diameter (mm)B25
    Moment of inertia (gcm2)Jges.25 | 27 | 29
    Torsional stiffness (Nm/rad)CT1200 | 1300 | 1200
    Fastening screw (ISO 4762)EM3
    Fastening screw (ISO 4762)IM4
    Tightening torque of the fastening screw (Nm)E2,3
    Distance between centerlines (mm)F8
    Distance (mm)G4
    Mounting length (mm)C113
    Fit length (mm)C212
    Shaft diameter from Ø to Ø h7 (mm)D28-16
    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
    Overall length (mm)A-127 | 33 | 36
    20
    CAD
    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien45
    Rated torque (Nm)TKN4,5
    Inside diameter possible from Ø to Ø H7 (mm)
    D15-16
    Outside diameter (mm)B32
    Moment of inertia (gcm2)Jges.100 | 108
    Torsional stiffness (Nm/rad)CT7000 | 5000
    Fastening screw (ISO 4762)EM4
    Fastening screw (ISO 4762)IM5
    Tightening torque of the fastening screw (Nm)E4
    Distance between centerlines (mm)F10
    Distance (mm)G5
    Mounting length (mm)C116
    Fit length (mm)C215
    Shaft diameter from Ø to Ø h7 (mm)D214-20
    Axial (mm)max.0,7 | 1
    Lateral (mm)max.0,2 | 0,25
    Angular (degree)max.1,5 | 2
    Overall length (mm)A-136 | 44
    45
    CAD
    MK3 Series
    Rated torque (Nm)TKN
    Inside diameter possible from Ø to Ø H7 (mm)D1
    Outside diameter (mm)B
    Moment of inertia (gcm2)Jges.
    Torsional stiffness (Nm/rad)CT
    Fastening screw (ISO 4762)E
    Fastening screw (ISO 4762)I
    Tightening torque of the fastening screw (Nm)E
    Distance between centerlines (mm)F
    Distance (mm)G
    Mounting length (mm)C1
    Fit length (mm)C2
    Shaft diameter from Ø to Ø h7 (mm)D2
    Axial (mm)max.
    Lateral (mm)max.
    Angular (degree)max.
    Overall length (mm)A-1
    CAD Portal
    MK3 Serien100
    Rated torque (Nm)TKN10
    Inside diameter possible from Ø to Ø H7 (mm)
    D16-24
    Outside diameter (mm)B40
    Moment of inertia (gcm2)Jges.160 | 205
    Torsional stiffness (Nm/rad)CT9050 | 8800
    Fastening screw (ISO 4762)EM4
    Fastening screw (ISO 4762)IM6
    Tightening torque of the fastening screw (Nm)E4,5
    Distance between centerlines (mm)F15
    Distance (mm)G5
    Mounting length (mm)C116
    Fit length (mm)C220
    Shaft diameter from Ø to Ø h7 (mm)D216-24
    Axial (mm)max.1 | 1,2
    Lateral (mm)max.0,2 | 0,3
    Angular (degree)max.1,5 | 2
    Overall length (mm)A-141 | 51
    100
    CAD

    Properties

    • Design:
      • on one side with a single radial clamping screw ISO 4762
      • on one side an expanding shaft with tapered clamping element.
    • 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
      • clamping hub aluminium
      • expanding hub and cone (steel)
    • 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 MK3:
      • backlash-free and torsionally rigid
      • compensates for 3-axis of misalignment
      • easy mounting
      • compact design, conserves space while saving cost
      • low moment of inertia


    Overview