MK6
Miniature Bellows Coupling with clamp hub and expanding shaft from 0.5-10 Nm

0.5 - 10 Nm

MK6 MINIATURE BELLOWS COUPLING WITH CLAMP HUB AND EXPANDING SHAFT FROM 0,5-10 Nm

Specifications MK6

MK6 series 5 15 20 45 100
Rated torque (Nm) TKN 0.5 1.5 2.0 4.5 10
Overall length (inserted) (mm) A
212427
2732
283438
3846
4555
Outside diameter (mm) B 15 19 25 32 40
Shaft length (mm) C1 10 12 12 15 20
Fit length (mm) C2 12 14 16 20 21.5
Standard shaft Ø f7 (mm) D1 8-10 10-14 10-16 14-20 16-24
Inside diameter possible from
Ø to Ø H7 (mm)
D2
3-6.35 3-8 3-12.7 5-16 5-20
Inside diameter possible from
Ø to Ø H7 (inch)
D2
0,125"-
0,250"
0,125"-
0,313"
0,125"-
0,500"
0,250"-
0,625"
0,250"-
0,750"
Fastening screw ISO 4762 E M2 M2.5 M3 M4 M4
Tightening torque of the
fastening screws (Nm)
E
0.43 0.85 2.3 4 4.5
Distance between centerlines (mm) F 4.5 6 8 10 15
Distance (mm) G 3 3.5 4 5 5
Approximate pretensioning (mm) H 0.4 0.5 0.5 0.7 1
Fastening screw ISO 4762 I M3 M4 M4 M5 M6
Tightening torque of the
fastening screws (Nm)
I
1.5 3 4 6.5 11
Axial recovery force at maximum
pretensioning (N)
532
43
343
1510
2530
Moment of inertia (gcm2) Jges
3.03.23.5
9.010
283033
110120
220230
Torsional stiffness (Nm/rad) CT
280210170
750700
120013001200
70005000
90508800
lateral (mm) max.
0.150.20.25
0.150.2
0.150.20.25
0.20.25
0.20.3
angular (degrees)max.
11.52
1.5
1.51.52
1.52
1.52
CAD Portal 5 15 20 45 100
2D/3D Data 

Properties

  • Design:
    • on one side an expanding shaft with tapered clamping element
    • on one side a clamping hub
    • backlash-free, blind mate press-fit connection (glass-fiber reinforced plastic)
  • Temperature range: -30° 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 made of highly flexible high-grade stainless steel
    • clamping hub aluminium
    • expanding hub and cone (steel)
  • Speeds:
    • up to 10,000 rpm
    • over 10,000 rpm available with balanced version.
  • Properties of Miniature Coupling model MK6:
    • blacklash-free and torsionally rigid
    • compensates for 3-axis of misalignment
    • easy mounting and dismounting
    • electrically insulated
    • self-adjusting
    • no wear
    • low moment of inertia

Overview