MK5
Miniature Bellows Coupling with clamping hub and press-fit connection

0.5 - 10 Nm

MK5 MINIATURE COUPLING WITH CLAMPING HUB AND PRESS-FIT CONNECTION

Specifications MK5

MK5 series 5 15 20 45 100
Rated torque (Nm) TKN 0.5 1.5 2.0 4.5 10
Overall length (inserted)(mm) A
273033
3439
374346
4957
5565
Outside diameter (mm) B 15 19 25 32 40
Fit length (mm) C1 9 11 13 16 16
Fit length (mm) C2 12 14 16 20 21.5
Inside diameter possible
from Ø to Ø H7 (mm)
D1/2
3-6.35 3-8 3-12.7 5-16 5-20
Inside diameter possible
from Ø to Ø H7 (inch)
D1/2
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
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
axial (mm) max.
0.40.50.6
0.50.7
0.50.60.7
0.71
11.2
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:
    • with a single radial clamping screw per hub ISO 4762
    • backlash-free, blind mate press-fit connection
  • 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 made of highly flexible high-grade stainless steel
    • the clamping hubs and tapered female segment on the bellows face are aluminium
    • tapered segment on the hub face: glass-fiber reinforced plastic deposited onto an aluminium hub.
  • Speeds:
    • up to 10,000 rpm
    • over 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 MK5:
    • absolutely backlash-free and torsionally rigid
    • compensates for 3-axis of misalignment
    • easy mounting and dismounting
    • electrically insulated
    • no wear
    • low moment of inertia

Overview