EK1

Elastomer Spider Coupling with keyway connection

  • Design:
    • two coupling hubs are concentrically machined with curved jaws.

    • bore tolerance H7 + keyway + set screw per DIN 916 or optional pilot bore (DV).
  • Temperature range: The temperature range depends on the Elastomer insert.
  • Tolerance: Overall clearance between shaft and hub 0.01 to 0.05 mm.
  • Material:
    • coupling hub: up to series 450 high strength aluminium, series 800 and up steel

    • elastomer insert: precision molded, wear resistant, and thermally stable polymer
  • Speeds: See table below *Please contact R+W
                  ISO 2.5 balance grade available
  • Properties of Elastomer Coupling model EK1:
    • economical design
    • concentrically machined
    • vibration damping
    • electrically isolating
    • press fit design
    • low backlash, due to keyway connection

EK1 ELASTOMER SPIDER COUPLING WITH KEYWAY CONNECTION

Specifications EK1

EK1 series   2 5 10 20 60 150 300 450 800
Type (Elastomer insert)
A B C
A B C
A B C
A B C
A B C
A B C
A B C
A B C
A B C
Rated torque (Nm) TKN
2 2.4 0.5
9 12 2
12.5 16 4
17 21 6
60 75 20
160 200 42
325 405 84
530 660 95
950 1100 240
Max. torque (Nm) TKmax
4 4.8 1
18 24 4
25 32 6
34 42 12
120 150 35
320 400 85
650 810 170
1060 1350 190
1900 2150 400
Overall length (mm) A 20 34 35 66 78 90 114 126 162
Outside diameter (mm) B/B1 15 25 32 42 56 66.5 82 102 136.5
Mounting length (mm) C 6.5 12 12 25 30 35 45 50 65
Inside diameter (pilot bored) (mm) DV 3 4 6 7 9 14 16 22 29
Inside diameter range H7 (mm) D1/2 3-9 6-15 6-18 8-25 12-32 19-38 20-45 28-60 32-80
Inside diameter range H7 (inch) D1/2 0,125"-
0,313"
0,250"-
0,437"
0,250"-
0,625"
0,375"-
0,875"
0,500"-
1,250"
0,750"-
1,375"
0,875"-
1,750"
1,125"-
2,250"
1,375"-
3,125"
Inside diameter of elastomer (mm) DE 6.2 10.2 14.2 19.2 26.2 29.2 36.2 46.2 60.5
Set screws (DIN 916) E see table (depending on the bore diameter) **
Distance (mm) G 3 5 6 9 11 12 15 17 30
Possible shortening length (mm) H 4 6 6 19 22 26 32 37 43
Moment of inertia per Hub
(10-3 kgm2)
J1/J2 0.0001 0.001 0.003 0.02 0.06 0.1 0.4 1.1 12
Approx. weight (kg)   0.008 0.03 0.08 0.15 0.35 0.6 1.1 1.7 11
Speed standard (min-1)   15,000 15,000 13,000 12,500 11,000 10,000 9,000 8,000 4,000
*Speed balanced (103min-1)  
60 67 45
57 65 43
53 63 40
45 50 35
31 31 25
22 26 18
22 26 16
16 17 12
13 13 8
CAD Portal   2 5 10 20 60 150 300 450 800
2D/3D Data  

Ordering Example EK1

Ordering Example: EK1

Properties

  • Design:

    • two coupling hubs are concentrically machined with curved jaws.

    • bore tolerance H7 + keyway + set screw per DIN 916 or optional pilot bore (DV).

  • Temperature range: The temperature range depends on the Elastomer insert.
  • Tolerance: Overall clearance between shaft and hub 0.01 to 0.05 mm.
  • Material:

    • coupling hub: up to series 450 high strength aluminium, series 800 and up steel

    • elastomer insert: precision molded, wear resistant, and thermally stable polymer

  • Speeds: See table below *Please contact R+W
                  ISO 2.5 balance grade available
  • Properties of Elastomer Coupling model EK1:

    • economical design
    • concentrically machined
    • vibration damping
    • electrically isolating
    • press fit design
    • low backlash, due to keyway connection

Elastomer insert

For more Information, please click here.

Sizing and Selection

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Installation instruction

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ATEX

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Download

EK1

Contact

R+W America

1120 Tower Lane

Bensenville, IL 60106

USA

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