EK1
Elastomer Spider Coupling with keyway connection

0.5 - 25,000

EK1 ELASTOMER SPIDER COUPLING WITH KEYWAY CONNECTION

Specifications EK1

EK1 series 2 5 10 20 60 150 300 450 800
Type (Elastomer insert)
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
Rated torque (Nm)TKN
22.40.5
9122
12.5164
17216
607520
16020042
32540584
53066095
9501100240
Max. torque (Nm)TKmax
44.81
18244
25326
344212
12015035
32040085
650810170
10601350190
19002150400
Overall length (mm)A20 34 35 66 78 90 114 126 162
Outside diameter (mm)B/B115 25 32 42 56 66.5 82 102 136.5
Mounting length (mm)C6.5 12 12 25 30 35 45 50 65
Inside diameter (pilot bored) (mm)DV3 4 6 7 9 14 16 22 29
Inside diameter range H7 (mm)D1/23-9 6-15 6-18 8-25 12-32 19-38 20-45 28-60 32-80
Inside diameter range H7 (inch)D1/20,125"-
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)DE6.2 10.2 14.2 19.2 26.2 29.2 36.2 46.2 60.5
Set screws (DIN 916)Esee table (depending on the bore diameter) **
Distance (mm)G3 5 6 9 11 12 15 17 30
Possible shortening length (mm)H4 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) 
606745
576543
536340
455035
313125
222618
222616
161712
13138
CAD Portal 2 5 10 20 60 150 300 450 800
2D/3D Data 

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