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Current location: Home Product R+W R + W elastomer couplings EK7
  • R + W elastomer couplings EK7
  • R + W elastomer couplings EK7
R + W elastomer couplings EK7

With conical expansion shaft

Specification: 2-2150nm

Suitable for hollow shaft installation

The conical expansion shaft can be clamped axially

Short length after installation

DetailsParameterVideo

Structure: it is composed of two coupling sleeves with high concentricity.

One side: iso4762 with clamping collar and side screw

Other side: expansion mandrel with inner cone and screw iso4762. The recommended hole diameter tolerance for expansion mandrel is H7. Three different structures can be selected for the elastic ring.

Temperature range: depends on the quincunx elastic ring selected.

Torsional rigidity: quincunx elastic rings with different shore hardness are provided for the optimization of transmission system.

Fit clearance: shaft sleeve connection 0.01 - 0.05 mm.

Material Science:

Clamping collar: high strength aluminum from series to 450 and steel from Series 800

Inner cone + expansion mandrel: Steel

Elastic ring: made of precision molded, extremely wear-resistant and heat-resistant plastic material

Speed: refer to the table for the standard. It can reach 4000 rpm or 22000 RPM according to different series. When the speed exceeds 4000 rpm, the claw coupling must use fine dynamic balance (please specify).

Technical parameters:

Rated torque: 2 - 2.150 NM

Up to 22000 rpm

Ek7 elastic coupling product features:

Collar with axially mounted expansion mandrel

Very good clamping force

Very good concentricity

Structural simplification

Easy to install

Axially mounted shaft head end

Zero backlash claw coupling

Electrical insulation


SIZE 5 10 20 60 150 300 450 800
Rated torque 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
Overall length 22 28 40 46 51 68 76 94
Inside diameter range 4-12.7 5-16 8-25 12-32 19-36 20-45 28-60 35-80
Outside diameter range 10-16 13-25 14-30 23-38 26-42 38-60 42-70 42-80
Moment of inertia 0.002 0.003 0.01 0.04 0.08 0.3 0.66 8
Moment of inertia 0.002
0.01 0.04 0.1 0.2 1 2.6 9
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