Elastomer Couplings EK

Please select a Product:
MODEL SERIES EK EKL and EK2 EKH EK6 EK7 EK1 EK4 EZ2 EZV ES2 ESL TX1

Backlash-free and compact Elastomer Couplings by R+W

Function: The equalizing element of an EK coupling is the elastomer insert. It transmits the torque without backlash and vibration. The elastomer insert defines the features of the entire coupling and/or of the entire drive system.

The coupling is backlash free due to pretensioning of the elastomer insert between the two coupling halves.The Servomax-Coupling compensates for lateral, angular and axial misalignment.

Type A
Shore hardness
98 Sh A		 Type B
Shore hardness
64 Sh D		 Type C
Shore hardness
80 Sh A		 Type D*
Shore hardness
92 Sh A

Elastomer Couplings: Specification of the Elastomer inserts

Type Shore hardness Color Material Relative damping
( ψ )		 Temperature range Properties
A 98 Sh A red TPU 0,4 - 0.5 -30°C to +100°C high damping
B 64 Sh D green TPU 0,3 - 0,45 -30°C to +120°C high Torsional stiffness
C 80 Sh A yellow TPU 0,3 - 0,4 -30°C to +100°C very high damping
 D* 92 Sh A black TPU 0,3 - 0,45 -10°C to +70°C electrically conductive*

* Due to the electrically conductiv properties of the insert electrostatically charge of the coupling is prevented. This eliminates sparks during normal operation ( Explosive areas). Technical datas available.

The values of the relative damping were determined at 10 Hz and +20˚C.

Elastomer Couplings - general technical data: static and dynamic torsional stiffness, max. Shaft misalignment

Model EK

Series

2

5

10

20

60

Type (Elastomer insert)

 

A

B

C

A

B

C

A

B

C

A

B

C

A

B

C

Static Torsional stiffness (Nm/rad)

CT

50

115

17

150

350

53

260

600

90

1140

2500

520

3290

9750

1400

Dynamic
Torsional stiffness (Nm/rad)

C Tdyn

100

230

35

300

700

106

541

1650

224

2540

4440

876

7940

11900

1350

Lateral (mm)

Max.
values

0,08

0,06

0,1

0,08

0,06

0,1

0,1

0,08

0,12

0,1

0,08

0,15

0,12

0,1

0,15

Angular (degree)

1

0,8

1,2

1

0,8

1,2

1

0,8

1,2

1

0,8

1,2

1

0,8

1,2

Axial (mm)

±1

±1

±1

±2

±2

Model EK

Series

150

300

450

800

Type (Elastomer insert)

 

A

B

C

A

B

C

A

B

C

A

B

C

Static Torsional stiffness (Nm/rad)

CT

4970

10600

1130

12400

18000

1280

15100

27000

4120

41300

66080

10320

Dynamic Torsional stiffness (Nm/rad)

C Tdyn

13400

29300

3590

23700

40400

6090

55400

81200

11600

82600

180150

28600

Lateral (mm)

Max.
values

0,15

0,12

0,2

0,18

0,14

0,25

0,2

0,18

0,25

0,25

0,2

0,3

Angular (degree)

1

0,8

1,2

1

0,8

1,2

1

0,8

1,2

1

0,8

1,2

Axial (mm)

±2

±2

±2

±2

Static Torsional stiffness at 50% TKN     Dynamic Torsional stiffness at TKN      1 Nm = 8,85 in lbs

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Elastomer Couplings and Spider Couplings made by R+W

Elastomer Couplings -Areas of applications:

  • in servo drives in:
    Machine tools
    Packaging machinery
    Plant automation
    Printing machinery
    Industrial robots
  • Measurement and positioning units
  • general mechanical engineering
  • Linking screw jacks
  • linear actuaters
  • encoders.

Properties of Elastomer Couplings:

  • vibration dampening
  • electrically insulating (standard)
  • backlash-free
  • press-fit design
  • lateral-, angular- and axial misalignment
    l
    lateral misalignment

    angular misalignment

    axial misalignment
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