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Discontinued Products

Flexible Shaft Coupling Accessories - EK Series Elastomer Inserts

Flexible Shaft Coupling Accessories - EK Series Elastomer Inserts

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R+W

R+W

The equalizing element of the EK coupling is the elastomer insert. It transmits torque without backlash or vibration. The elastomer insert defines the characteristics of the entire drive system.

Backlash is eliminated by the press fit of the elastomer into the hubs. Through variation of the Shore hardness of the elastomer insert, the coupling system can be optimized for the ideal torsional characteristics.

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R+W Elastomer Couplings

Information

Axes of Misalignment

     
Lateral Angular Axial
     

Function

The equalizing element of the EK coupling is the elastomer insert.
It transmits torque without backlash or vibration.The elastomer
insert defines the characteristics of the entire drive system.		 Backlash is eliminated by the press fit of the elastomer into the hubs.
Through variation of the Shore hardness of the elastomer insert,
the coupling system can be optimized for the ideal torsional characteristics.

Sizes 2 - 800


Shore hardness 98 A         Shore hardness 64 Sh D          Shore hardness 80 Sh A          Shore hardness 65 Sh D          Shore hardness 64 Sh D

Sizes 2500 - 9500

The coupling includes 5x elastomer segments

    Shore hardness 98 Sh A                   Shore hardness 64 Sh D                   Shore hardness 65 Sh D                  Shore hardness 64 Sh D

Specification

Description of the Elastomer Inserts

TypeShore hardnessColorMaterialRelative
damping (Ψ)		Temperature rangeFeatures
A98 Sh AredTPU   0.4 - 0.5   -30°C to +100°Chigh damping
B64 Sh DgreenTPU 0.3 - 0.45 -30°C to +120°Chigh torsional stiffness
C80 Sh AyellowTPU 0.3 - 0.4 -30°C to +100°Cvery high damping
D*65 Sh DblackTPU 0.3 - 0.45 -10°C to +70°Celectrically conductive
E64 Sh DbeigeHytrel 0.3 - 0.45 -50°C to +150°Ctemperature resistant
*The electrical conductivity of the elastomer material is to prevent the electrostatic charging of the elastomer coupling system, to reduce the risk of sparking in operation. ATEX technical data is available upon request.
The values of the relative damping were determined at 10 Hz and +20˚ C.

Sizes EK

SIZE25102060150
Type (Elastomer insert) ABCABCABCABCABCABC
Static torsional
stiffness
(Nm/rad)		CT50115171503505326060090114025005203290975014004970106002000
Dynamic torsional
stiffness		(Nm/rad)CTdyn10023035300700106541165022425404440876794011900207213400293003590
Lateral(mm)Max.
values		0.080.060.20.080.060.20.10.080.220.10.080.250.120.10.250.150.120.3
Angular(Degree)10.81.210.81.210.81.210.81.210.81.210.81.2
Axial(mm)±1±1±1±1.5±1.5±1.8
 
SIZE*300450800250045009500
Type (Elastomer insert)  ABCABCABCABABAB
Static torsional
stiffness
(Nm/rad)		CT124001800030001510027000412041300660801032087600109000167000372000590000670000
Dynamic
torsional stiffness
(Nm/rad)		CTdyn23700404006090554008120011600826001801502860017500021600033700074300011800001340000
Lateral(mm)Max. values0.180.140.350.20.180.350.250.20.40.50.30.50.30.60.4
Angular(Degree)10.81.210.81.210.81.21.511.511.51
Axial(mm)±2±2±2±3±3±4
Static torsional stiffness at 50% TKN                                                                Dynamic torsional stiffness at TKN
* Note: The technical values for elastomer inserts D and E correspond to the values for B, due to the identical Shore hardness.
Data to be displayed
30
45
60
  1. 1
Part Number
EK/0002/A
EK/0002/B
EK/0002/C
EK/0002/D
EK/0002/E
EK/0005/A
EK/0005/B
EK/0005/C
EK/0005/D
EK/0005/E
EK/0010/A
EK/0010/B
EK/0010/C
EK/0010/D
EK/0010/E
EK/0020/A
EK/0020/B
EK/0020/C
EK/0020/D
EK/0020/E
EK/0060/A
EK/0060/B
EK/0060/C
EK/0060/D
EK/0060/E
EK/0150/A
EK/0150/B
EK/0150/C
EK/0150/D
EK/0150/E
EK/0300/A
EK/0300/B
EK/0300/C
EK/0300/D
EK/0300/E
EK/0450/A
EK/0450/B
EK/0450/C
EK/0450/D
EK/0450/E
EK/0800/A
EK/0800/B
EK/0800/C
EK/0800/D
EK/0800/E
EK/2500/A
EK/2500/B
EK/2500/D
EK/2500/E
EK/4500/A
EK/4500/B
EK/4500/D
EK/4500/E
EK/9500/A
EK/9500/B
EK/9500/D
EK/9500/E
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
Allowable Torque Range
(N•m) 		Max. Rotational Speed Range
(r/min) 		Feature Allowable Torque
(Nm) 		Max. Rotational Speed
(r/min) 		Allowable Lateral Misalignment Range
(mm) 		Allowable Lateral Misalignment
(mm) 		Allowable Angular Misalignment
(deg) 		Operating Temperature Range
(°C) 		Allowable Axial Clearance (±)
(mm) 		Torsional Stiffness
(N-m/rad) 		Size Elastomer Insert

3.01 €

1 12 Days 3.01 to 5.0010,001 to 78,000Vibration Insulation4600000.02 to 0.20.081-30～1001502A - Shore 98A

3.20 €

1 12 Days 3.01 to 5.0010,001 to 78,000High Torsional Rigidity5670000.02 to 0.20.060.8-30～12011152B - Shore 64D

3.20 €

1 12 Days 0.05 to 1.0010,001 to 78,000Vibration Insulation1450000.02 to 0.20.21.2-30～1001172C - Shore 80A

6.01 €

1 12 Days 1.01 to 3.0010,001 to 78,000-2.4150000.02 to 0.20.060.8-10～7011152D - Shore 65D

13.17 €

1 12 Days 3.01 to 5.0010,001 to 78,000Heat Resistant5670000.02 to 0.20.060.8-50～15011152E - Shore 64D

3.69 €

1 12 Days 3.01 to 5.0010,001 to 78,000Vibration Insulation4570000.02 to 0.20.081-30～10011505A - Shore 98A

3.87 €

1 12 Days 20.01 to 50.0010,001 to 78,000High Torsional Rigidity24650000.02 to 0.20.060.8-30～12013505B - Shore 64D

3.87 €

1 12 Days 0.05 to 1.0010,001 to 78,000Vibration Insulation1430000.02 to 0.20.21.2-30～1001535C - Shore 80A

6.59 €

1 12 Days 10.01 to 20.0010,001 to 78,000-12150000.02 to 0.20.060.8-10～7013505D - Shore 65D

14.44 €

1 12 Days 20.01 to 50.0010,001 to 78,000Heat Resistant24650000.02 to 0.20.060.8-50～15013505E - Shore 64D

8.63 €

1 12 Days 0.05 to 1.0010,001 to 78,000Vibration Insulation25530000.02 to 0.20.11-30～100126010A - Shore 98A

11.64 €

1 12 Days 20.01 to 50.0010,001 to 78,000High Torsional Rigidity32630000.02 to 0.20.080.8-30～120160010B - Shore 64D

11.64 €

1 12 Days 5.01 to 10.0010,001 to 78,000Vibration Insulation6400000.21 to 0.400.221.2-30～10019010C - Shore 80A

17.25 €

1 12 Days 20.01 to 50.0010,001 to 78,000-22441000.02 to 0.20.060.56-10～70160010D - Shore 65D

23.46 €

1 12 Days 20.01 to 50.0010,001 to 78,000Heat Resistant32630000.02 to 0.20.080.8-50～150160010E - Shore 64D

9.30 €

1 12 Days 20.01 to 50.0010,001 to 78,000Vibration Insulation34450000.02 to 0.20.11-30～1002114020A - Shore 98A

12.31 €

1 12 Days 20.01 to 50.0010,001 to 78,000High Torsional Rigidity42600000.02 to 0.20.080.8-30～1202250020B - Shore 64D

12.31 €

1 12 Days 10.01 to 20.0010,001 to 78,000Vibration Insulation12400000.21 to 0.400.251.2-30～100252020C - Shore 80A

22.10 €

1 12 Days 20.01 to 50.0010,001 to 78,000-29420000.02 to 0.20.060.56-10～702250020D - Shore 65D

29.65 €

1 12 Days 20.01 to 50.0010,001 to 78,000Heat Resistant42600000.02 to 0.20.080.8-50～1502250020E - Shore 64D

9.88 €

1 12 Days 100 to Less Than 50010,001 to 78,000Vibration Insulation120310000.02 to 0.20.121-30～1002329060A - Shore 98A

12.70 €

1 12 Days 100 to Less Than 50010,001 to 78,000High Torsional Rigidity150310000.02 to 0.20.10.08-30～1202975060B - Shore 64D

12.70 €

1 12 Days 20.01 to 50.0010,001 to 78,000Vibration Insulation35250000.21 to 0.400.251.2-30～1002140060C - Shore 80A

23.07 €

1 12 Days 100 to Less Than 50010,001 to 78,000-105217000.02 to 0.20.070.056-10～702975060D - Shore 65D

37.61 €

1 12 Days 100 to Less Than 50010,001 to 78,000Heat Resistant150310000.02 to 0.20.10.08-50～1502975060E - Shore 64D

11.06 €

1 12 Days 100 to Less Than 50010,001 to 78,000Vibration Insulation320220000.02 to 0.20.151-30～10024970150A - Shore 98A

13.86 €

1 12 Days 100 to Less Than 50010,001 to 78,000High Torsional Rigidity400260000.02 to 0.20.120.8-30～120210600150B - Shore 64D

13.86 €

1 12 Days 50.01 to 100.0010,001 to 78,000Vibration Insulation85180000.21 to 0.400.31.2-30～10022000150C - Shore 80A

25.20 €

1 12 Days 100 to Less Than 50010,001 to 78,000-280182000.02 to 0.20.080.056-10～70210600150D - Shore 65D

40.71 €

1 12 Days 100 to Less Than 50010,001 to 78,000Heat Resistant400260000.02 to 0.20.120.8-50～150210600150E - Shore 64D

12.50 €

1 12 Days 500 to Less Than 1,00010,001 to 78,000Vibration Insulation650220000.02 to 0.20.181-30～100212400300A - Shore 98A

18.32 €

1 12 Days 500 to Less Than 1,00010,001 to 78,000High Torsional Rigidity810260000.02 to 0.20.140.8-30～120218000300B - Shore 64D

18.32 €

1 12 Days 100 to Less Than 50010,001 to 78,000Vibration Insulation170160000.21 to 0.400.351.2-30～10023000300C - Shore 80A

28.89 €

1 12 Days 500 to Less Than 1,00010,001 to 78,000-567182000.02 to 0.20.10.056-10～70218000300D - Shore 65D

51.17 €

1 12 Days 500 to Less Than 1,00010,001 to 78,000Heat Resistant810260000.02 to 0.20.140.8-50～150218000300E - Shore 64D

21.52 €

1 12 Days 1000 to Less Than 500010,001 to 78,000Vibration Insulation1060160000.02 to 0.20.21-30～100215100450A - Shore 98A

30.72 €

1 12 Days 1000 to Less Than 500010,001 to 78,000High Torsional Rigidity1350170000.02 to 0.20.180.8-30～120227000450B - Shore 64D

30.72 €

1 12 Days 100 to Less Than 50010,001 to 78,000Vibration Insulation190120000.21 to 0.400.351.2-30～10024120450C - Shore 80A

37.40 €

1 12 Days 500 to Less Than 1,00010,001 to 78,000-945119000.02 to 0.20.130.056-10～70227000450D - Shore 65D

69.21 €

1 12 Days 1000 to Less Than 500010,001 to 78,000Heat Resistant1350170000.02 to 0.20.180.8-50～150227000450E - Shore 64D

39.74 €

1 12 Days 500 to Less Than 1,0002001 to 4,000Vibration Insulation95040000.21 to 0.400.251-30～100241300800A - Shore 98A

46.23 €

1 12 Days 1000 to Less Than 50002001 to 4,000High Torsional Rigidity110040000.02 to 0.20.20.8-30～120266080800B - Shore 64D

46.23 €

1 12 Days 100 to Less Than 5002001 to 4,000Vibration Insulation24040000.21 to 0.400.41.2-30～100210320800C - Shore 80A

56.99 €

1 12 Days 1000 to Less Than 50002001 to 4,000-110040000.02 to 0.20.20.8-10～70266080800D - Shore 65D

81.40 €

1 12 Days 1000 to Less Than 50002001 to 4,000Heat Resistant110040000.02 to 0.20.20.8-50～150266080800E - Shore 64D

16.09 €

5 12 Days 1000 to Less Than 50002001 to 4,000Vibration Insulation195035000.41 to 1.00.51.5-30～1003876002500A - Shore 98A

16.09 €

5 12 Days 1000 to Less Than 50002001 to 4,000High Torsional Rigidity245035000.21 to 0.400.31-30～12031090002500B - Shore 64D

25.97 €

5 12 Days 1000 to Less Than 50002001 to 4,000-245035000.21 to 0.400.31-10～7031090002500D - Shore 65D

92.65 €

5 12 Days 1000 to Less Than 50002001 to 4,000Heat Resistant245035000.21 to 0.400.31-50～15031090002500E - Shore 64D

24.53 €

5 12 Days 5,000 to Less Than 10,0002001 to 4,000Vibration Insulation500030000.41 to 1.00.51.5-30～10031670004500A - Shore 98A

24.53 €

5 12 Days 5,000 to Less Than 10,0002001 to 4,000High Torsional Rigidity620030000.21 to 0.400.31-30～12033720004500B - Shore 64D

45.35 €

5 12 Days 5,000 to Less Than 10,0002001 to 4,000-620030000.21 to 0.400.31-10～7033720004500D - Shore 65D

125.02 €

5 12 Days 5,000 to Less Than 10,0002001 to 4,000Heat Resistant620030000.21 to 0.400.31-50～15033720004500E - Shore 64D

35.17 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000Vibration Insulation1000020000.41 to 1.00.61.5-30～10045900009500A - Shore 98A

35.17 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000High Torsional Rigidity1250020000.21 to 0.400.41-30～12046700009500B - Shore 64D

57.18 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000-1250020000.21 to 0.400.41-10～7046700009500D - Shore 65D

138.00 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000Heat Resistant1250020000.21 to 0.400.41-50～15046700009500E - Shore 64D

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  1. 1

Basic information

Type Jaw Type Allowable Misalignment Angular Misalignment / Eccentricity / Axial Misalignment Body Material Resin
Shaft D1 Keyway Without Keyway Shaft D2 Keyway Without Keyway

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Basic Attributes

  • Allowable Torque Range(N•m)

    • 0.05 to 1.00
    • 1.01 to 3.00
    • 3.01 to 5.00
    • 5.01 to 10.00
    • 10.01 to 20.00
    • 20.01 to 50.00
    • 50.01 to 100.00
    • 100 to Less Than 500
    • 500 to Less Than 1,000
    • 1000 to Less Than 5000
    • 5,000 to Less Than 10,000
    • 10,000 to Less than 20,000

    Clear

  • Max. Rotational Speed Range(r/min)

    • 1,001 to 2,000
    • 2001 to 4,000
    • 10,001 to 78,000

    Clear

  • Feature

    • High Torsional Rigidity
    • Vibration Insulation
    • Heat Resistant

    Clear

  • Allowable Torque(Nm)

    • 1
    • 2.4
    • 4
    • 5
    • 6
    • 12
    • 22
    • 24
    • 25
    • 29
    • 32
    • 34
    • 35
    • 42
    • 85
    • 105
    • 120
    • 150
    • 170
    • 190
    • 240
    • 280
    • 320
    • 400
    • 567
    • 650
    • 810
    • 945
    • 950
    • 1060
    • 1100
    • 1350
    • 1950
    • 2450
    • 5000
    • 6200
    • 10000
    • 12500

    Clear

  • Max. Rotational Speed(r/min)

    • 2000
    • 3000
    • 3500
    • 4000
    • 11900
    • 12000
    • 15000
    • 16000
    • 17000
    • 18000
    • 18200
    • 21700
    • 22000
    • 25000
    • 26000
    • 31000
    • 40000
    • 42000
    • 43000
    • 44100
    • 45000
    • 53000
    • 57000
    • 60000
    • 63000
    • 65000
    • 67000

    Clear

  • Allowable Lateral Misalignment Range(mm)

    • 0.02 to 0.2
    • 0.21 to 0.40
    • 0.41 to 1.0

    Clear

  • Allowable Lateral Misalignment(mm)

    • 0.06
    • 0.07
    • 0.08
    • 0.1
    • 0.12
    • 0.13
    • 0.14
    • 0.15
    • 0.18
    • 0.2
    • 0.22
    • 0.25
    • 0.3
    • 0.35
    • 0.4
    • 0.5
    • 0.6

    Clear

  • Allowable Angular Misalignment(deg)

    • 0.056
    • 0.08
    • 0.56
    • 0.8
    • 1
    • 1.2
    • 1.5

    Clear

  • Torsional Stiffness(N-m/rad)

    • 17
    • 50
    • 53
    • 90
    • 115
    • 150
    • 260
    • 350
    • 520
    • 600
    • 1140
    • 1400
    • 2000
    • 2500
    • 3000
    • 3290
    • 4120
    • 4970
    • 9750
    • 10320
    • 10600
    • 12400
    • 15100
    • 18000
    • 27000
    • 41300
    • 66080
    • 87600
    • 109000
    • 167000
    • 372000
    • 590000
    • 670000

    Clear

  • Size

    • 2
    • 5
    • 10
    • 20
    • 60
    • 150
    • 300
    • 450
    • 800
    • 2500
    • 4500
    • 9500

    Clear

  • Elastomer Insert

    • B - Shore 64D
    • E - Shore 64D
    • D - Shore 65D
    • C - Shore 80A
    • A - Shore 98A

    Clear

  • Type

    • A
    • B
    • C
    • D
    • E

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    • 12 Days or Less

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