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Flexible Couplings - zero backlash, EK2 series.

R+W

Features
Easy to mount
Highly concentric assembly
Vibration damping

Design
Two concentrically machined hubs with curved jaws and clamping screws, with calibrated preloaded insert

Material
Hubs: high strength aluminum
Elastomer: wear resistant thermanally stable TPU, available in 3 hardness levels

Advantage
Smooth running and reliable transmission with absorption of vibration and shock

Size 800 is available on special request.

Part Number

Configured Part Number is shown.

Product Specifications
Part Numbers

: 30; 45; 60

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Part Number
EK2/60/A/12/12
EK2/60/A/12/13
EK2/60/A/12/14
EK2/60/A/12/15
EK2/60/A/12/16
EK2/60/A/12/17
EK2/60/A/12/18
EK2/60/A/12/19
EK2/60/A/12/20
EK2/60/A/12/21
EK2/60/A/12/22
EK2/60/A/12/23
EK2/60/A/12/24
EK2/60/A/12/25
EK2/60/A/12/26
EK2/60/A/12/27
EK2/60/A/12/28
EK2/60/A/12/29
EK2/60/A/12/30
EK2/60/A/12/31
EK2/60/A/12/32
EK2/60/A/13/13
EK2/60/A/13/14
EK2/60/A/13/15
EK2/60/A/13/16
EK2/60/A/13/17
EK2/60/A/13/18
EK2/60/A/13/19
EK2/60/A/13/20
EK2/60/A/13/21
EK2/60/A/13/22
EK2/60/A/13/23
EK2/60/A/13/24
EK2/60/A/13/25
EK2/60/A/13/26
EK2/60/A/13/27
EK2/60/A/13/28
EK2/60/A/13/29
EK2/60/A/13/30
EK2/60/A/13/31
EK2/60/A/13/32
EK2/60/A/14/14
EK2/60/A/14/15
EK2/60/A/14/16
EK2/60/A/14/17
EK2/60/A/14/18
EK2/60/A/14/19
EK2/60/A/14/20
EK2/60/A/14/21
EK2/60/A/14/22
EK2/60/A/14/23
EK2/60/A/14/24
EK2/60/A/14/25
EK2/60/A/14/26
EK2/60/A/14/27
EK2/60/A/14/28
EK2/60/A/14/29
EK2/60/A/14/30
EK2/60/A/14/31
EK2/60/A/14/32

Minimum order quantity	Days to Ship	Allowable Torque Range (N•m)	For Shaft Size D1 (mm)	For Shaft Size D2 (mm)	Outer Dia. A (Ø)	Overall Length W (mm)	Max. Rotational Speed Range (r/min)	Allowable Torque (N•m)	Max. Rotational Speed (r/min)	Allowable Lateral Misalignment Range (mm)	Operating Temperature Range (℃)	Fit Length (mm) (mm)	Torsional Stiffness (N-m/rad) (N-m/rad)	Tightening Torque of the Fastening Screw (N-m) (N-m)	Size	Elastomer Insert
1 Piece(s)	21 Days	100~less than 500	12	12	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	13	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	14	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	15	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	16	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	17	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	18	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	19	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	20	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	21	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	22	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	23	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	24	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	25	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	26	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	27	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	28	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	29	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	30	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	31	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	12	32	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	13	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	14	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	15	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	16	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	17	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	18	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	19	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	20	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	21	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	22	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	23	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	24	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	25	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	26	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	27	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	28	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	29	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	30	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	31	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	13	32	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	14	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	15	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	16	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	17	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	18	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	19	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	20	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	21	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	22	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	23	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	24	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	25	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	26	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	27	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	28	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	29	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	30	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	21 Days	100~less than 500	14	31	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A
1 Piece(s)	8 Days	100~less than 500	14	32	56	78	10001~78000	120	11000	0.02~0.2	-30～100	30	3290	15	60	A - Shore 98A

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Basic Information

Type	Jaw Type	Application	Servo Motor / Stepping Motor	Feature	No Backlash
Body Material	Aluminum	Allowable Angular Misalignment(deg)	1	Allowable Lateral Misalignment(mm)	0.15
Buffer Part Material	Polyurethane	Allowable Axial Misalignment (±)(mm)	2	Moment of Inertia(kg･m²)	0.00026

Configure

1,610 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

For Shaft Size D1(mm)
8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60
Clear
For Shaft Size D2(mm)
8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60
Clear
Outer Dia. A(Ø)
42

56

66.5

82

102
Clear
Overall Length W(mm)
66

78

90

114

126
Clear
Max. Rotational Speed Range(r/min)
4001~10000

10001~78000
Clear
Allowable Torque(N•m)
12

34

35

42

85

120

150

170

190

320

400

650

810

1060

1350
Clear
Max. Rotational Speed(r/min)
8000

9000

10000

11000

12500
Clear
Allowable Lateral Misalignment Range(mm)
0.02~0.2

0.21~0.40
Clear
Fit Length (mm)(mm)
25

30

35

45

50
Clear
Torsional Stiffness (N-m/rad)(N-m/rad)
520

1140

1400

2000

2500

3290

4120

4970

9750

10600

12400

15100

18000

27000
Clear
Tightening Torque of the Fastening Screw (N-m)(N-m)
8

15

35

70

120
Clear
Size
20

60

150

300

450
Clear
Elastomer Insert
- B - Shore 64D
- C - Shore 80A
- A - Shore 98A
Clear
Allowable Torque Range(N•m)
10.01~20.00

20.01~50.00

50.01~100.00

100~less than 500

500~less than 1000

1000~less than 5000
Clear
CAD
- 3D
Clear

Days to Ship

All

5 Days or Less

8 Days or Less

21 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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How can we improve?

Flexible Couplings - zero backlash, EK2 series.

Basic Information

Configure

Specification/Dimensions

For Shaft Size D1(mm)

For Shaft Size D2(mm)

Outer Dia. A(Ø)

Overall Length W(mm)

Max. Rotational Speed Range(r/min)

Allowable Torque(N•m)

Max. Rotational Speed(r/min)

Allowable Lateral Misalignment Range(mm)

Fit Length (mm)(mm)

Torsional Stiffness (N-m/rad)(N-m/rad)

Tightening Torque of the Fastening Screw (N-m)(N-m)

Size

Elastomer Insert

Allowable Torque Range(N•m)

CAD