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Flexible Shaft Couplings（Allowable Torque Range：500~less than 1000）

Type

With Slit
Disc Type
Oldham Type
Jaw Type
Bellows Type
Others

9 items

: 30; 45; 60

Flexible Couplings - zero backlash, EKL series.

R+W

Features
Short overall length
Easy mounting
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.

CAD ：

3D

Days to Ship: 5 Days or more
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.

CAD ：

3D

Days to Ship: 5 Days or more
Flexible Couplings - Star Flex, ALS-R series.

Miki Pulley

Flexible spider type couplings, model Star flex series ALS-R. It has a polyurethane elastomer used in the coupling separator. It has excellent anti vibration and shock absorption.

Volume Discount
Days to Ship: 16 Days or more
Flexible Couplings - MJB series.

NBK

Flexible spider spacer type couplings, series MJB. Excellent for high torque transmission. Excellent flexibility. Absorbs torsional vibration as well as eccentricity. It has electrical resistance.

Volume Discount
Days to Ship: 11 Days or more
Flexible Couplings - zero backlash, EK2 series, (Inches).

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.

CAD ：

3D

Days to Ship: 5 Days or more
Flexible Couplings - zero backlash, EKL series, (Inches).

R+W

Features
Short overall length
Easy mounting
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.

CAD ：

3D

Days to Ship: 5 Days or more
Flexible Couplings - Servo Flex, SFS series.

Miki Pulley

Flexible Servo Flex couplings SFS series. Torsional stiffness is extremely high, super position control is possible. Since all power transmission is transmitted by friction coupling, there is no backlash.

Volume Discount

CAD ：

2D
Days to Ship: 19 Days or more
Flexible Couplings - Precision axially adjustable spring type, LCD-B series.

Sakai Manufacturing

Precision axially adjustable spring type flexible couplings, series LCD-B. Features low inertia. Unique leaf spring type lamination with excellent accuracy and stiffness. High torque rotational transmission. Simultaneously absorbs declination and axial displacement.

Volume Discount

CAD ：

2D / 3D
Days to Ship: 25 Days or more
Flexible Couplings - Precision axially adjustable spring type, series LCS-B.

Sakai Manufacturing

Precision axially adjustable spring type flexible couplings with low inertia and high stiffness specifications.

Volume Discount

CAD ：

2D / 3D
Days to Ship: 25 Days or more

Days to Ship:	5 Days or more

Days to Ship:	5 Days or more

Days to Ship:	16 Days or more

Days to Ship:	11 Days or more

Days to Ship:	5 Days or more

Days to Ship:	5 Days or more

Days to Ship:	19 Days or more

Days to Ship:	25 Days or more

Days to Ship:	25 Days or more


Brand
Product Series
CAD
Days to Ship
Type
Allowable Misalignment
Application
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)
Feature
Body Material
Category
Allowable Torque(N•m)
Max. Rotational Speed(r/min)
Allowable Angular Misalignment(deg)
Allowable Lateral Misalignment Range(mm)
Allowable Lateral Misalignment(mm)
Buffer Part Material
Disc Part Material
Bellows Part Material
For Shaft Size D1(inch)
For Shaft Size D2(inch)


Brand	R+W	R+W	Miki Pulley	NBK	R+W	R+W	Miki Pulley	Sakai Manufacturing	Sakai Manufacturing
Product Series	Flexible Couplings - zero backlash, EKL series.	Flexible Couplings - zero backlash, EK2 series.	Flexible Couplings - Star Flex, ALS-R series.	Flexible Couplings - MJB series.	Flexible Couplings - zero backlash, EK2 series, (Inches).	Flexible Couplings - zero backlash, EKL series, (Inches).	Flexible Couplings - Servo Flex, SFS series.	Flexible Couplings - Precision axially adjustable spring type, LCD-B series.	Flexible Couplings - Precision axially adjustable spring type, series LCS-B.
CAD	3D	3D			3D	3D	2D	2D / 3D	2D / 3D
Days to Ship	5 Days or more	5 Days or more	16 Days or more	11 Days or more	5 Days or more	5 Days or more	19 Days or more	25 Days or more	25 Days or more
Type	Jaw Type	Jaw Type	Jaw Type	Jaw Type	Jaw Type	Jaw Type	Disc Type	Disc Type	Disc Type
Allowable Misalignment	-	-	None / Angular / Eccentricity / Axial	-	-	-	Angular / Eccentricity / Axial	Angular / Eccentricity / Axial	Angular / Eccentricity / Axial
Application	Servo Motor / Stepping Motor	Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor / Encoder	Standard / Servo Motor / Stepping Motor	Servo Motor / Stepping Motor	Servo Motor / Stepping Motor	Servo Motor	Standard / Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor
Allowable Torque Range(N•m)	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000	500~less than 1000
For Shaft Size D1(mm)	20 ～ 45	20 ～ 45	38 ～ 60	20 ～ 50	-	-	35 ～ 40	45 ～ 60	45 ～ 60
For Shaft Size D2(mm)	20 ～ 45	20 ～ 45	38 ～ 60	20 ～ 50	-	-	35 ～ 55	45 ～ 60	45 ～ 60
Outer Dia. A(Ø)	82	82	105	80 ～ 95	82	82	144	155	155
Overall Length W(mm)	86	114	140	114 ～ 126	114	86	102 ～ 170.6	154	114
Max. Rotational Speed Range(r/min)	4001~10000	4001~10000	4001~10000	4001~10000 ～ 10001~78000	4001~10000	4001~10000	2001~4000 ～ 4001~10000	4001~10000	4001~10000
Feature	No Backlash	No Backlash	High Accuracy ～ Vibration Insulation	High Torque ～ Vibration Insulation	No Backlash	No Backlash	High Accuracy ～ Unfinished Shaft Bore	High Torque ～ Low Moment of Inertia	High Torque ～ Low Moment of Inertia
Body Material	Aluminum	Aluminum	Aluminum	Steel	Aluminum	Aluminum	Steel	Steel	Steel
Category	-	-	Coupling Main Body	Coupling Main Body	-	-	Coupling Main Body	Coupling Main Body	Coupling Main Body
Allowable Torque(N•m)	650 ～ 810	320 ～ 810	525	530 ～ 900	650 ～ 810	650 ～ 810	580 ～ 800	800	800
Max. Rotational Speed(r/min)	9000	9000	4500	10000 ～ 11000	9000	9000	3800 ～ 9500	10000	10000
Allowable Angular Misalignment(deg)	0.8 ～ 1	1	1	1	0.8 ～ 1	0.8 ～ 1	1 ～ 2	1	1
Allowable Lateral Misalignment Range(mm)	0.02~0.2	0.02~0.2	0.02~0.2	0.02~0.2	0.02~0.2	0.02~0.2	0.41~1.0	0.41~1.0	0.02~0.2
Allowable Lateral Misalignment(mm)	0.14 ～ 0.18	0.15	0.15	0.08 ～ 0.15	0.14 ～ 0.18	0.14 ～ 0.18	0.7 ～ 0.9	0.7	0.02
Buffer Part Material	Polyurethane	Polyurethane	Polyurethane	Polyurethane	Polyurethane	Polyurethane	-	-	-
Disc Part Material	-	-	-	-	-	-	Stainless Steel	Stainless Steel	Stainless Steel
Bellows Part Material	-	-	-	-	-	-	-	-	-
For Shaft Size D1(inch)	-	-	-	-	1 ～ 7/8	1 ～ 7/8	-	-	-
For Shaft Size D2(inch)	-	-	-	-	1 ～ 7/8	1 ～ 7/8	-	-	-

Configure

Specification/Dimensions

Allowable Misalignment
- None
- Angular
- Eccentricity
- Axial
Larger Image

Clear

Application
- Standard
- Servo Motor
- Stepping Motor
- Encoder
Clear

Allowable Torque Range(N•m)
0.05~1.00

1.01~3.00

3.01~5.00

5.01~10.00

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

Metric / Inch
- metric
Clear

For Shaft Size D1(mm)
0-Pilot Bore

1

1.5

2

2.5

3

3.17

3.2

4

4.5

4.76

5

6

6.35

7

7.93

8

9

9.5

9.52

9.525

9.53

10

11

12

12.7

13

14

15

15.875

16

17

18

19

20

20.5

21

22

23

24

25

25.4

26

27

28

29

30

30.5

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

61

62
Drawing

Clear

For Shaft Size D2(mm)
0-Pilot Bore

1

1.5

2

2.4

2.5

3

3.17

3.2

4

4.5

4.76

5

6

6.35

7

7.93

8

9

9.5

9.52

9.525

9.53

10

11

12

12.7

13

14

15

15.875

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

61

62
Drawing

Clear

Outer Dia. A(Ø)
6

6.4

8

9

9.5

10

12

12.7

13

13.5

14

14.5

15

16

16.1

16.6

16.8

17

18

19

19.1

20

21

22

24

25

25.4

26

27

27.3

28

29

30

31.7

32

33.3

34

34.4

35

36

38

39

40

41.3

42

44

44.5

45

46

48

49

50

53.6

54

54.5

55

56

57

58

60

63

64

65

66

66.5

67

68

70

75

79

80

81

82

85

87

88

90

94

95

100

102

104

105

110

118

123

125

126

144

155
Drawing

Clear

Overall Length W(mm)
5.1

7.3

8.4

9

9.4

9.6

10

10.2

10.5

11.2

11.8

12.4

12.7

13.5

14

14.2

14.6

14.9

15

15.5

15.7

15.8

15.9

16

16.2

16.5

16.6

16.7

17.4

17.8

18

18.1

18.4

18.5

18.8

19

19.35

19.4

19.8

20

20.2

20.4

20.5

21

21.2

21.4

21.5

21.6

22

22.1

22.5

23

23.1

23.15

23.2

23.3

23.4

23.5

23.6

24

24.4

24.5

25

25.5

25.6

25.7

25.9

26

26.2

26.5

26.6

27

27.2

27.3

27.4

28

28.2

28.4

29

29.8

30

30.2

30.4

31

31.2

31.6

32

32.2

32.3

32.5

32.7

32.8

33

33.3

33.8

34

34.4

35

36

36.5

36.8

37.2

37.4

37.8

38

38.2

38.6

39

39.2

39.4

39.5

40

40.5

41

41.8

42

43.2

43.4

43.6

44

44.7

44.8

45

45.2

46

46.6

47

47.6

48

48.4

49.2

49.4

50

50.2

50.6

50.8

51

51.2

52

53

53.4

53.6

54

54.1

54.4

54.5

54.6

55

55.5

56

56.5

56.6

57

58

58.2

58.6

59

59.7

59.8

60

60.4

61

61.2

62

63.4

63.6

63.8

64.8

65

65.6

66

66.6

67

67.5

68

68.3

68.6

68.7

68.8

69

69.6

69.8

70

70.5

70.6

71

71.2

72

73

73.3

74

74.4

74.8

75

75.6

77

77.6

77.8

78

78.8

79

79.5

79.8

80

80.8

81

82

83

83.6

84

84.7

85.5

85.6

86

88

89.3

89.6

90

90.8

91

92

93

93.6

94

95

95.6

96

97

97.2

98

98.6

99

99.6

100

101.6

102

104.4

105.8

106

107

107.6

109

110

112.8

113

114

115.6

119.6

120

120.8

123.6

125

126

127

129.6

130

137.6

140

143

144

150

150.6

154

154.6

160

170.6
Drawing

Clear

Max. Rotational Speed Range(r/min)
1001~2000

2001~4000

4001~10000

10001~78000

78001~
Clear

Feature
Clean Environment

Heat Resistant

High Accuracy

High Durability

High Torque

High Torsional Rigidity

Low Moment of Inertia

No Backlash

Small

Unfinished Shaft Bore

Vacuum Environment

Vibration Insulation
Clear

Body Material
Alloy

Aluminum

Resin

Stainless Steel

Steel
Clear

Category
- Coupling Main Body
- Maintenace Parts
Clear

Allowable Torque(N•m)
0.05

0.06

0.08

0.1

0.12

0.147

0.15

0.196

0.2

0.21

0.25

0.3

0.31

0.343

0.35

0.39

0.392

0.4

0.42

0.5

0.54

0.59

0.6

0.65

0.7

0.7845

0.8

0.84

0.9

0.99

1

1.1

1.19

1.2

1.275

1.3

1.39

1.4

1.5

1.6

1.7

1.79

1.8

1.961

1.99

2

2.1

2.19

2.2

2.3

2.4

2.452

2.5

2.59

2.6

2.79

2.8

2.99

3

3.2

3.3

3.4

3.432

3.5

3.6

3.79

3.8

3.923

3.99

4

4.2

4.4

4.5

4.6

4.7

4.8

4.89

4.9

5

5.4

5.5

5.6

6

6.3

6.4

6.6

6.8

6.865

7

7.4

7.49

7.5

8

8.4

8.99

9

9.6

9.8

9.807

9.99

10

10.99

11

11.2

12

12.5

12.6

13.1

13.5

14

15

15.4

16

16.99

17

17.652

17.99

18

20

22

23

24

25

26

27

28

29

29.42

30

31

32

34

35

36

37.5

38

39.227

40

41

42

45

46

48

49.033

50

51

52

54

56

60

61

67

68

70

71

72

75

79

80

85

89

90

92

95

96

98.067

100

105

108

110

114

120

121

130

132

140

150

151

160

170

176.52

180

190

194

198

200

215.746

220

226

250

260

265

280

300

310

320

325

352

380

400

433

450

500

525

530

567

580

650

800

810

900

945

1060

1120

1350
Please refer to manufacturer's tech data. The calculaton method like safety factor for allowable torque differs depending on the manufacturers.
Clear

Max. Rotational Speed(r/min)
10,000

900

2000

3000

3500

3800

4000

4400

4500

4800

5000

5100

5200

5500

5800

5900

6000

6100

6200

6500

6800

7000

7400

7600

7900

8000

8700

9000

9500

9800

10000

11000

11900

12000

12500

13000

14000

15000

15900

16000

17000

18000

18200

19000

20000

21000

21700

22000

23000

23800

24000

25000

26000

31000

32000

33000

34100

37000

39000

40000

42000

43000

44100

45000

52000

53000

57000

60000

63000

65000

67000

78000

100000
Clear

Allowable Angular Misalignment(deg)
0.056

0.08

0.5

0.56

0.6

0.7

0.8

1

1.2

1.4

1.5

2

2.5

3

3.5
Clear

Allowable Lateral Misalignment Range(mm)
Less than 0.02

0.02~0.2

0.21~0.40

0.41~1.0

1.1~3.0

3.1~5.0

5.1~100
Clear

Allowable Lateral Misalignment(mm)
0.004(inch)

0.005(inch)

0.006(inch)

0.008(inch)

0.01

0.012(inch)

0.016(inch)

0.02

0.03

0.05

0.06

0.07

0.08

0.09

0.1

0.11

0.12

0.13

0.14

0.15

0.18

0.2

0.22

0.23

0.24

0.25

0.26

0.27

0.28

0.3

0.31

0.32

0.33

0.34

0.35

0.38

0.4

0.45

0.47

0.5

0.52

0.55

0.58

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

2

2.4

2.5

3

3.5

3.8

4

4.5

5

6

7
Clear

Buffer Part Material
- Carbon Reinforced Resin
- Polyacetal
- Polyurethane
- Nylon
- Vespel
- PEEK
- Aluminum Bronze
- Others
- Fluororubber
Clear

Disc Part Material
- Stainless Steel
- Polyimide
- Carbon Fiber
Clear

Bellows Part Material
- Stainless Steel
- Phosphor Bronze
Clear

For Shaft Size D1(inch)
1

1 1/2

1 1/4

1 1/8

1/2

1 2/3

1/3

1 3/4

1 3/7

1 3/8

1/4

1/5

1 5/8

1 7/8

1/8

2

2 1/4

2 1/8

2 3/8

3/4

3/7

3/8

3/16

5/8

5/16

7/8

7/16
Clear

For Shaft Size D2(inch)
1

1 1/2

1 1/4

1 1/8

1/2

1 2/3

1/3

1 3/4

1 3/7

1 3/8

1/4

1/5

1 5/8

1 7/8

1/8

2

2 1/4

2 1/8

2 3/8

3/4

3/7

3/8

3/16

5/8

5/16

7/8

7/16
Clear

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Days to Ship

All

Same day

5 Days or Less

6 Days or Less

8 Days or Less

9 Days or Less

10 Days or Less

11 Days or Less

12 Days or Less

13 Days or Less

14 Days or Less
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