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Flexible Shaft Couplings（Body Material：Plastic）

Couplings serve a crucial role in transmission system by connecting two shafts and facilitating the transmission of torque between them. These devices are essential in various applications where precise and reliable power transmission is required. When selecting couplings, it is crucial to consider factors such as Shaft Bore Diameter, Overall Length , Materials (e.g., Stainless Steel, Steel, Aluminum, Plastic and etc.), Features(e.g., Clean Environment, Heat Resistant , High Torque and so on). These considerations are vital for ensuring the production of high-quality products. We highly recommend reputable brands like MISUMI, ADVANCED, COUP-LINE, as well as cost-effective options from MISUMI ECONOMY.
Take advantage of the convenience of FREE SHIPPING and NO MINIMUM ORDER on couplings. If you have any doubts or require assistance in choosing the right product, our experts are readily available to provide.

Type

Slit
Disc
Oldham
Jaw
Bellows
Others
Vibration Damping Rubber Type

8 items

: 30; 45; 60

Plastic Coupling GJ

ADVANCED

· Compared to UJ, the slit part is longer and the allowable misalignment amount when using alone is improved
· Single item easily absorbs curves and misalignment
· Smooth rotary transmission in a compact design
· For rotation transmission parts that require electric insulation

Standard Price:	SGD 11.24-
Days to Ship:	4 Day(s) or more

Plastic Coupling - Set Screw, Short

MISUMI

[Features]·This is an inexpensive coupling (short resin type) dedicated for low torque.

CAD ：

2D / 3D

Days to Ship: 5 Day(s) or more

Days to Ship:	5 Day(s) or more

K-7 coupling MD series

KAYSEVEN

· K-7 coupling MD series - Oldham Type.
· MD series Oldham Couplings structure Consists of three parts :2 hubs and 1 torque disc.
· Application: Robot, Various pumps, Blower, Printing machine, NC-MC machine tool and Conveyor.
· As K-7 standard specifications, 12 MD types from MD-35 to MD-160M are available.
· MD series Body material is aluminum alloy.
· Torque disc material: Polyacetal resin.
· Torque discs are made of resin and do not need to be lubricated.
· Operating environment Temperature Range: -40 to 85 °C
· Assembly and replacement of intermediate torque transmission members are easy.

Standard Price:	SGD 7.35-
Days to Ship:	6 Day(s) or more

Plastic Coupling UJ

ADVANCED

· Miniature coupling making full use of engineered plastic fatigue resistance
· It has excellent resistance to bending fatigue as compared with metals such as aluminum alloys, realizing light and smooth rotation transmission
· For light load transmission such as those from rotary switches, encoders, or small motors
· For rotation transmission parts that require electric insulation

Standard Price:	SGD 11.24-
Days to Ship:	4 Day(s) or more

Plastic Coupling EGJ/EGP

ADVANCED

· The soft coupling helps reduce the rotational energy loss
· Soft yet with high torque rigidity and low rotation angle error
· Select from two types of resin material by softness and torque properties
· Features a mechanism in which torque is low on the motive side, making it effective for use when accurate and stable rotations are required.
· A highly reliable specification with approx. 10 times longer rotational life compared to UJ and GJ types
· Withstand Voltage 1,000 V

Standard Price:	SGD 17.84-
Days to Ship:	9 Day(s) or more

K-7 Coupling SD Series

KAYSEVEN

Compact, high-performance eccentricity absorbing, non-reactive force product with no backlash. Widely used in robots, medical equipment, packaging machinery, and machine tools etc.

Standard Price:	SGD 7.14
Days to Ship:	6 Day(s) or more

MSXP-C Clean, Vacuum, Heat-Resistance Support Coupling - Slit Type (PEEK) - Clamping Type

NABEYA BI-TECH

A clean specification coupling with excellent electrical insulation.
[Features]
· A resin spring coupling with a completely integrated structure that has slits in the cylindrical material.
· Can be used in FPD manufacturing equipment and other environments that require heat and chemical resistance or in clean rooms.
· Uses PEEK, which has excellent physical and chemical properties.
· The amount of outgas is extremely small.
· The leaf spring formed by the slit allows eccentricity, declination and end play.
[Application]
· For FPD manufacturing equipment/semiconductor manufacturing equipment, etc.

CAD ：

2D / 3D

Days to Ship: 6 Day(s) or more

Days to Ship:	6 Day(s) or more

K-7 coupling RD series

KAYSEVEN

Compact, simple structure, with easy to absorb eccentricity and centering. Widely used in robots, resin molding materials, conveying equipment, printing machines, machine tools, and pumps etc.

[Features]
· Compact and simple structure.
· Like the MD series, it consists of three parts, the hub parts and an intermediate torque transmission part.
· Oldham type coupling absorbs eccentric misalignment.
· Dial gauge is not necessary for centering work at installation.
· Visual observation is sufficient.
· The intermediate torque transmission part is made of resin, and so does not require lubricant.
· No reactive force due to misalignment, contributing to energy conservation, with assembly and installation easy.
· Simple structure, and even in the event of damage to the intermediate transmission part, power transmission is possible.
· Thermally and electrically insulated by the intermediate transmission part.
· Friction joint employed for fastening to shaft.

Standard Price:	SGD 9.44-
Days to Ship:	6 Day(s) or more


Brand
Product Series
CAD
Days to Ship
Type
Shaft Bore Dia. (machined) D1(Ø)
Shaft Bore Dia. (machined) D2(Ø)
Outer Dia. A(Ø)
Overall Length W(mm)
Application
Allowable Torque Range(N•m)
Features
Allowable Misalignment
Max. Rotational Speed Range(r/min)
Body Material
Allowable Torque(N•m)
Allowable Angular Misalignment(deg)
Allowable Lateral Misalignment(mm)
Product Category
Allowable Lateral Misalignment Range(mm)
Max. Rotational Speed(r/min)
Buffer Material
Disc Material
Bellows Material


Brand	ADVANCED	MISUMI	KAYSEVEN	ADVANCED	ADVANCED	KAYSEVEN	NABEYA BI-TECH	KAYSEVEN
Product Series	Plastic Coupling GJ	Plastic Coupling - Set Screw, Short	K-7 coupling MD series	Plastic Coupling UJ	Plastic Coupling EGJ/EGP	K-7 Coupling SD Series	MSXP-C Clean, Vacuum, Heat-Resistance Support Coupling - Slit Type (PEEK) - Clamping Type	K-7 coupling RD series
CAD		2D / 3D					2D / 3D
Days to Ship	4 Day(s) or more	5 Day(s) or more	6 Day(s) or more	4 Day(s) or more	9 Day(s) or more	6 Day(s) or more	6 Day(s) or more	6 Day(s) or more
Type	Disc	Slit	Oldham	Disc	Disc	Oldham	Slit	Jaw
Shaft Bore Dia. (machined) D1(Ø)	1.5 ～ 12	1.5 ～ 12	-	2 ～ 8	3 ～ 12	-	6 ～ 15	-
Shaft Bore Dia. (machined) D2(Ø)	1.5 ～ 12	1.5 ～ 12	-	2 ～ 8	3 ～ 12	-	8 ～ 15	-
Outer Dia. A(Ø)	9 ～ 28	8 ～ 28	35 ～ 160	8 ～ 18	22 ～ 28	17.5 ～ 25.5	25 ～ 36	56 ～ 150
Overall Length W(mm)	11.4 ～ 34.4	9 ～ 34.4	-	9 ～ 18	22.2 ～ 32	-	25 ～ 35	20 ～ 25
Application	Standard	Encoder	Standard	Standard / Encoder	Standard	Standard	Standard	Standard
Allowable Torque Range(N•m)	0.05~1.00 ～ 1.01~3.00	0.05~1.00	-	0.05~1.00	0.05~1.00 ～ 1.01~3.00	-	0.05~1.00 ～ 1.01~3.00	-
Features	No Backlash	Low Moment of Inertia ～ No Backlash	Small ～ Vibration Insulation	No Backlash ～ Small	High Durability ～ No Backlash	-	Clean Environment ～ Vacuum Environment	Small
Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Not Provided	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Not Provided	Angular Misalignment / Eccentricity / Axial Misalignment	Not Provided
Max. Rotational Speed Range(r/min)	2001~4000 ～ 10001~78000	2001~4000 ～ 10001~78000	-	2001~4000 ～ 4001~10000	4001~10000 ～ 10001~78000	-	10001~78000	-
Body Material	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic
Allowable Torque(N•m)	0.16 ～ 3	0.05 ～ 0.8	-	0.1 ～ 0.9	1 ～ 3	-	0.7 ～ 1.5	-
Allowable Angular Misalignment(deg)	3 ～ 5	2 ～ 2.5	-	3 ～ 5	4 ～ 6	-	0.5	-
Allowable Lateral Misalignment(mm)	0.2 ～ 0.5	0.05 ～ 0.2	-	0.05 ～ 0.2	0.4 ～ 0.6	-	0.05	-
Product Category	Coupling Main Body	Coupling Main Body	Coupling Main Body	Coupling Main Body	Coupling Main Body	Coupling Main Body	Coupling Main Body	Coupling Main Body
Allowable Lateral Misalignment Range(mm)	0.02~0.2 ～ 0.41~1.0	0.02~0.2	-	0.02~0.2	0.21~0.40 ～ 0.41~1.0	-	0.02~0.2	-
Max. Rotational Speed(r/min)	4000 ～ 12000	4000 ～ 12000	-	4000 ～ 6000	8000 ～ 12000	-	17000 ～ 25000	-
Buffer Material	-	-	Polyacetal	-	-	Polyacetal	-	-
Disc Material	Glass Fiber Reinforced Resin	-	-	Glass Fiber Reinforced Resin / Polyacetal	Glass Fiber Reinforced Resin / Polyacetal	-	-	-
Bellows Material	-	-	-	-	-	-	-	-

Configure

Specification/Dimensions

Shaft Bore Dia. (machined) D1(Ø)
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

58

60

65

70

75

80

0635

09525
Drawing

Clear

Shaft Bore Dia. (machined) D2(Ø)
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

9.252

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

25.4

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

58

60

65

70

75

80
Drawing

Clear

Outer Dia. A(Ø)
6

6.4

8

9

9.5

10

12

12.7

13

13.5

14

14.5

15

15.5

16

16.1

16.5

16.6

16.8

17

17.5

18

19

19.1

19.5

20

21

22

22.2

24

24.5

25

25.4

25.5

26

26.2

26.6

27

27.3

28

28.6

29

30

31.7

31.8

32

33

33.3

34

34.4

35

36

38

38.1

39

39.5

40

41.0

41.3

42

42.5

43

44

44.5

45

46

47

48

49

50

50.8

53

53.6

54

54.5

55

56

57

58

60

63

64

65

66

68

69

69.9

70

73

75

79

79.5

80

81

82

83

85

87

88

90

93

94

94.5

95

99

100

102

104

104.5

105

112

117

118

120

125

126

138

140

143

144

150

152

160

161

168

170

178

185

190

194

200

210

214

225

246

262

276

308

346
Drawing

Clear

Overall Length W(mm)
5.1

7.3

8.4

9

9.4

9.6

10

10.2

10.5

11.2

11.4

11.8

11.9

12

12.35

12.4

12.7

13

13.5

14

14.2

14.4

14.5

14.6

14.7

14.9

15

15.5

15.6

15.7

15.8

15.9

16

16.2

16.5

16.6

16.7

17

17.4

17.5

17.6

17.8

18

18.1

18.4

18.5

18.7

18.8

19

19.1

19.2

19.35

19.4

19.6

19.7

19.8

20

20.2

20.4

20.5

21

21.2

21.3

21.4

21.5

21.6

22

22.1

22.2

22.5

22.9

23

23.05

23.1

23.15

23.2

23.3

23.4

23.5

23.6

24

24.1

24.2

24.4

24.5

24.9

25

25.4

25.45

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

28.3

28.4

28.5

28.6

28.8

29

29.5

29.8

30

30.2

30.4

30.5

31

31.2

31.4

31.5

31.6

31.7

31.8

32

32.2

32.3

32.5

32.6

32.7

32.8

33

33.3

33.5

33.8

34

34.1

34.3

34.4

34.5

35

35.6

36

36.1

36.5

36.8

37

37.2

37.4

37.5

37.8

38

38.1

38.2

38.5

38.6

39

39.2

39.4

39.5

39.7

40

40.5

41

41.3

41.8

42

42.2

43

43.2

43.4

43.5

43.6

44

44.2

44.5

44.7

44.8

45

45.2

45.5

46

46.6

47

47.6

48

48.4

49

49.2

49.4

49.7

50

50.2

50.6

50.8

51

51.2

51.3

52

52.8

53

53.4

53.6

54

54.1

54.3

54.4

54.5

54.6

55

55.5

56

56.2

56.5

56.6

57

58

58.2

58.5

58.6

59

59.7

59.8

59.9

60

60.4

60.5

61

61.2

62

63

63.4

63.5

63.6

63.7

63.8

64

64.8

65

65.6

66

66.6

66.8

67

67.1

67.5

68

68.3

68.5

68.6

68.7

68.8

69.5

69.6

69.8

70

70.5

70.6

70.7

71

71.2

72

72.4

73

73.3

74

74.4

74.8

75

75.6

76

76.2

77

77.6

77.8

78

78.8

79.5

79.8

80

80.8

81

82

82.5

82.6

83

83.6

84

84.7

85

85.2

85.5

85.6

86

88

89.3

89.5

89.6

89.8

89.9

90

90.5

90.8

91

92

93.6

94

95

95.6

96

97.2

98

98.5

98.6

99

99.2

99.6

100

100.2

101

101.6

102

102.5

104

104.4

105.8

106

107.6

108

109

110

111

112.8

113

114

115

115.6

117.6

118

118.4

118.8

119.6

120

120.8

121

123.6

124

125

126

127

129

129.6

131

136.4

137.6

138

140

141

144

144.2

146

147

150

150.6

153.0

154.6

156.4

160

164

164.6

170.6

176

178.4

182.8

192.4

193

200

208.8

209.2

216

217

218

223

238

241.2

249.4

260

286.8

290

307.0

335

337.2

377

391

421

607
Drawing

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 < 500

500 < 1000

1000 < 5000

5000 < 10000

10000 < 20000

20000 < 50000
Clear

Features
Clean Environment

Heat Resistant

High Accuracy

High Durability

High Torque

High Torsional Rigidity

Low Moment of Inertia

No Backlash

Small

Standard (Input Prohibited)

Unfinished Shaft Bore

Vacuum Environment

Vibration Insulation
Clear

Allowable Misalignment
- Not Provided
- Angular Misalignment
- Eccentricity
- Axial Misalignment
Larger Image

Clear

Max. Rotational Speed Range(r/min)
100~ 300

1001~2000

2001~4000

4001~10000

10001~78000

78001~
Clear

Body Material
- Stainless Steel
- Steel
- Aluminum
- Alloy
- Plastic
- Aluminum Alloy
Clear

Allowable Torque(N•m)
0.05

0.06

0.08

0.1

0.12

0.147

0.15

0.16

0.18

0.196

0.2

0.21

0.22

0.25

0.3

0.31

0.343

0.35

0.392

0.4

0.42

0.5

0.54

0.55

0.6

0.65

0.7

0.7845

0.8

0.84

0.9

1

1.1

1.2

1.275

1.3

1.4

1.5

1.6

1.7

1.76

1.8

1.961

2

2.1

2.2

2.3

2.4

2.452

2.5

2.6

2.8

3

3.2

3.3

3.4

3.432

3.5

3.6

3.67

3.8

3.923

4

4.2

4.4

4.5

4.7

4.8

4.9

5

5.4

5.5

5.6

6

6.2

6.3

6.4

6.6

6.8

6.865

6.9

7

7.4

7.5

8

8.4

9

9.4

9.6

9.8

9.807

9.81

10

11

11.2

11.6

12

12.5

12.6

13

13.1

13.5

14

14.7

15

15.4

16

17

17.4

17.65

17.652

18

19

19.7

20

21

22

23

24

24.5

25

26

27

28

29

29.42

30

31

32

33

34

34.3

35

36

37.3

37.5

38

39.227

40

41

42

44

44.13

45

46

48

49

49.033

50

51

52

53.9

54

56

60

61

65

66

67

68

70

71

72

75

76

78.5

79

80

84

85

89

90

92

95

96

98.067

100

107

108

110

114

117

118

120

121

123

130

132

135

137

140

150

151

157

160

170

176

176.52

180

188

190

194

196

198

200

210

215.746

220

226

239

245

250

258

260

265

270

294

300

310

314

320

325

352

370

380

400

441

450

490

510

525

530

580

588

600

637

650

800

810

883

900

980

1000

1120

1300

1370

2000

2100

3400

4000

5000

5400

7000

8000

10000

15000

20000
Calculation of the allowable torque (or the Safety Factor, etc.) differs depending on the manufacturer. For details, see the technical data provided by the relevant manufacturer.
Clear

Allowable Angular Misalignment(deg)
0.1

0.2

0.5

0.6

0.7

1

1.2

1.3

1.4

1.5

1.6

1.8

2

2.5

3

3.5

4

5

6

8

10

14
Clear

Allowable Lateral Misalignment(mm)
0

0.01

0.02

0.03

0.04

0.05

0.06

0.08

0.09

0.1

0.11

0.12

0.14

0.15

0.17

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

0.36

0.38

0.4

0.44

0.45

0.46

0.47

0.48

0.5

0.51

0.52

0.54

0.55

0.6

0.63

0.64

0.68

0.7

0.8

0.82

0.84

0.9

0.91

0.92

1

1.05

1.08

1.1

1.12

1.2

1.3

1.33

1.4

1.5

1.6

1.61

1.9

2

2.1

2.3

2.4

2.5

2.6

2.8

2.9

3

3.2

3.3

3.5

3.8

4

4.5

5

6

7

8

10

12
Clear

Product Category
- Coupling Main Body
- Maintenance Components
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

Max. Rotational Speed(r/min)
7,700

14,000

16,000

17,000

18,000

20,000

24,000

27,000

30,000

40,000

250

900

2000

2200

2400

2500

2550

2800

3000

3100

3200

3400

3500

3600

3750

3800

4000

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Flexible Shaft Couplings（Body Material：Plastic）

Type

Configure

Specification/Dimensions

Shaft Bore Dia. (machined) D1(Ø)

Shaft Bore Dia. (machined) D2(Ø)

Outer Dia. A(Ø)

Overall Length W(mm)

Application

Allowable Torque Range(N•m)

Features

Allowable Misalignment

Max. Rotational Speed Range(r/min)

Body Material

Allowable Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

Product Category

Allowable Lateral Misalignment Range(mm)

Max. Rotational Speed(r/min)

Buffer Material

Disc Material

Bellows Material

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