(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.
Instead, please kindly use other browsers like Google Chrome, Microsoft Edge or Mozilla Firefox.

7 Million Products, 2,000 Brands.
50,000 Stock items for Same Day Ship Out.

All Categories

Search by Application

inCAD Library

Brands

Brand List

Webcode Seach | Series: #CODE

Keyword suggestions

Part number suggestions

Discontinued Products

Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 7:00 2/3 to 6:00 (SGT) 3/3/2025. We apologize for the inconvenience.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

How can we improve?

Feedback

Name (Optional)

E-mail Address (Optional)

Tel (Optional)

Thank you for your time.
Your feedback is essential for our continuous improvement
Privacy Policy

Thank you for your cooperation.

Thank you for your time.
Your feedback is essential for our continuous improvement
Please use the inquiry form.

MIKI PULLEY Flexible Shaft Couplings（Features：No Backlash）

Type

Slit
Disc
Oldham
Jaw
Bellows
Others
Vibration Damping Rubber Type

7 items

: 30; 45; 60

On Sale Till 31/03/2025

Servo Flex SFC

MIKI PULLEY

· SFC Model for Servo Coupling
· Application: Servo Motor / Stepping Motor / Encoder.
· Body material: Using aluminum clad in a clear anodized finish.
· Disc members are made of 304 stainless steels.
· Single and double element configurations are available.
· Bores can be configured with clamp, taper-lock, or keyed styles.
· Maximum Rotational Speed Range: 4001 ~ 10000 (r/min).
· Maximum allowable torque: 250 Nm.
· Bore size range: 3 mm to 45mm.
· Backlash: Zero.
· Operating Temperature Range: -30 to 100 °C
· Couplings are precisely assembled using high strength, corrosion resistant fasteners.

CAD ：: 2D / 3D

Standard Price:	SGD 65.61-
	Special Price
Days to Ship:	Same day or more

Star Flex ALS-R

MIKI PULLEY

Element hardness 97JIS A used, designed to use preliminary compression with no backlash. Supports a wide range of applications, from simple servo to general purpose motor with high torque.

[Features]
· Polyurethane elastomer used for element. So, the transmission torque is more than twice that of conventional jaw coupling.
· Design to distribute pre-compression, and so can be used with no backlash. (ALS-Y/R type)
· Power transmission through polyurethane elastomer with rubber elastic force. It has excellent vibration and impact absorption.

CAD ：: 2D

Standard Price:	SGD 4.99-
Days to Ship:	4 Day(s) or more

Star FlexALS-Y

MIKI PULLEY

· ALS-Y models High performance STARFLEX PULLEY MIKI.
· Shaft Tightening Method: Set Screw Type
· Application: Encoder, Stepping Motor.
· Hub material: Aluminum Alloy.
· Spacer Element material: Polyurethane elastomer.
· Accessories: Hexagon head set screw material: Alloy steel use Surface finishing is Black coating.
· Nominal torque: : 1.2 to 310 [N.m].
· Operating Temperature Range: -30 to 80 °C
· These are JIS A tight-fit models that have a shore hardness of 90 and are equipped with a good balance of torque transmission performance, flexibility, and responsiveness.

CAD ：: 2D

Standard Price:	SGD 4.99-
Days to Ship:	12 Day(s) or more

Bellows flex CHP

MIKI PULLEY

Resin bellows employed in pursuit of flexible and low inertia.

[Features]
· Using resin boots absorbs vibration.
· Compact design with integrated hub and boot, with no backlash.
· Coupling with extremely small shaft reactive force owing to vibration absorption or installation error, suitable for stepping motor, encoder, etc.

CAD ：: 2D

Standard Price:	SGD 23.70-
Days to Ship:	4 Day(s) or more

Servo flexible, SFS

MIKI PULLEY

Using carbon steel for the main body material, with very precise adjustment and high rigidity.

[Features]
· Torsional rigidity is extremely high, accurate shaft rotation, super precision control is possible.
· Since all power transmission is transmitted by friction coupling, there is no backlash.
· SFS-SS/ DS type is shipped from the factory as an assembled finished product.

CAD ：

2D

Days to Ship: 4 Day(s) or more

Days to Ship:	4 Day(s) or more

Servo FlexSFH

MIKI PULLEY

Large type metal plate spring coupling.

Standard Price:	SGD 822.48-
Days to Ship:	43 Day(s) or more

Step Flex STF

MIKI PULLEY

Newly developed multi-layer rubber element achieves high attenuation and low recoil force. Couplings with high damping performance. For servo and stepper motors.
Integrated structure with no backlash that adopts HNBR for the power transmitting element. Damps vibration more quickly than a flexible coupling using metal for the elastic part.
This makes it possible to inhibit resonance, a phenomenon which tends to occur with stepper motors, etc. Helps avoid resonance over a wide range of operating speeds. Provides stable high speed control.
Furthermore, by using a layered rubber element sandwiched between HNBR with different levels of hardness, the shaft reaction force due to misalignment is reduced. The burden on the counter shaft and bearing can be reduced drastically.

Standard Price:	SGD 72.06-
Days to Ship:	7 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
Cleaning Method
Operating Environment
Characteristics/Applications
Environmentally friendly

	On Sale Till 31/03/2025
Brand	MIKI PULLEY	MIKI PULLEY	MIKI PULLEY	MIKI PULLEY	MIKI PULLEY	MIKI PULLEY	MIKI PULLEY
Product Series	Servo Flex SFC	Star Flex ALS-R	Star FlexALS-Y	Bellows flex CHP	Servo flexible, SFS	Servo FlexSFH	Step Flex STF
CAD	2D / 3D	2D	2D	2D	2D
Days to Ship	Same day or more	4 Day(s) or more	12 Day(s) or more	4 Day(s) or more	4 Day(s) or more	43 Day(s) or more	7 Day(s) or more
Type	Disc	Jaw	Jaw	Bellows	Disc	Disc	Vibration Damping Rubber Type
Shaft Bore Dia. (machined) D1(Ø)	3 ～ 45	3 ～ 60	3 ～ 60	3 ～ 12	10 ～ 40	-	6.35 ～ 15
Shaft Bore Dia. (machined) D2(Ø)	3 ～ 45	3 ～ 60	3 ～ 60	3 ～ 12	12 ～ 55	-	6.35 ～ 28
Outer Dia. A(Ø)	12 ～ 104	14 ～ 105	14 ～ 105	20 ～ 34	56 ～ 144	152 ～ 262	19 ～ 56
Overall Length W(mm)	12.35 ～ 101.6	22 ～ 140	22 ～ 140	28 ～ 40	45 ～ 170.6	101 ～ 391	25 ～ 60
Application	Servo Motor / Stepping Motor / Encoder	Standard / Servo Motor / Stepping Motor / Encoder	Standard / Servo Motor / Stepping Motor / Encoder	Stepping Motor / Encoder	Servo Motor	Servo Motor	Servo Motor / Stepping Motor
Allowable Torque Range(N•m)	0.05~1.00 ～ 100 < 500	0.05~1.00 ～ 500 < 1000	0.05~1.00 ～ 100 < 500	0.05~1.00 ～ 1.01~3.00	10.01~20.00 ～ 500 < 1000	1000 < 5000 ～ 5000 < 10000	1.01~3.00 ～ 50.01~100.00
Features	High Accuracy ～ Small	High Accuracy ～ Vibration Insulation	Low Moment of Inertia ～ Vibration Insulation	High Accuracy ～ Vibration Insulation	High Accuracy ～ Unfinished Shaft Bore	High Accuracy ～ Unfinished Shaft Bore	High Torque ～ Vibration Insulation
Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Not Provided / Angular Misalignment / Eccentricity / Axial Misalignment	Not Provided / Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment
Max. Rotational Speed Range(r/min)	4001~10000	4001~10000 ～ 10001~78000	4001~10000 ～ 10001~78000	4001~10000	2001~4000 ～ 10001~78000	2001~4000 ～ 4001~10000	4001~10000
Body Material	Aluminum	Aluminum	Aluminum	Aluminum	Steel	Steel	Aluminum
Allowable Torque(N•m)	0.25 ～ 250	0.31 ～ 525	0.31 ～ 310	0.4 ～ 1.5	20 ～ 800	1000 ～ 8000	3 ～ 60
Allowable Angular Misalignment(deg)	0.5 ～ 2	1	1	10	1 ～ 2	1 ～ 2	1.5
Allowable Lateral Misalignment(mm)	0.01 ～ 0.63	0.1 ～ 0.15	0.1 ～ 0.2	0.5	0.2 ～ 0.9	1.6 ～ 2.9	0.15 ～ 0.2
Product Category	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	0.41~1.0	0.02~0.2 ～ 0.41~1.0	1.1~3.0	0.02~0.2
Max. Rotational Speed(r/min)	10000	4500 ～ 34100	4500 ～ 34100	5500 ～ 9000	3800 ～ 25000	3400 ～ 5900	10000
Buffer Material	-	Polyurethane	Polyurethane	-	-	-	Others
Disc Material	Stainless Steel	-	-	-	Stainless Steel	Stainless Steel	-
Bellows Material	-	-	-	Others	-	-	-
Cleaning Method	-	-	-	-	-	-	-
Operating Environment	-	-	-	-	-	-	-
Characteristics/Applications	-	-	-	-	-	-	-
Environmentally friendly	-	-	-	-	-	-	-

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

9.25

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

53.2

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

60.8

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

75.8

76

76.2

77

77.6

77.8

78

78.8

79.5

79.8

80

80.8

81

82

82.5

82.6

82.8

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

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

230

239

245

250

258

260

265

270

294

300

310

314

320

325

352

360

370

380

385.6

400

441

450

490

510

525

530

580

588

600

637

650

689

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

4200

4300

4400

4500

4600

4700

4800

5000

5100

5200

5250

5500

5800

5900

6000

6100

6200

6500

6800

7000

7400

7500

7600

7700

7900

8000

8200

8400

8500

8700

9000

9200

9300

9400

9500

9600

9800

10000

11000

11900

12000

13000

14000

15000

15900

16000

17000

18000

19000

20000

21000

22000

23000

23800

24000

25000

26000

27000

30000

31000

32000

33000

34100

35000

37000

39000

42000

45000

48000

52000

63000

78000

100000
Clear

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

Disc Material
- Stainless Steel
- Polyimide
- Carbon Fiber
- Aluminum
- Glass Fiber Reinforced Resin
- Polyacetal
Clear

Bellows Material
- Stainless Steel
- Phosphor Bronze
- Others
Clear

Cleaning Method
- Degreasing
- Precision Cleaning
Clear

Operating Environment
- General
- For Clean Environments
Clear

Characteristics/Applications
Clean washed

Corrosion resistance/chemical resistance

Heat resistance

Low Dust Generation

Vacuum
Clear

Environmentally friendly
- RoHS Compliant (10 Substances)
Clear

Narrow search by specifying Manufacturer

- MISUMI (32)
- Economy series (11)
- SUNGIL (30)
- COUP-LINE (21)
- NABEYA BI-TECH (18)
- ADVANCED (8)
- SCH (8)
- MIKI PULLEY (7)
- KAYSEVEN (5)
- MIGHTY (5)
- NIHON MINIATURE (5)
- ISEL (2)
- ORIENTAL MOTOR (1)
- KOYO ELECTRONIC (0)
- MITSUBOSHI BELTING (0)
- SAKAI MANUFACTURING (0)
- SS (0)
Clear

CAD

- 2D
- 3D
Clear

Days to Ship

All

Same day

3 Day(s) or Less

4 Day(s) or Less

5 Day(s) or Less

6 Day(s) or Less

7 Day(s) or Less

8 Day(s) or Less

9 Day(s) or Less

10 Day(s) or Less

11 Day(s) or Less
Clear

All Categories

Categories

Search by Application

Brands

Message from MISUMI

My Favorites

Settings

How can we improve?

MIKI PULLEY Flexible Shaft Couplings（Features：No Backlash）

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

Cleaning Method

Operating Environment

Characteristics/Applications

Environmentally friendly

Narrow search by specifying Manufacturer

CAD

Days to Ship

Related Categories to Flexible Shaft Couplings

Payment Method more

About MISUMI

About this Website

Useful Tools

Customer Service

Social Media

MISUMI Contact 9:00 am – 6:00 pm (Mon – Fri), 9:00 am – 3 pm (Sat)