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MIKI PULLEY Flexible Shaft Couplings（Allowable Torque Range：20.01~50.00）

Type

Slit
Disc
Oldham
Jaw
Bellows
Others
Vibration Damping Rubber Type

8 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 142.33-
	Special Price
Days to Ship:	4 Day(s) 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 73.75-
Days to Ship:	18 Day(s) or more

Star Flex ALS-B

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.

CAD ：: 2D

Standard Price:	SGD 73.75-
Days to Ship:	18 Day(s) or more

Spa Flex AL

MIKI PULLEY

Type using aluminum alloy for hub material and weight reduction, and employing nitrile rubber as buffer material.

[Features]
· Simple structure composed of two hubs and cushioning material (spider), uses aluminum alloy for hub, and lightweight.
· Coupling can be connected / separated only by moving in the axial direction.
· Because aluminum alloy is used for hub material, it is light weight with low inertia.

CAD ：: 2D

Standard Price:	SGD 67.86-
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 11.49-
Days to Ship:	12 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

Standard Price:	SGD 216.64-
Days to Ship:	4 Day(s) or more

Baumann flex MF

MIKI PULLEY

Flange type for a wide range of mounting needs.

[Features]
· Compact and high torque.
· Three-layer coil structure achieves, compact size with high torque.

CAD ：: 2D

Standard Price:	SGD 206.00
Days to Ship:	4 Day(s) or more

Bowman Flexible MM

MIKI PULLEY

· MM Models - Metal Coil Spring Couplings BAUMANNFLEX.
· MM Models is a standard coupling type.
· Pilot bore/added work ranges: φ3 ～ 35 mm.
· Hub material: steel SUM24L and stainless steel SUS303.
· Metal coil spring material: Piano wire and stainless steel.
· Hexagon head set screw material: Alloy steel for machine structural use Surface finishing: Black coating.
· MM Models Allowable Angular misalignment 3 degree.
· Application: Vacuum equipment, medical equipment, printing machine.
· MM Models Max. nominal torque: 220 [N.m].
· MM Models Operating temperature: BAUMANNFLEX: -30 to 100 °C

CAD ：: 2D

Standard Price:	SGD 166.39-
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
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	MIKI PULLEY
Product Series	Servo Flex SFC	Star Flex ALS-R	Star Flex ALS-B	Spa Flex AL	Star FlexALS-Y	Servo flexible, SFS	Baumann flex MF	Bowman Flexible MM
CAD	2D / 3D	2D	2D	2D	2D	2D	2D	2D
Days to Ship	4 Day(s) or more	18 Day(s) or more	18 Day(s) or more	4 Day(s) or more	12 Day(s) or more	4 Day(s) or more	4 Day(s) or more	7 Day(s) or more
Type	Disc	Jaw	Jaw	Jaw	Jaw	Disc	Bellows	Bellows
Shaft Bore Dia. (machined) D1(Ø)	9 ～ 30	12 ～ 19	12 ～ 19	11 ～ 48	15 ～ 28	12 ～ 15	-	10 ～ 24
Shaft Bore Dia. (machined) D2(Ø)	9.525 ～ 35	12 ～ 28	12 ～ 28	11 ～ 48	15 ～ 28	12 ～ 15	-	10 ～ 24
Outer Dia. A(Ø)	56 ～ 68	40 ～ 55	40 ～ 55	66 ～ 85	55	68 ～ 82	65	45 ～ 48
Overall Length W(mm)	43.4 ～ 89.3	66 ～ 78	66 ～ 78	88 ～ 110	78	56 ～ 112.8	60	80
Application	Servo Motor / Stepping Motor / Encoder	Standard / Servo Motor / Stepping Motor / Encoder	Standard	Standard / Stepping Motor	Standard / Servo Motor / Stepping Motor / Encoder	Servo Motor	Standard / Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor
Allowable Torque Range(N•m)	20.01~50.00	20.01~50.00	20.01~50.00	20.01~50.00	20.01~50.00	20.01~50.00	20.01~50.00	20.01~50.00
Features	High Accuracy ～ Small	High Accuracy ～ Vibration Insulation	High Durability ～ Vibration Insulation	Unfinished Shaft Bore ～ Vibration Insulation	Low Moment of Inertia ～ Vibration Insulation	High Accuracy ～ Unfinished Shaft Bore	High Torque ～ Unfinished Shaft Bore	High Torque ～ Unfinished Shaft Bore
Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	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
Max. Rotational Speed Range(r/min)	4001~10000	4001~10000	4001~10000	2001~4000 ～ 4001~10000	4001~10000	4001~10000 ～ 10001~78000	4001~10000	4001~10000
Body Material	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Steel	Steel	Stainless Steel / Steel
Allowable Torque(N•m)	22 ～ 50	23 ～ 48	23 ～ 48	25 ～ 50	35 ～ 48	40	40	40
Allowable Angular Misalignment(deg)	1 ～ 2	1	1	1	1	1 ～ 2	3	3
Allowable Lateral Misalignment(mm)	0.02 ～ 0.63	0.1	0.2 ～ 0.22	0.3	0.15	0.3 ～ 0.5	0.8	0.7 ～ 0.9
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	0.21~0.40	0.02~0.2	0.21~0.40 ～ 0.41~1.0	0.41~1.0	0.41~1.0
Max. Rotational Speed(r/min)	10000	7000 ～ 10000	7000 ～ 10000	4000 ～ 5000	7000 ～ 8700	5000 ～ 20000	7000	7000
Buffer Material	-	Polyurethane	Polyurethane	Others	Polyurethane	-	-	-
Disc Material	Stainless Steel	-	-	-	-	Stainless Steel	-	-
Bellows Material	-	-	-	-	-	-	-	-
Cleaning Method	-	-	-	-	-	-	-	-
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

9.252

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

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MIKI PULLEY Flexible Shaft Couplings（Allowable Torque Range：20.01~50.00）

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

Characteristics/Applications

Environmentally friendly

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CAD

Days to Ship

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