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Torsion Springs（Inner Dia. ID：Ø2）

Torsion springs are a type of wire spring. They are springs that receive a twisting moment around the coil. The shape of torsion spring ends is determined by the mounting location and method, enabling selection of 90-, 135- or 180-degree arm angles. Unlike compression springs and tension springs, torsion springs can reduce the design space and labor. Torsion springs can be classified primarily into close-wound and pitch-wound types. When selecting a torsion spring, it's important to carefully check the free length, average coil diameter and spring constant to select the right model for the usage environment or application. But when selecting models, note that different manufacturers define free length differently.

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Brand	(3) (1) ACCURATE (0) SAMINI (0) SHINSEI HATSUJHO (0) SHOWA SPRING (0)
CAD	2D 3D
Days to Ship	All Same day 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less Others

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MiSUMi Economy

Torsion Springs, Arm Angle (90°/135°/180°)

MiSUMi Economy

MISUMI

· Economy Torsion Springs Series -Arm angles of 90°/135°/180°.
· The series includes C-UA90R, C-UA90L, C-UA135R, C-UA135L, C-UA180R and C-UA180R.
· Material: Stainless Steel (SUS304-WPB)
· Arm Angle: 90°/135°/180°.
· Type of Arm Angle: Right Winding and Left Winding
· Inner Diameter: 2, 3, 4, 5 and 6
· Number of coil n: 3, 4 and 5.
· Torsion springs are used in various applications such as automotive, aerospace, industrial machinery, and electrical devices.
· Torsion springs are designed to generate torque or rotational force when twisted or subjected to angular deflection.

Volume Discount

CAD ：: 2D / 3D

Free Angle θ	Environmentally friendly	Inner Dia. ID	Characteristics/Applications	Helix Angle φd2(deg)	Wire Dia. d(Ø)	Number of Winding n	Spring Constant k(N･mm/deg)	Material	Cleaning Method
90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil	-	Ø2	-	-	0.3 ～ 0.4	5	-	Steel	-

Days to Ship: Same day or more

Same day or more

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Torsion Springs

MISUMI

· Torsion Springs Arm angles of 90°/135°/180°.
· The series includes UA90R, UA90L, UA135R, UA135L, UA180R and UA180R.
· Material: Stainless Steel (SUS304-WPB)
· Arm Angle: 90°/135°/180°.
· Type of Arm Angle: Right Winding and Left Winding
· Inner Diameter: 2, 3, 4, 5 and 6
· Number of coil n: 2, 3, 4 and 5.
· Torsion springs are used in various applications such as automotive, aerospace, industrial machinery, and electrical devices.
· Torsion springs are designed to generate torque or rotational force when twisted or subjected to angular deflection.

CAD ：: 2D / 3D

Free Angle θ	Environmentally friendly	Inner Dia. ID	Characteristics/Applications	Helix Angle φd2(deg)	Wire Dia. d(Ø)	Number of Winding n	Spring Constant k(N･mm/deg)	Material	Cleaning Method
90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil	-	Ø2	-	36 ～ 61	0.2 ～ 0.4	2 / 3 / 4 / 5	0.0088 ～ 0.0363	Stainless Steel	-

Days to Ship: 13 Day(s) or more

13 Day(s) or more

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[Clean & Pack]Torsion Springs

MISUMI

Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.

■Part Number for Clean & Pack Products

·Degreasing (Anti-rust single packing)	: Part Number SL-□□
·Precision cleaning (Degassing double packing)	: Part Number SH-□□
·Electrolytic polishing + precision cleaning (Degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.

[Features]Arm angles of 90°/135°/180° are available for right and left winding.

Volume Discount

CAD ：: 2D / 3D

Free Angle θ	Environmentally friendly	Inner Dia. ID	Characteristics/Applications	Helix Angle φd2(deg)	Wire Dia. d(Ø)	Number of Winding n	Spring Constant k(N･mm/deg)	Material	Cleaning Method
90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil	RoHS Compliant (10 Substances)	Ø2	Clean Washed	23 ～ 61	0.2 ～ 0.4	2 / 3 / 4 / 5	0.0088 ～ 0.1108	Stainless Steel	Degreasing / Precision Cleaning / Electrolytic Polishing + Precision Cleaning

Days to Ship: 9 Day(s) or more

9 Day(s) or more


Brand
Product Series
CAD
From
Days to Ship
Specifications
Free Angle θ
Environmentally friendly
Inner Dia. ID
Characteristics/Applications
Helix Angle φd2(deg)
Wire Dia. d(Ø)
Number of Winding n
Spring Constant k(N･mm/deg)
Material
Cleaning Method

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	MISUMI MiSUMi Economy	MISUMI	MISUMI
Product Series	Torsion Springs, Arm Angle (90°/135°/180°)	Torsion Springs	[Clean & Pack]Torsion Springs
CAD	2D / 3D	2D / 3D	2D / 3D
From
Days to Ship	Same day or more	13 Day(s) or more	9 Day(s) or more
Specifications
Free Angle θ	90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil	90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil	90° Right Winding Coil / 135° Right Winding Coil / 180° Right Winding Coil / 90° Left Winding Coil / 135°Left Winding Coil / 180°Left Winding Coil
Environmentally friendly	-	-	RoHS Compliant (10 Substances)
Inner Dia. ID	Ø2	Ø2	Ø2
Characteristics/Applications	-	-	Clean Washed
Helix Angle φd2(deg)	-	36 ～ 61	23 ～ 61
Wire Dia. d(Ø)	0.3 ～ 0.4	0.2 ～ 0.4	0.2 ～ 0.4
Number of Winding n	5	2 / 3 / 4 / 5	2 / 3 / 4 / 5
Spring Constant k(N･mm/deg)	-	0.0088 ～ 0.0363	0.0088 ～ 0.1108
Material	Steel	Stainless Steel	Stainless Steel
Cleaning Method	-	-	Degreasing / Precision Cleaning / Electrolytic Polishing + Precision Cleaning

Configure

Specification/Dimensions

Free Angle θ
- 90° Right Winding Coil
- 135° Right Winding Coil
- 180° Right Winding Coil
- 90° Left Winding Coil
- 135°Left Winding Coil
- 180°Left Winding Coil
- Left and Right Winding 90° coils
- Left and Right Winding 135° coils
Images

Clear

Environmentally friendly
- RoHS Compliant (10 Substances)
Clear

Inner Dia. ID
Ø2

Ø3

Ø4

Ø5

Ø5.5

Ø6

Ø7

Ø8

Ø9

Ø10

Ø12

Ø14

Ø16

Ø18
Drawing

Clear

Characteristics/Applications
Clean Washed
Details

Clear

Helix Angle φd2(deg)
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

63

64

65

66

67

68

69

70

71

72

73

74

75

75(0.6) 54(0.8)

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

114

115

116

119

122

125

128

131

134

135

137

140

144
Drawing

Clear

Wire Dia. d(Ø)
0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.2

1.4

1.5

1.6

1.8

2

2.3

2.6

2.9
Drawing

Clear

Number of Winding n
- 2
- 3
- 4
- 5
Drawing

Clear

Spring Constant k(N･mm/deg)
0.0088

0.0090

0.0093

0.0115

0.0119

0.0124

0.02

0.024

0.025

0.0289

0.0295

0.03

0.0302

0.0304

0.0314

0.0345

0.0354

0.0363

0.038

0.0387

0.04

0.0403

0.042

0.0428

0.0441

0.0455

0.05

0.055

0.056

0.0563

0.058

0.0586

0.059

0.0611

0.0617

0.062

0.0630

0.0643

0.07

0.0722

0.073

0.0736

0.0744

0.075

0.0755

0.076

0.0774

0.08

0.0882

0.09

0.091

0.0912

0.0918

0.0920

0.094

0.0955

0.0970

0.098

0.0996

0.1

0.1054

0.1080

0.11

0.1108

0.112

0.1138

0.115

0.1161

0.118

0.1185

0.1199

0.12

0.122

0.1248

0.127

0.13

0.1301

0.131

0.134

0.1357

0.1368

0.137

0.139

0.1409

0.141

0.1425

0.1454

0.1471

0.148

0.15

0.1501

0.1533

0.16

0.1680

0.17

0.173

0.1732

0.1756

0.177

0.1787

0.1793

0.1799

0.18

0.181

0.184

0.1845

0.1866

0.1894

0.190

0.191

0.192

0.1933

0.194

0.1944

0.1974

0.199

0.2

0.21

0.217

0.22

0.2206

0.224

0.225

0.2259

0.229

0.2296

0.23

0.2314

0.2315

0.235

0.2363

0.2373

0.2394

0.2413

0.2436

0.2512

0.256

0.26

0.271

0.272

0.2763

0.279

0.2797

0.28

0.2831

0.286

0.288

0.2883

0.29

0.2903

0.2974

0.301

0.302

0.306

0.309

0.3099

0.313

0.316

0.319

0.32

0.3224

0.332

0.3360

0.34

0.35

0.352

0.36

0.361

0.3672

0.376

0.3821

0.391

0.3983

0.4

0.403

0.41

0.426

0.43

0.440

0.443

0.45

0.453

0.457

0.461

0.469

0.47

0.472

0.476

0.487

0.4939

0.498

0.5041

0.506

0.5147

0.52

0.522

0.527

0.552

0.56

0.57

0.5811

0.582

0.587

0.5891

0.5931

0.596

0.6037

0.6056

0.61

0.611

0.6190

0.63

0.635

0.640

0.65

0.656

0.67

0.672

0.68

0.682

0.6936

0.699

0.703

0.7108

0.715

0.716

0.72

0.726

0.7289

0.7299

0.744

0.75

0.7523

0.755

0.77

0.7762

0.787

0.791

0.8

0.802

0.822

0.83

0.84

0.843

0.87

0.878

0.900

0.922

0.94

0.9590

0.96

0.978

0.9981

1.02

1.03

1.04

1.0406

1.05

1.07

1.08

1.10

1.11

1.12

1.13

1.15

1.1765

1.18

1.19

1.2008

1.21

1.2262

1.23

1.30

1.31

1.32

1.34

1.35

1.36

1.38

1.40

1.4045

1.41

1.42

1.4394

1.44

1.45

1.4760

1.48

1.49

1.52

1.53

1.54

1.56

1.58

1.59

1.592

1.62

1.68

1.686

1.69

1.73

1.77

1.79

1.80

1.84

1.87

1.88

1.96

1.98

2.01

2.03

2.05

2.06

2.08

2.09

2.11

2.17

2.18

2.23

2.28

2.29

2.3

2.31

2.32

2.34

2.41

2.42

2.44

2.45

2.47

2.50

2.51

2.53

2.55

2.57

2.65

2.66

2.81

2.82

2.86

2.91

2.93

2.95

3.12

3.17

3.18

3.22

3.26

3.28

3.30

3.34

3.41

3.42

3.44

3.51

3.52

3.54

3.57

3.60

3.61

3.62

3.66

3.69

3.75

3.78

3.8

3.81

3.89

3.95

3.98

4.05

4.11

4.13

4.18

4.22

4.28

4.45

4.46

4.58

4.59

4.63

4.66

4.77

4.85

4.89

5.05

5.08

5.12

5.16

5.17

5.23

5.25

5.26

5.37

5.38

5.44

5.46

5.47

5.54

5.59

5.62

5.70

5.72

5.73

5.77

5.81

5.95

6.00

6.04

6.14

6.25

6.30

6.33

6.39

6.41

6.42

6.44

6.58

6.74

6.85

7

7.03

7.35

7.5

7.52

7.53

7.60

7.72

7.82

8.04

8.15

8.23

8.28

8.33

8.39

8.55

8.59

8.6

8.61

8.80

8.82

8.89

8.96

9.02

9.17

9.25

9.37

9.44

9.55

9.64

9.66

9.8

9.90

10.2

10.4

10.8

10.9

11.06

11.2

11.3

11.5

11.52

11.8

11.9

12.0

12.2

12.4

12.7

12.9

13.3

13.5

13.6

13.9

14.0

14.3

14.4

14.53

15.0

15.49

15.6

15.9

16.2

16.9

17.2

17.6

18.2

19.3

20.0

20.36

21.2

21.5

22.4

22.5

22.6

23.3

23.7

23.9

24.3

24.9

25.4

27.2

28.1

31.1

32.7

32.9

33.5

34.0

34.3

35.0

35.6

38.3

39.9

41.5

52.8

53.6

54.9

55.4

57.2

58.6

62.3

76.3

80.8

85.8
Clear

Material
- Stainless Steel
- Steel
Clear

Cleaning Method
- Degreasing
- Precision Cleaning
- Electrolytic Polishing + Precision Cleaning
Clear

Related Categories to Torsion Springs

FAQ Torsion Springs

Question: How do I know what torsion spring I need for my work?: Answer: To determine the appropriate torsion spring for your work, you need to consider factors such as required torque, angular deflection, wire diameter, coil diameter, and leg length. Calculating these parameters using spring design equations or consulting with a mechanical engineer can help identify the specific torsion spring that meets your application's requirements.
Question: How do you calculate the torque of a torsion spring?: Answer: To calculate the torque of a torsion spring, you need to know the spring constant (k) and the angular deflection (θ). The torque (M) can be calculated using the formula: M = k * θ. The spring constant is determined by the material properties and spring geometry, while the angular deflection is the amount of twist applied to the spring.
Question: Types of Torsion Springs?: Answer: There are several types of torsion springs, each designed to meet specific application requirements. Some common types include:
Straight Torsion Springs: These are the most basic type of torsion springs, consisting of a straight, helical coil. They exert torque when twisted around the axis of the coil.
Double Torsion Springs: Double torsion springs consist of two separate coils connected by a central section. They are used when torque needs to be applied in two directions simultaneously, such as in automotive applications like trunk lids or in certain types of hinges.
Short Hook Torsion Springs: Short hook torsion springs have short end hooks that allow for easy attachment to other components. They are commonly used in applications where space is limited, such as in small electronic devices or medical equipment.
Hinge Torsion Springs: Hinge torsion springs are designed specifically for use in hinges, providing the necessary torque to operate the hinge mechanism smoothly. They are commonly used in doors, lids, and other swinging mechanisms.
Clock Springs: Clock springs, also known as spiral torsion springs, are tightly wound coils that exert torque in a spiral motion. They are commonly used in mechanical clocks, watches, and other timekeeping devices.
Tapered Torsion Springs: Tapered torsion springs have a varying coil diameter along their length, which allows for a more gradual torque application. They are used in applications where a constant rate of torque is required throughout the rotation.
Custom Torsion Springs: In addition to standard types, torsion springs can be custom-designed to meet specific application requirements. Customization options include varying the size, shape, material, and other design parameters to achieve the desired performance characteristics.
Question: What factors affect the lifespan of a torsion spring?: Answer: The lifespan of a torsion spring is influenced by several factors. These include the quality of the spring material, the design and manufacturing process, the applied load and stress levels, the frequency and magnitude of cycles, environmental conditions (such as temperature and corrosive agents), proper installation and maintenance practices, and the avoidance of excessive overloading or fatigue conditions.
Question: How do you install and maintain a torsion spring?: Answer: To install a torsion spring, mount it securely on the shaft, ensuring proper alignment and balance. Apply appropriate lubrication to minimize friction and wear. Maintain the spring by regularly inspecting for signs of fatigue, wear, or damage. Replace worn or damaged springs promptly. Keep the spring clean and free from debris. Follow manufacturer guidelines and recommended maintenance practices for optimal performance and longevity.

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Torsion Springs（Inner Dia. ID：Ø2）

Configure

Specification/Dimensions

Free Angle θ

Environmentally friendly

Inner Dia. ID

Characteristics/Applications

Helix Angle φd2(deg)

Wire Dia. d(Ø)

Number of Winding n

Spring Constant k(N･mm/deg)

Material

Cleaning Method

Related Categories to Torsion Springs

FAQ Torsion Springs

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