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Round Coil Springs-Fmax. (Allowable Deflection) = Lx35%-40%/O.D. Referenced (WM4-20)

On Sale Till 31/03/2025
Volume Discount

MISUMI

Part Number

Configured Part Number is shown.

WM4-20

Product TOP

Part Number

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Part Number
WM4-20

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Free Length L (mm)	Inner Dia. D-2d (or D) (Ø)	Outer Dia. D (or D1) (Ø)	Height with the max. load applied ([Free Length] – [Allowable Deflection]) (mm)	Spring Constant (N/mm)	Allowable Load (Configurable Range) (N)	Max. Load (N)	Wire Dia. (Ø)	End Surface Status	Solid Length (mm)
	SGD 1.13	1 Piece(s)	Available	Same day	10	20	2.9	4	13	2	8.51~16.00	13.7	0.55	With Grinding	7.7

Basic Information

Material	SWP-A

Please check the type/dimensions/specifications of the part WM4-20 in the Round Coil Springs-Fmax. (Allowable Deflection) = Lx35%-40%/O.D. Referenced series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

type
- WM
- WT
Clear
Free Length L(mm)
5

10

15

20

25

30

35

40

45

50

55

60

65

70

80

90

100
Clear
Inner Dia. D-2d (or D)(Ø)
1.9

2

2.1

2.2

2.24

2.3

2.4

2.7

2.8

2.9

3

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

4

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

5

5.4

5.6

5.8

6

6.2

6.4

6.5

6.6

7.2

7.4

7.6

7.8

8

8.2

8.3

8.8

9

9.2

9.4

9.6

9.8

10

10.2

10.4

10.6

10.8

11

11.2

11.4

11.6

12.2

12.4

12.6

12.8

13

13.2

13.4

13.6

13.8

14

14.2

14.4

14.6

14.8

15.2

15.6

16

16.2

16.4

16.8

17.2

17.4

17.8

18

18.2

18.4

21

21.4

21.8

22.2

22.4

22.8
Clear
Outer Dia. D (or D1)(Ø)
3

4

5

6

8

10

12

13

14

16

18

20

22

27
Clear
Height with the max. load applied ([Free Length] – [Allowable Deflection])(mm)
3

3.2

3.3

6

6.5

9

9.7

9.8

12

13

15

16.3

17.5

18

19.5

21

22.8

24

26

27

28

29.2

30

32.5

33

35

35.7

35.8

36

38.5

39

42

42.3

45.5

46.2

47.4

48

50

50.4

52

57.6

58.5

65
Clear
Spring Constant(N/mm)
1.5

2

2.9

3.9

4.9
Clear
Allowable Load (Configurable Range)(N)
- 1.51~4.50
- 4.51~8.50
- 8.51~16.00
- 16.01~30.00
- 30.01~50.00
- 50.01~73.00
- 73.01~107.00
- 107.01~150.00
- 150.01~230.00
Clear
Max. Load(N)
2.9

3.4

3.9

4.9

5.9

6.9

7.8

8.8

9.8

10.3

10.8

11.8

13.7

14.7

15.7

17.7

19.6

20.6

23.5

24

25.5

27.5

30.4

30.9

31.4

34.3

35.3

37.8

39.2

41.2

42.2

43.1

43.5

44.5

46.1

47.1

48.1

49

51

52

53

54.9

55.9

58.8

59.8

61.8

62.8

64.7

65.9

68.6

70.6

71.6

77.5

78.5

82.4

85.3

86.3

92.7

92.9

94.1

102

103

109.8

110.8

119.6

125.5

137.3

154

171.6
Clear
Wire Dia.(Ø)
0.3

0.35

0.38

0.4

0.45

0.5

0.55

0.6

0.65

0.7

0.75

0.8

0.85

0.9

1

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2

2.1

2.2

2.3

2.4

2.6

2.8

3
Clear
End Surface Status
- With Grinding
- Without Grinding
Clear
Solid Length(mm)
1.73

2.3

2.36

2.38

2.5

2.7

2.8

3.25

3.3

3.4

4.2

4.35

4.38

4.7

5

5.1

5.2

5.5

5.53

6

6.3

6.5

6.75

6.8

7

7.4

7.5

7.7

7.8

8

8.25

8.4

8.5

8.78

9.1

9.43

9.63

9.8

10

10.2

10.8

11

11.1

11.3

11.5

11.7

11.9

12

12.5

12.6

12.7

13

13.2

13.3

13.6

14

14.3

14.4

14.5

15

15.6

16

16.2

16.7

17

17.3

17.4

17.5

17.6

17.9

18

18.7

19.5

19.6

19.8

20.4

20.5

21

21.6

22

22.1

22.4

22.5

23

23.2

23.8

24

24.8

26

26.1

26.3

27

27.5

28.2

28.6

28.8

28.9

30

30.6

31

31.2

31.5

32.1

32.2

32.3

32.5

33.6

34

34.1

34.2

36

36.8

37.4

39.2

39.6

40

41.4

42

43

43.5

44.2

44.6

47.3

48.4
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

4 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Similar Part Numbers

Part Number
WM10-25
WM10-30
WM10-35
WM4-25
WM4-30
WM4-35

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Free Length L (mm)	Inner Dia. D-2d (or D) (Ø)	Outer Dia. D (or D1) (Ø)	Height with the max. load applied ([Free Length] – [Allowable Deflection]) (mm)	Spring Constant (N/mm)	Allowable Load (Configurable Range) (N)	Max. Load (N)	Wire Dia. (Ø)	End Surface Status	Solid Length (mm)
SGD 1.49	1 Piece(s)	Available	Same day	10	25	7.8	10	16.3	2.9	16.01~30.00	25.5	1.1	With Grinding	11
SGD 1.49	1 Piece(s)	Available	Same day	10	30	7.8	10	19.5	2.9	30.01~50.00	30.4	1.1	With Grinding	11
SGD 1.49	1 Piece(s)	Available	Same day	10	35	7.6	10	22.8	2.9	30.01~50.00	35.3	1.2	With Grinding	16.2
SGD 1.21	1 Piece(s)	Available	Same day	10	25	2.8	4	16.3	2	16.01~30.00	17.7	0.6	With Grinding	11.7
SGD 1.21	1 Piece(s)	Available	Same day	10	30	2.8	4	19.5	2	16.01~30.00	20.6	0.6	With Grinding	11.7
SGD 1.21	1 Piece(s)	Available	Same day	10	35	2.7	4	22.8	2	16.01~30.00	24	0.65	With Grinding	17.6

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Round Coil Springs-Fmax. (Allowable Deflection) = Lx35%-40%/O.D. Referenced (WM4-20)

Part Number

Basic Information

Configure

Specification/Dimensions

type

Free Length L(mm)

Inner Dia. D-2d (or D)(Ø)

Outer Dia. D (or D1)(Ø)

Height with the max. load applied ([Free Length] – [Allowable Deflection])(mm)

Spring Constant(N/mm)

Allowable Load (Configurable Range)(N)

Max. Load(N)

Wire Dia.(Ø)

End Surface Status

Solid Length(mm)

CAD

Days to Ship

Specify Alterations

Similar Part Numbers

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