■ Spring constant Type D WY
Spring constant ± 10% Diameter (D)
WM WH
φ 10 or less 0 φ 12 or more 0 50 or less ± 1.5mm 55 or more ± 2mm –0.5mm –0.8mm
WR WF
WL
WT
WM WH WB
d D
2 3 4 5 6 8
0.5{0.05}
ROUND WIRE COIL SPRINGS –WM (35% DEFLECTION)/WH (30% DEFLECTION)–
1.5 {0.15}
2.0 {0.2}
3.9{0.4} 4.9{0.5}
N/mm 0.1 {kgf/mm} {0.01} N/mm 0.2 {kgf/mm} {0.02}
Free length L
2.9{0.3}
N/mm 9.8 {kgf/mm} {1.0} N/mm 19.6 {kgf/mm} {2.0} 29.4{3.0}
N/mm 5.9 {kgf/mm} {0.6} N/mm 9.8 {kgf/mm} {1.0} N/mm 14.7 {kgf/mm} {1.5}
N/mm 0.3 {kgf/mm} {0.03}
N/mm 0.5 {kgf/mm} {0.05}
N/mm 1.0 {kgf/mm} {0.1}
N/mm 2.0 {kgf/mm} {0.2}
N/mm 2.9 {kgf/mm} {0.3}
10 12 13 14 16 18 20 22
Part Number WM13 – 60
N/mm 3.9 {kgf/mm} {0.4}
N/mm 0.5 {kgf/mm} {0.05}
N/mm 1.0 {kgf/mm} {0.1}
N/mm 2.9 {kgf/mm} {0.3}
N/mm 4.9 {kgf/mm} {0.5}
Order
29.4 {3.0}
27 Fmax.
M Material SWP–A
F = L × 75% F = L × 60% F = L × 45% F = L × 40% F = L × 40% F = L × 35% F = L × 30% F = L × 25%
Quotation
Delivery
■ WH: Fmax. (allowable deflection) = L × 30%
Part Number Type D – L WH4 – 5 ＊
Solid Height
Load N{kgf} max.
Part Number Type D – L
Part Number Type D – L
Solid Height
Solid Height
Load N{kgf} max.
Load N{kgf} max.
F max.
F max.
F max.
d
d
d
0.45 2.7 1.5 4.9{ 0.5}
WH12 – 10
WH18 – 20
1.2 6.9 3 17.7{ 1.8} 1.3 9.1 4.5 26.5{ 2.7} 1.3 9.1 6 35.3{ 3.6} 1.3 9.1 7.5 44.1{ 4.5} 1.4 11.9 9 53.0{ 5.4} 1.4 11.9 10.5 61.8{ 6.3} 1.5 15.4 12 70.6{ 7.2} 1.5 15.4 13.5 79.4{ 8.1} 1.6 20.4 15 88.3{ 9.0} 1.6 20.4 16.5 97.1{ 9.9} 1.7 26.8 18 105.9{10.8} 1.7 26.8 19.5 114.7{11.7} 1.8 35.1 21 123.6{12.6} 1.9 45.6 24 141.0{14.4} 1.3 6.2 3 29.4{ 3.0} 1.5 9.3 4.5 44.1{ 4.5} 1.6 12.3 6 58.8{ 6.0} 1.6 12.3 7.5 73.5{ 7.5} 1.7 15 9 88.3{ 9.0} 1.7 15 10.5 103.0{10.5} 1.8 19 12 117.7{12.0} 1.9 25 13.5 132.4{13.5} 1.9 25 15 147.1{15.0} 2.0 30 16.5 161.8{16.5} 2.0 30 18 176.5{18.0} 2.1 39 19.5 191.2{19.5} 2.1 39 21 205.9{21.0} 2.1 39 24 235.4{24.0} 1.6 10.4 4.5 44.1{ 4.5} 1.6 10.4 6 58.8{ 6.0} 1.6 10.4 7.5 73.5{ 7.5} 1.7 12.8 9 88.3{ 9.0} 1.7 12.8 10.5 103.0{10.5} 1.9 20 12 117.7{12.0} 1.9 20 13.5 132.4{13.5} 2.1 30.5 15 147.1{15.0} 2.1 30.5 16.5 161.8{16.5} 2.1 30.5 18 176.5{18.0} 2.2 37.4 19.5 191.2{19.5} 2.2 37.4 21 205.9{21.0} 2.3 47.2 24 235.4{24.0} 1.7 10.2 4.5 44.1{ 4.5} 1.8 12.6 6 58.8{ 6.0} 1.9 14.5 7.5 73.5{ 7.5} 1.9 14.5 9 88.3{ 9.0} 2.0 18 10.5 103.0{10.5} 2.1 21 12 117.7{12.0} 2.2 26 13.5 132.4{13.5} 2.2 26 15 147.1{15.0} 2.2 26 16.5 161.8{16.5} 2.3 32 18 176.5{18.0} 2.3 32 19.5 191.2{19.5} 2.4 38 21 205.9{21.0} 2.5 47.5 24 235.4{24.0}
2.1 12.6 6 88.3{ 9.0} 2.2 15.4 7.5 109.8{11.2} 2.2 15.4 9 132.4{13.5} 2.3 18.4 10.5 154.0{15.7} 2.4 21.6 12 176.5{18.0} 2.5 25 13.5 199.1{20.3} 2.5 25 15 220.6{22.5} 2.6 30 16.5 242.2{24.7} 2.6 30 18 264.8{27.0} 2.8 42 19.5 286.4{29.2} 2.8 42 21 308.9{31.5} 2.9 49.3 24 353.0{36.0} 3.0 57 26.1 397.2{40.5} 3.0 57 24 441.3{45.0} 2.2 12.7 6 88.3{ 9.0} 2.3 15 7.5 109.8{11.2} 2.3 15 9 132.4{13.5} 2.5 20 10.5 154.0{15.7} 2.5 20 12 176.5{18.0} 2.5 20 13.5 199.1{20.3} 2.6 22.8 15 220.6{22.5} 2.6 22.8 16.5 242.2{24.7} 2.8 30.8 18 264.8{27.0} 2.8 30.8 19.5 286.4{29.2} 3.0 42 21 308.9{31.5} 3.0 42 24 353.0{36.0} 3.2 56.8 27 397.2{40.5} 3.2 56.8 30 441.3{45.0} 2.3 12.7 6 88.3{ 9.0} 2.5 16.7 7.5 109.8{11.2} 2.5 16.7 9 132.4{13.5} 2.6 18.2 10.5 154.0{15.7} 2.8 25 12 176.5{18.0} 2.8 25 13.5 199.1{20.3} 2.8 25 15 220.6{22.5} 3.0 33 16.5 242.2{24.7} 3.0 33 18 264.8{27.0} 3.0 33 19.5 286.4{29.2} 3.2 43 21 308.9{31.5} 3.2 43 24 353.0{36.0} 3.2 43 26.1 397.2{40.5} 3.5 64.4 26 441.3{45.0} 2.8 16.8 9 132.4{13.5} 2.8 16.8 10.5 154.0{15.7} 2.9 18.8 12 176.5{18.0} 2.9 19.4 13.5 199.1{20.3} 3.2 25.5 15 220.6{22.5} 3.2 25.5 16.5 242.2{24.7} 3.5 35.5 18 264.8{27.0} 3.5 35.5 19.5 286.4{29.2} 3.5 35.5 21 308.9{31.5} 3.5 35.5 24 353.0{36.0} 3.5 35.5 27 397.2{40.5} 4.0 68 30 441.3{45.0}
■ WM: Fmax. (allowable deflection) = L × 35%
10 ＊
0.45 2.7 3
8.8{ 0.9}
15 20 25 30 35 40 45 50 55 60 65 70 80
25 30 35 40 45 50 55 60 65 70 80
Part Number Type D – L
Part Number Type D – L WM3 – 5 ＊
Part Number Type D – L
Solid Height
Load N{kgf} max.
Solid Height
Solid Height
Load N{kgf} max.
Load N{kgf} max.
F max.
F max.
F max.
0.55 5.8 4.5 13.7{ 1.4} 0.6 8.4 6 17.7{ 1.8} 0.65 12.4 7.5 22.6{ 2.3} 0.65 12.4 9 26.5{ 2.7} 0.6 3.3 1.5 8.8{ 0.9} 0.7 5.5 3 17.7{ 1.8} 0.75 7.5 4.5 26.5{ 2.7} 0.75 7.5 6 35.3{ 3.6} 0.85 13.6 7.5 44.1{ 4.5} 0.85 13.6 7.5 44.3{ 4.5} 0.9 17.1 8.8 51.6{ 5.3} 0.9 17.1 8.8 51.9{ 5.3} 0.65 3.3 1.5 8.8{ 0.9} 0.75 5.2 3 17.7{ 1.8} 0.8 6.4 4.5 26.5{ 2.7} 0.9 9.9 6 35.3{ 3.6} 0.9 9.9 7.5 44.1{ 4.5} 1.0 16 9 53.0{ 5.4} 1.0 16 10.5 61.8{ 6.3} 1.1 25 12 70.6{ 7.2} 1.1 25 11.3 66.7{ 6.8} 1.2 39.6 10 58.8{ 6.0} 1.2 39.6 14.5 85.3{ 8.7} 1.2 39.6 14 82.4{ 8.4} 1.2 39.6 14 82.4{ 8.4} 1.2 39.6 15 88.3{ 9.0} 0.9 5.4 3 17.7{ 1.8} 1.0 8 4.5 26.5{ 2.7} 1.1 11.5 6 35.3{ 3.6} 1.1 11.5 7.5 44.1{ 4.5} 1.2 16.8 9 53.0{ 5.4} 1.2 16.8 10.5 61.8{ 6.3} 1.2 16.8 12 70.6{ 7.2} 1.3 24.7 13.5 79.4{ 8.1} 1.3 24.7 15 88.3{ 9.0} 1.4 35 16.5 97.1{ 9.9} 1.4 35 18 105.9{10.8} 1.4 35 17 100.0{10.2} 1.4 35 19 111.8{11.4} 1.0 5.4 3 17.7{ 1.8} 1.1 7 4.5 26.5{ 2.7} 1.2 9.6 6 35.3{ 3.6} 1.2 9.6 7.5 44.1{ 4.5} 1.3 13.9 9 53.0{ 5.4} 1.4 18 10.5 61.8{ 6.3} 1.4 18 12 70.6{ 7.2} 1.5 25 13.5 79.4{ 8.1} 1.5 25 15 88.3{ 9.0} 1.5 25 16.5 97.1{ 9.9} 1.5 25 18 105.9{10.8} 1.6 35 19.5 114.7{11.7} 1.6 35 21 123.6{12.6} 1.7 45.9 24 141.0{14.4}
15 20 25 30 10 15 20 25
d
d
d
WM10 – 10
WM16 – 15
0.35 2.5 1.8 3.4{0.4} 0.38 3.3 3.5 6.9{0.7}
0.9 5.2 3.5 9.8 {1.0} 1.0 7.7 5.2 14.7 {1.5} 1.0 7.7 7 20.6 {2.1}
1.3 7.8 5.2 14.7{ 1.5}
10 ＊ 15 ＊ 20 ＊
1.4 9.8 7
20.6{ 2.1}
15 20 25 30 35 40 45 50 55 60 65 70 80
20 25 30 35 40 45 50 55 60 65 70 80 90
0.45 7
5.3 10.3{1.1}
1.5 12.5 8.7 25.5{ 2.6} 1.5 12.5 10.5 30.4{ 3.1} 1.6 15 12.2 35.3{ 3.6}
WH5 – 5 ＊
0.5 11.5 7 13.7{1.4} 0.5 11.5 7.5 14.7{1.5} 0.55 20.4 9 17.7{1.8} 0.4 2.3 1.7 3.9{0.4} 0.45 3.4 3.5 6.9{0.7} 0.5 5.1 5.2 10.8{1.1} 0.55 7.7 7 13.7{1.4} 0.6 11.7 8.7 17.7{1.8} 0.6 11.7 10.5 20.6{2.1} 0.65 17.6 12.2 24.0{2.5} 0.65 17.6 12 23.5{2.4} 0.5 2.8 1.7 4.9{0.5} 0.6 4.2 3.5 9.8{1.0} 0.65 6.5 5.2 14.7{1.5} 0.65 6.5 7 20.6{2.1} 0.7 9.1 8.7 25.5{2.6} 0.75 12.7 10.5 30.4{3.1} 0.8 17.4 12.2 35.3{3.6} 0.85 23.8 14 41.2{4.2} 0.85 23.8 15.8 46.1{4.7} 0.9 23.8 15 43.5{4.5} 0.9 30 16.5 49.0{5.0} 0.9 30 18 53.0{5.4} 0.9 30 17.6 52.0{5.3} 0.9 30 19.6 58.8{6.0} 0.55 2.8 1.7 4.9{0.5} 0.65 4.7 3.5 9.8{1.0}
1.1 11
8.7 25.5 {2.6}
1.1 11 10.5 30.4 {3.1} 1.2 16.2 12.2 35.3 {3.6} 1.2 16.2 14 41.2 {4.2} 1.3 22.1 15.8 46.1 {4.7} 1.3 22.1 17.5 51.0 {5.2} 1.3 22.1 19.2 55.9 {5.7} 1.4 32.1 21 61.8 {6.3} 1.4 32.1 22.7 64.7 {6.6} 1.4 32.1 24.5 71.6 {7.3} 1.4 32.2 28 82.4 {8.4} 1.0 5.5 3.5 10.3 {1.1} 1.1 7.4 5.2 14.7 {1.5} 1.1 7.4 7 20.6 {2.1} 1.1 7.4 8.7 25.5 {2.6} 1.2 10.2 10.5 30.4 {3.1} 1.2 10.2 12.2 35.3 {3.6} 1.3 14.3 14 41.2 {4.2} 1.3 14.3 15.8 46.1 {4.7} 1.3 14.3 17.5 51.0 {5.2} 1.4 19.6 19.2 55.9 {5.7} 1.4 19.6 21 61.8 {6.3} 1.5 26.3 22.7 64.7 {6.6} 1.5 26.3 24.5 71.6 {7.3} 1.6 36.8 28 82.4 {8.4}
(25) (30)
1.6 15 14
41.2{ 4.2}
WM4 – 5 ＊
1.7 20.4 15.8 46.1{ 4.7} 1.7 20.4 17.5 51.0{ 5.2} 1.8 27 19.2 55.9{ 5.7}
10 ＊ 15 ＊ 20 ＊ 25 ＊
(30) (35) (40)
1.8 27 21
61.8{ 6.3}
(90)
1.8 27 22.7 64.7{ 6.6} 1.8 27 24.5 71.6{ 7.3}
30* 35*
(100)
1.8 27 28
82.4{ 8.4}
WH6 – 5 ＊
WH13 – 10
WH20 – 20
1.9 34.2 31.5 92.7{ 9.5}
(40)
10 15 20 25 30 35 40
15 20 25 30 35 40 45 50 55 60 65 70 80
25 30 35 40 45 50 55 60 65 70 80 90
WM5 – 5 ＊
WM12 – 10
WM18 – 20
1.7 11.9 7
34.3{ 3.5}
10 ＊ 15 ＊ 20 ＊ 25 ＊
1.8 14.4 8.7 42.2{ 4.3} 1.8 14.4 10.5 51.0{ 5.2} 1.8 14.4 12.2 59.8{ 6.1}
15 20 25 30 35 40 45 50 55 60 65 70 80
25 30 35 40 45 50 55 60 65 70 80 90
1.8 14.4 14
68.6{ 7.0}
2.0 22 15.8 77.5{ 7.9} 2.0 22 17.5 85.3{ 8.7} 2.0 22 19.2 94.1{ 9.6} 2.0 22 21 103.0{10.5} 2.2 34.1 22.7 110.8{11.3} 2.2 34.1 24.5 119.6{12.2} 2.2 34.1 28 137.3{14.0} 2.3 41.4 31.5 154.0{15.7} 2.3 41.4 35 171.6{17.5}
30* 35*
40 ＊ 45 ＊
(45) (50) (55) (60) (65) (70)
(50) (55) (60) (65) (70)
100
WM6 – 5 ＊
100
WM13 – 10
WM20 – 20
1.0 5
3.5 10.3 {1.1}
1.8 11.7 7
34.3{ 3.5}
10 ＊ 15 ＊ 20 ＊ 25 ＊
1.2 8.4 5.2 14.7 {1.5} 1.3 11.7 7 20.6 {2.1} 1.3 11.7 8.7 25.5 {2.6} 1.4 14.5 10.5 30.4 {3.1} 1.4 14.5 12.2 35.3 {3.6} 1.4 14.5 14 41.2 {4.2} 1.4 14.5 15.8 46.1 {4.7} 1.4 14.5 17.5 51.0 {5.2} 1.5 22.5 19.2 55.9 {5.7} 1.5 22.5 21 61.8 {6.3} 1.6 28.8 22.7 64.7 {6.6} 1.6 28.8 24.5 71.6 {7.3} 1.7 37.4 28 82.4 {8.4} 1.7 37.4 31.5 92.9 {9.5} 1.2 7.5 5.2 14.7 {1.5} 1.3 9.8 7 20.6 {2.1} 1.4 13.3 8.7 25.5 {2.6} 1.4 13.3 10.5 30.4 {3.1} 1.4 13.3 12.2 35.3 {3.6} 1.4 13.3 14 41.2 {4.2} 1.5 17.3 15.8 46.1 {4.7} 1.5 17.3 17.5 51.0 {5.2} 1.5 17.3 19.2 55.9 {5.7} 1.6 23.2 21 61.8 {6.3} 1.6 23.2 22.7 64.7 {6.6} 1.7 30.6 24.5 71.6 {7.3} 1.7 30.6 28 82.4 {8.4} 1.8 39.6 31.5 92.7 {9.5}
1.8 11.7 8.7 42.2{ 4.3} 1.9 14.3 10.5 51.0{ 5.2} 1.9 14.3 12.2 59.8{ 6.1}
15 20 25 30 35 40 45 50 55 60 65 70 80 90
25 30 35 40 45 50 55 60 65 70 80 90
WH8 – 10
WH14 – 15
WH22 – 20
0.75 8 0.75 8
5.2 14.7{1.5} 7 20.6{2.1}
15 20 25 30 35 40 45 50 55 60
20 25 30 35 40 45 50 55 60 65 70 80
25 30 35 40 45 50 55 60 65 70 80
0.85 13.6 8.7 25.5{2.6} 0.85 13.6 10.5 30.4{3.1} 0.9 18 12.2 35.3{3.6} 0.9 18 14 41.2{4.2} 0.9 18 15.8 46.1{4.7} 0.85 18 17.5 51.0{5.2} 1.0 31 19.2 55.9{5.7} 1.0 31 18 53.0{5.4} 1.0 31 18.8 54.9{5.6} 1.1 47.3 20 58.8{6.0} 1.1 48.4 22.4 65.9{6.7} 0.75 4.2 3.5 9.8{1.0} 0.9 8.5 5.2 14.7{1.5} 0.9 8.5 7 20.6{2.1} 0.9 8.5 8.7 25.5{2.6} 0.9 8.5 10.5 30.4{3.1} 1.0 13 12.2 35.3{3.6} 1.0 13 14 41.2{4.2} 1.1 19.8 15.8 46.1{4.7} 1.1 19.8 17.5 51.0{5.2} 1.2 31.2 19.2 55.9{5.7} 1.2 31.2 21 61.8{6.3} 1.2 31.2 22.7 64.7{6.6} 1.2 31.2 24.5 71.6{7.3} 1.3 44.2 28 82.4{8.4}
1.9 14.3 14
68.6{ 7.0}
2.0 17 15.8 77.5{ 7.9} 2.0 17 17.5 85.3{ 8.7} 2.2 24.8 19.2 94.1{ 9.6} 2.2 24.8 21 103.0{10.5} 2.2 24.8 22.7 110.8{11.3} 2.2 24.8 24.5 119.6{12.2} 2.4 36 28 137.3{14.0} 2.4 36 31.5 154.0{15.7} 2.4 36 35 171.6{17.5}
30* 35*
40 ＊ 45 ＊ 50 ＊ 55 ＊
(60) (65) (70) (80)
100
WM22 – 20
1.9 12 2.0 14
7
34.3{ 3.5}
(65) (70)
WM8 – 10 ＊
8.7 42.2{ 4.3}
WM14 – 15
25 30 35 40 45 50 55 60 65 70 80 90
(90)
15 ＊ 20 ＊ 25 ＊
2.0 14 10.5 51.0{ 5.2} 2.0 14 12.2 59.8{ 6.1}
20 25 30 35 40 45 50 55 60 65 70 80 90
WH10 – 10
WH16 – 15
(100)
15 20 25 30 35 40 45 50 55 60 65 70 80
20 25 30 35 40 45 50 55 60 65 70 80
WH27 – 30
2.0 14 14
68.6{ 7.0}
2.3 23 15.8 77.5{ 7.9} 2.3 23 17.5 85.3{ 8.7} 2.3 23 19.2 94.1{ 9.6} 2.3 23 21 103.0{10.5} 2.4 30 22.7 110.8{11.3} 2.4 30 24.5 119.6{12.2} 2.4 30 28 137.3{14.0} 2.6 40 31.5 154.0{15.7} 2.6 40 35 171.6{17.5} 2.3 14 10.5 51.0{ 5.2} 2.4 17 12.2 59.8{ 6.1}
30* 35*
35 40 45 50 55 60 65 70 80 90
40 ＊ 45 ＊ 50 ＊ 55 ＊ 60 ＊ 65 ＊ 70 ＊ 80 ＊
100
WM27 – 30
35 40 45 50 55 60 65 70 80 90
● Load calculation method: Load = Spring constant × Deflection (International Unit) N = N/mm × Fmm kgf = kgf/mm × Fmm (kgf = N × 0.101972) e The solid height values are for reference only. There may be some dispersions depending on the lot. e Operation frequency: 1 million shots e Product guide d P.113 9 e Instructions and notes for coil springs d P.1142
e (L) size allowable deflection
2.4 17 14
68.6{ 7.0}
WM3 – 25 Fmax. = L × 30% WM3 – 30 Fmax. = L × 30% WM4 – 40 Fmax. = L × 30% WM5 – 50 Fmax. = L × 30% WM5 – 55 Fmax. = L × 30% WM5 – 60 Fmax. = L × 30% WM5 – 65 Fmax. = L × 27% WM5 – 70 Fmax. = L × 28% WM6 – 60 Fmax. = L × 30% WM6 – 65 Fmax. = L × 29% WM6 – 70 Fmax. = L × 28% WM6 – 80 Fmax. = L × 28% e No grinding on both ends of WM type springs marked with ＊ .
2.4 18 15.8 77.5{ 7.9} 2.6 23 17.5 85.3{ 8.7} 2.6 23 19.2 94.1{ 9.6} 2.6 23 21 103.0{10.5} 2.8 31 22.7 110.8{11.3} 2.8 31 24.5 119.6{12.2} 2.8 31 28 137.3{14.0} 3.0 43.5 31.5 154.0{15.7} 3.0 43.5 35 171.6{17.5}
100
● Load calculation method: Load = Spring constant × Deflection (International Unit) N = N/mm × Fmm kgf = kgf/mm × Fmm (kgf = N × 0.101972) e The solid height values are for reference only. There may be some dispersions depending on the lot. e Operation frequency: 1 million shots e Product guide d P.1139 e Instructions and notes for coil springs d P.1142
e (L) size allowable deflection
WH5 – 30 Fmax. = L × 25% WH5 – 35 Fmax. = L × 25% WH5 – 40 Fmax. = L × 22% WH6 – 45 Fmax. = L × 25% WH6 – 50 Fmax. = L × 20%
WH6 – 55 Fmax. = L × 26% WH6 – 60 Fmax. = L × 23% WH6 – 65 Fmax. = L × 21% WH6 – 70 Fmax. = L × 21% WH8 – 65 Fmax. = L × 26%
Fmax. = L × 27% Fmax. = L × 29% Fmax. = L × 24% Fmax. = L × 29% Fmax. = L × 26%
WH 8 – 70 WH18 – 90 WH18 – 100 WH22 – 90 WH22 – 100
100
e No grinding on both ends of WH type springs marked with ＊ .
1153
1154
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