Load ± 10% Squareness 2° or less Free length L 50 or less ± 0.5mm 55 or more ± 1% Coil direction Right
－ 0.7 0
※1
D
＋ 0.7 ＋ 0.1
Light
Load guide
Heavy
d
COIL SPRINGS −MEDIUM LOAD SWM−
S W C
S W F
S W L
S W M
S W H
S W B
S W G
※ 1 D7 0 is 0
－ 1.0
Spring constant N/mm{kgf/mm}
Spring constant N/mm{kgf/mm}
Spring constant N/mm{kgf/mm}
Spring constant N/mm{kgf/mm}
F = L × 25.6%F = L × 28.8% F = L × 32% Part Number Fmm Load N{kgf} Fmm Load N{kgf} Fmm Load N{kgf} Type D–L
F = L × 25.6%F = L × 28.8% F = L × 32% Part Number Fmm Load N{kgf} Fmm Load N{kgf} Fmm Load N{kgf} Type D–L
F = L × 25.6%F = L × 28.8% F = L × 32% Part Number Fmm Load N{kgf} Fmm Load N{kgf} Fmm Load N{kgf} Type D–L
F = L × 25.6%F = L × 28.8% F = L × 32% Part Number Fmm Load N{kgf} Fmm Load N{kgf} Fmm Load N{kgf} Type D–L
D d L
D d L
D d L
D d L
SWM6 –15
SWM40–40
SWM25–25
SWM16–20
15 20.4{2.08} 3.8 20 15.3{1.56} 5.1 25 12.3{1.25} 6.4 30 10.2{1.04} 7.7 35 8.8{0.89} 9.0 40 7.7{0.78} 10.2 45 6.8{0.69} 11.5 50 6.1{0.63} 12.8 55 5.6{0.57} 14.1 60 5.1{0.52} 15.4 10 42.9{4.37} 2.6 15 28.6{2.91} 3.8 20 21.5{2.18} 5.1 25 17.2{1.75} 6.4 30 14.3{1.46} 7.7 35 12.2{1.25} 9.0 40 10.7{1.09} 10.2 45 9.5{0.97} 11.5 50 8.6{0.87} 12.8 55 7.8{0.79} 14.1 60 7.1{0.73} 15.4 65 6.6{0.67} 16.6 70 6.1{0.62} 17.9 75 5.7{0.58} 19.2 80 5.4{0.55} 20.5 10 61.3{6.25} 2.6 15 40.9{4.17} 3.8 20 30.6{3.13} 5.1 25 24.5{2.50} 6.4 30 20.4{2.08} 7.7 35 17.5{1.79} 9.0 40 15.3{1.56} 10.2 45 13.6{1.39} 11.5 50 12.3{1.25} 12.8 55 11.1{1.14} 14.1 60 10.2{1.04} 15.4 65 9.4{0.96} 16.6 70 8.8{0.89} 17.9 75 8.2{0.83} 19.2 80 7.7{0.78} 20.5 90 6.8{0.69} 23.0 15 59.2{6.04} 3.8 20 44.4{4.53} 5.1 25 35.5{3.63} 6.4 30 29.6{3.02} 7.7 35 25.4{2.59} 9.0 40 22.2{2.27} 10.2 45 19.7{2.01} 11.5 50 17.8{1.81} 12.8 55 16.2{1.65} 14.1 60 14.8{1.51} 15.4 65 13.7{1.39} 16.6 70 12.7{1.29} 17.9 75 11.8{1.21} 19.2 80 11.1{1.13} 20.5 90 9.9{1.01} 23.0 20 59.8{6.09} 5.1 25 47.9{4.88} 6.4 30 39.9{4.08} 7.7 35 34.2{3.48} 9.0 40 29.9{3.05} 10.2 45 26.6{2.71} 11.5 50 23.9{2.44} 12.8 55 21.8{2.22} 14.1 60 19.9{2.03} 15.4 65 18.4{1.88} 16.6 70 17.1{1.74} 17.9 75 16.0{1.63} 19.2 80 15.0{1.52} 20.5 90 13.3{1.35} 23.0 100 12.0{1.22} 25.6
20 78.1{ 7.97} 25 62.5{ 6.38} 30 52.1{ 5.31} 35 44.7{ 4.55}
5.8 7.2 8.6
6.4 8.0 9.6
25 153 {15.6 } 30 128 {13.0 } 35 109 {11.2 }
6.4 7.7 9.0
7.2 8.6
8.0 9.6
4.3 5.8 7.2 8.6
4.8 6.4 8.0 9.6
5.1 6.4 7.7 9.0
40 245 {25.0 } 10.2 45 218 {22.2 } 11.5 50 196 {20.0 } 12.8 55 178 {18.2 } 14.1 60 163 {16.7 } 15.4 65 151 {15.4 } 16.6 70 140 {14.3 } 17.9 75 131 {13.3 } 19.2 80 123 {12.5 } 20.5 90 109 {11.1 } 23.0 100 98.1{10.0 } 25.6 125 78.5{ 8.00} 32.0 150 65.4{ 6.67} 38.4 175 56.0{ 5.71} 44.8 200 49.0{ 5.00} 51.2 225 43.6{ 4.44} 57.6 250 39.2{ 4.00} 64.0 275 35.7{ 3.64} 70.4 300 32.7{ 3.33} 76.8 50 306 {31.2 } 12.8 55 278 {28.4 } 14.1 60 255 {26.0 } 15.4 65 236 {24.0 } 16.6 70 219 {22.3 } 17.9 75 204 {20.8 } 19.2 80 191 {19.5 } 20.5 90 170 {17.3 } 23.0 100 153 {15.6 } 25.6 125 123 {12.5 } 32.0 150 102 {10.4 } 38.4 175 87.5{ 8.92} 44.8 200 76.6{ 7.81} 51.2 225 68.1{ 6.94} 57.6 250 61.3{ 6.25} 64.0 275 55.7{ 5.68} 70.4 300 51.0{ 5.20} 76.8 350 43.8{ 4.46} 89.6 60 368 {37.5 } 15.4 70 315 {32.1 } 17.9 80 276 {28.1 } 20.5 90 245 {25.0 } 23.0 100 221 {22.5 } 25.6 125 176 {18.0 } 32.0 150 147 {15.0 } 38.4 175 126 {12.8 } 44.8 200 110 {11.2 } 51.2 225 98.0{10.0 } 57.6 250 88.2{ 8.99} 64.0 275 80.2{ 8.18} 70.4 300 73.5{ 7.49} 76.8 350 63.0{ 6.42} 89.6 70 372 {37.9 } 17.9 80 325 {33.2 } 20.5 90 289 {29.5 } 23.0 100 260 {26.5 } 25.6 125 208 {21.2 } 32.0 150 174 {17.7 } 38.4 175 149 {15.2 } 44.8 200 130 {13.3 } 51.2 250 104 {10.6 } 64.0 300 86.8{ 8.85} 76.8 350 74.4{ 7.58} 89.6
11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4 57.6 64.8 72.0 79.2 86.4 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4
12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0 64.0 72.0 80.0 88.0 96.0 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0
25 30 35 40 45 50 55 60 65 70 75 80 90 25 30 35 40 45 50 55 60 65 70 75 80 90 25 30 35 40 45 50 55 60 65 70 75 80 90
30 35 40 45 50 55 60 65 70 75 80 90
20 25 30 35 40 45 50 55 60 15 20 25 30 35 40 45 50 55 60 65 70 75 80 15 20 25 30 35 40 45 50 55 60 65 70 75 80 90 20 25 30 35 40 45 50 55 60 65 70 75 80 90 25 30 35 40 45 50 55 60 65 70 75 80 90
45 50 55 60 65 70 75 80 90
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0
40 95.7{ 9.77} 10.2 45 85.1{ 8.68} 11.5 50 76.6{ 7.81} 12.8 55 69.6{ 7.10} 14.1 60 63.8{ 6.51} 15.4 65 58.9{ 6.01} 16.6 70 54.7{ 5.58} 17.9 75 51.0{ 5.21} 19.2 80 47.9{ 4.88} 20.5 90 42.5{ 4.34} 23.0 100 38.3{ 3.91} 25.6 125 30.6{ 3.13} 32.0 150 25.5{ 2.60} 38.4 175 21.9{ 2.23} 44.8
79 {8.0}
88 {9.0}
98 {10}
40 39.1{ 3.98} 10.2 45 34.7{ 3.54} 11.5 50 31.3{ 3.19} 12.8 55 28.4{ 2.90} 14.1 60 26.0{ 2.66} 15.4 65 24.0{ 2.45} 16.6 70 22.3{ 2.28} 17.9 75 20.8{ 2.13} 19.2 80 19.5{ 1.99} 20.5 90 17.4{ 1.77} 23.0 100 15.6{ 1.59} 25.6
10.1 11.5 13.0 14.4 15.8 17.3
11.2 12.8 14.4 16.0 17.6 19.2
6 3
400 {41}
450 {46}
500 {51}
16 8
981 {100}
1103 {113}
1225 {125}
25 12.5
2510 {256}
2824 {288}
3138 {320}
40 20
SWM8 –10
100 125 150 175 200 225 250 275 300
2.9 4.3 5.8 7.2 8.6
3.2 4.8 6.4 8.0 9.6
100 125 150 175
100
SWM18–20
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6
20 99.6{10.2 } 25 79.7{ 8.13} 30 66.4{ 6.77} 35 56.9{ 5.80}
5.1 6.4 7.7 9.0
5.8 7.2 8.6
6.4 8.0 9.6
110 {11}
123 {13}
137 {14}
SWM27–25
8 4
25 179 {18.3 } 30 149 {15.2 } 35 128 {13.0 }
6.4 7.7 9.0
7.2 8.6
8.0 9.6
30 35 40 45 50 55 60 65 70 75 80 90
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0
SWM50–50
40 49.8{ 5.08} 10.2 45 44.3{ 4.51} 11.5 50 39.8{ 4.06} 12.8 55 36.2{ 3.69} 14.1 60 33.2{ 3.39} 15.4 65 30.6{ 3.13} 16.6 70 28.5{ 2.90} 17.9 75 26.6{ 2.71} 19.2 80 24.9{ 2.54} 20.5 90 22.1{ 2.26} 23.0 100 19.9{ 2.03} 25.6
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0
55 60 65 70 75 80 90
40 112 {11.4 } 10.2 45 99.4{10.1 } 11.5 50 89.4{ 9.13} 12.8 55 81.3{ 8.30} 14.1 60 74.5{ 7.60} 15.4 65 68.8{ 7.02} 16.6 70 63.9{ 6.52} 17.9 75 59.6{ 6.08} 19.2 80 55.9{ 5.70} 20.5 90 49.7{ 5.07} 23.0 100 44.7{ 4.56} 25.6 125 35.8{ 3.65} 32.0 150 29.8{ 3.04} 38.4 175 25.6{ 2.61} 44.8
510 {52}
574 {59}
637 {65}
18 9
1145 {117}
1288 {131}
1431 {146}
SWM10–10
27 13.5
2.9 4.3 5.8 7.2 8.6
3.2 4.8 6.4 8.0 9.6
3920 {400}
4410 {450}
4900 {500}
100 125 150 175 200 225 250 275 300 350
50 25
100
SWM20–20
100 125 150 175
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8
20 123 {12.5 } 25 98.0{10.0 } 30 81.7{ 8.33} 35 70.0{ 7.14}
5.1 6.4 7.7 9.0
5.8 7.2 8.6
6.4 8.0 9.6
57.6 64.8 72.0 79.2 86.4 17.3 20.2 23.0 25.9 28.8 36.0 43.2 50.4 100.8 57.6 64.8 72.0 79.2 86.4 20.2 23.0 25.9 28.8 36.0 43.2 50.4 57.6 100.8
64.0 72.0 80.0 88.0 96.0 19.2 22.4 25.6 28.8 32.0 40.0 48.0 56.0 112.0 64.0 72.0 80.0 88.0 96.0 22.4 25.6 28.8 32.0 40.0 48.0 56.0 64.0 112.0
157 {16}
176 {18}
196 {20}
10 5
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0
SWM30–25
40 61.3{ 6.25} 10.2 45 54.4{ 5.55} 11.5 50 49.0{ 5.00} 12.8 55 44.5{ 4.55} 14.1 60 40.8{ 4.17} 15.4 65 37.7{ 3.85} 16.6 70 35.0{ 3.57} 17.9 75 32.7{ 3.33} 19.2 80 30.6{ 3.13} 20.5 90 27.2{ 2.78} 23.0 100 24.5{ 2.50} 25.6 125 19.6{ 2.00} 32.0 150 16.3{ 1.67} 38.4
25 221 {22.5 } 30 184 {18.8 } 35 158 {16.1 }
6.4 7.7 9.0
7.2 8.6
8.0 9.6
30 35 40 45 50 55 60 65 70 75 80 90
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4 57.6 11.5 12.9 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2 50.4 57.6
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0 64.0 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0 56.0 64.0
SWM60–60
40 138 {14.1 } 10.2 45 123 {12.5 } 11.5 50 110 {11.3 } 12.8 55 100 {10.2 } 14.1 60 91.9{ 9.38} 15.4 65 84.9{ 8.65} 16.6 70 78.8{ 8.04} 17.9 75 73.5{ 7.50} 19.2 80 69.0{ 7.03} 20.5 90 61.3{ 6.25} 23.0 100 55.2{ 5.63} 25.6 125 44.1{ 4.50} 32.0 150 36.8{ 3.75} 38.4 175 31.5{ 3.21} 44.8 200 27.6{ 2.81} 51.2 40 188 {19.1 } 10.2 45 167 {17.0 } 11.5 50 150 {15.3 } 12.8 55 136 {13.9 } 14.1 60 125 {12.8 } 15.4 65 115 {11.8 } 16.6 70 107 {10.9 } 17.9 75 100 {10.2 } 19.2 80 93.8{ 9.57} 20.5 90 83.4{ 8.51} 23.0 100 75.0{ 7.66} 25.6 125 60.0{ 6.13} 32.0 150 50.0{ 5.10} 38.4 175 42.9{ 4.38} 44.8 200 37.5{ 3.83} 51.2
628 {64}
706 {72}
784 {80}
70 80 90
20 10
SWM12–15
100 125 150 175 200 225 250 275 300 350
4.3 5.8 7.2 8.6
4.8 6.4 8.0 9.6
1412 {144}
1589 {162}
1765 {180}
30 15
5645 {576}
6350 {648}
7056 {720}
60 30
100 125 150
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8
SWM22–25
100 125 150 175 200
25 119 {12.1 } 30 99.1{10.1 } 35 84.9{ 8.66}
6.4 7.7 9.0
7.2 8.6
8.0 9.6
227 {23}
256 {26}
284 {29}
30 35 40 45 50 55 60 65 70 75 80 90
12 6
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8 36.0 43.2
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0 40.0 48.0
40 74.3{ 7.58} 10.2 45 66.1{ 6.74} 11.5 50 59.5{ 6.06} 12.8 55 54.0{ 5.51} 14.1 60 49.5{ 5.05} 15.4 65 45.7{ 4.66} 16.6 70 42.5{ 4.33} 17.9 75 39.6{ 4.04} 19.2 80 37.2{ 3.79} 20.5 90 33.0{ 3.37} 23.0 100 29.7{ 3.03} 25.6 125 23.8{ 2.43} 32.0 150 19.8{ 2.02} 38.4
SWM70–70
SWM35–40
80 90
45 50 55 60 65 70 75 80 90
761 {78}
856 {87}
951 {97}
100 125 150 175 200 250 300 350
22 11
6664 {680}
7497 {764}
8330 {850}
SWM14–20
70 38.5
5.8 7.2 8.6
6.4 8.0 9.6
1921 {196}
2161 {220}
2401 {245}
72.0 86.4
80.0 96.0
35 17.5
10.1 11.5 13.0 14.4 15.8 17.3 18.7 20.2 21.6 23.0 25.9 28.8
11.2 12.8 14.4 16.0 17.6 19.2 20.8 22.4 24.0 25.6 28.8 32.0
100 125 150
100.8
112.0
100 125 150 175 200
Operation frequency 1 million times 500,000 times 300,000 times
306 {31}
345 {35}
383 {39}
14 7
Operation frequency 1 million times 500,000 times 300,000 times
Quotation
(NT) – Part Number NT – SWM30–40
Part Number SWM20–80
Alterations
Order
Operation frequency 1 million times 500,000 times 300,000 times
Alterations Code
Spec.
Quotation
M Material Oil tempered wire for spring ● Load calculation method:
Delivery
Paint peeling process d P.1147 Peel the coating by shot peening the coil springs.
Load = Spring constant × Deflection
100
(International unit) N = N/mm × Fmm kgf = kgf/mm × Fmm (kgf = N × 0.101972)
Operation frequency 1 million times 500,000 times 300,000 times
NT
e Since the springs which have undergone the painting peeling are easy to rust, be careful in handling. Rusting may lead to premature damaging. e Compared to painted springs, there may be some dispersions in terms of load, etc. depending on the lot.
No painting
e Product guide d P.1139
e load graph d P.1141
e Instructions and notes for coil springs d P.1142 e For information on the D dimension and the counterbore hole, and also the d dimension and the shaft d P.1142
1175
1176
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