Load ± 10% Squareness 2° or less Free length L 50 or less ± 0.5mm 55 or more ± 1% Coil direction right
0
D
－ 0.7
Light
Load guide
Heavy
＋ 0.1 ＋ 0.7
d
COIL SPRINGS −EXTRA MINIMAL LOAD SWC−
S W C
S W F
S W L
S W M
S W H
S W B
S W G
Spring constant N/mm {kgf/mm}
Spring constant N/mm {kgf/mm}
Spring constant N/mm {kgf/mm}
F = L × 50%F = L × 55%F = L × 60% Part Number Fmm Load N {kgf} Fmm Load N {kgf} Fmm Load N {kgf} Type D–L
F = L × 50%F = L × 55%F = L × 60% Part Number Fmm Load N {kgf} Fmm Load N {kgf} Fmm Load N {kgf} Type D–L
F = L × 50%F = L × 55%F = L × 60% 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
Outside allowable range
Outside allowable range
SWC6–15
7.5
8.3
15 3.60 {0.37}
Outside allowable range
SWC16–25
SWC25–25
25 9.15 {0.93} 12.5
13.8
25 24.19 {2.47} 12.5
13.8
20 25 30 35 40
11.0 13.8 16.5 19.3 22.0
20 2.70 {0.28} 10.0 25 2.16 {0.22} 12.5 30 1.80 {0.18} 15.0 35 1.54 {0.16} 17.5 40 1.35 {0.14} 20.0
30 35 40 45 50 55 60 65 70 75 80 90
30 35 40 45 50 55 60 65 70 75 80 90
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0
30 7.63 {0.78} 15.0 35 6.54 {0.67} 17.5 40 5.72 {0.58} 20.0 45 5.08 {0.52} 22.5 50 4.58 {0.47} 25.0 55 4.16 {0.42} 27.5 60 3.81 {0.39} 30.0 65 3.52 {0.36} 32.5
30 20.16 {2.06} 15.0 35 17.28 {1.76} 17.5 40 15.12 {1.54} 20.0 45 13.44 {1.37} 22.5 50 12.09 {1.23} 25.0 55 11.00 {1.12} 27.5 60 10.08 {1.03} 30.0 65 9.30 {0.95} 32.5 70 8.64 {0.88} 35.0 75 8.06 {0.82} 37.5 80 7.56 {0.77} 40.0 90 6.72 {0.69} 45.0 100 6.05 {0.62} 50.0 125 4.84 {0.49} 62.5 150 4.03 {0.41} 75.0 175 3.46 {0.35} 87.5 200 3.02 {0.31} 100.0
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8 82.5 96.3
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0 90.0
15.0 18.0 21.0 24.0
27 {2.8}
30 {3.0}
6 3
32 {3.3}
Outside allowable range
SWC8–15
15 3.81 {0.39}
7.5
8.3
137 {14.0}
114 {11.7}
126 {12.8}
16 9.5
20 25 30 35 40 45 50 55 60 65 70 75 80
11.0 13.8 16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0
12.0 15.0 18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0
20 2.86 {0.29} 10.0 25 2.29 {0.23} 12.5 30 1.91 {0.19} 15.0 35 1.63 {0.17} 17.5 40 1.43 {0.15} 20.0 45 1.27 {0.13} 22.5 50 1.14 {0.12} 25.0 55 1.04 {0.11} 27.5 60 0.95 {0.10} 30.0 65 0.88 {0.09} 32.5 70 0.82 {0.08} 35.0 75 0.76 {0.08} 37.5 80 0.72 {0.07} 40.0
363 {37.0}
302 {30.8}
333 {33.9}
25 16
35
70 3.27 {0.33}
75 3.05 {0.31} 37.5 80 2.86 {0.29} 40.0 90 2.54 {0.26} 45.0 100 2.29 {0.23} 50.0 125 1.83 {0.19} 62.5
34 {3.5}
29 {2.9}
31 {3.2}
8 4.6
100 125
100 125 150 175 200
Outside allowable range
SWC18–25
25 10.46 {1.07} 12.5
13.8
105.0 120.0
30 35 40 45 50 55 60 65 70 75 80 90
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0
30 8.72 {0.89} 15.0 35 7.47 {0.76} 17.5 40 6.54 {0.67} 20.0 45 5.81 {0.59} 22.5 50 5.23 {0.53} 25.0 55 4.75 {0.48} 27.5 60 4.36 {0.44} 30.0 65 4.02 {0.41} 32.5 70 3.74 {0.38} 35.0 75 3.49 {0.36} 37.5 80 3.27 {0.33} 40.0 90 2.91 {0.30} 45.0 100 2.62 {0.27} 50.0 125 2.09 {0.21} 62.5
110.0
Outside allowable range
SWC27–25
25 28.11 {2.87} 12.5
13.8
30 35 40 45 50 55 60 65 70 75 80 90
30 23.43 {2.39} 15.0 35 20.08 {2.05} 17.5 40 17.57 {1.79} 20.0 45 15.62 {1.59} 22.5 50 14.06 {1.43} 25.0 55 12.78 {1.30} 27.5 60 11.71 {1.19} 30.0 65 10.81 {1.10} 32.5 70 10.04 {1.02} 35.0 75 9.37 {0.96} 37.5 80 8.79 {0.90} 40.0 90 7.81 {0.80} 45.0 100 7.03 {0.72} 50.0 125 5.62 {0.57} 62.5 150 4.69 {0.48} 75.0 175 4.02 {0.41} 87.5 200 3.51 {0.36} 100.0
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8 82.5 96.3
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0 90.0
Outside allowable range
SWC10–15
15 6.10 {0.62}
7.5
8.3
20 25 30 35 40 45 50 55 60 65 70 75 80 90
11.0 13.8 16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5
12.0 15.0 18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0
20 4.58 {0.47} 10.0 25 3.66 {0.37} 12.5 30 3.05 {0.31} 15.0 35 2.62 {0.27} 17.5 40 2.29 {0.23} 20.0 45 2.03 {0.21} 22.5 50 1.83 {0.19} 25.0 55 1.66 {0.17} 27.5 60 1.53 {0.16} 30.0 65 1.41 {0.14} 32.5 70 1.31 {0.13} 35.0 75 1.22 {0.12} 37.5 80 1.14 {0.12} 40.0 90 1.02 {0.10} 45.0
157 {16.0}
131 {13.3}
144 {14.7}
18 11
422 {43.0}
351 {35.8}
387 {39.4}
27 17.5
46 {4.7}
50 {5.1}
55 {5.6}
10 5.8
100 125
Outside allowable range
SWC20–25
25 14.38 {1.47} 12.5
13.8
100 125 150 175 200
30 35 40 45 50 55 60 65 70 75 80 90
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8 82.5
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0 90.0
30 11.99 {1.22} 15.0 35 10.27 {1.05} 17.5 40 8.99 {0.92} 20.0 45 7.99 {0.81} 22.5 50 7.19 {0.73} 25.0 55 6.54 {0.67} 27.5 60 5.99 {0.61} 30.0 65 5.53 {0.56} 32.5 70 5.14 {0.52} 35.0 75 4.79 {0.49} 37.5 80 4.49 {0.46} 40.0 90 4.00 {0.41} 45.5 100 3.60 {0.37} 50.0 125 2.88 {0.29} 62.5 150 2.40 {0.24} 75.0
105.0 120.0
Outside allowable range
110.0
SWC12–20
20 5.48 {0.56} 10.0
11.0
Outside allowable range
SWC30–25
25 31.38 {3.20} 12.5
13.8
25 30 35 40 45 50 55 60 65 70 75 80 90
13.8 16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5
15.0 18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0
25 4.38 {0.45} 12.5 30 3.65 {0.37} 15.0 35 3.13 {0.32} 17.5 40 2.74 {0.28} 20.0 45 2.43 {0.25} 22.5 50 2.19 {0.22} 25.0 55 1.99 {0.20} 27.5 60 1.83 {0.19} 30.0 65 1.68 {0.17} 32.5 70 1.56 {0.16} 35.0 75 1.46 {0.15} 37.5 80 1.37 {0.14} 40.0 90 1.22 {0.12} 45.0
198 {20.2}
180 {18.3}
216 {22.0}
30 35 40 45 50 55 60 65 70 75 80 90
30 26.15 {2.67} 15.0 35 22.42 {2.29} 17.5 40 19.61 {2.00} 20.0 45 17.43 {1.78} 22.5 50 15.69 {1.60} 25.0 55 14.26 {1.45} 27.5 60 13.08 {1.33} 30.0 65 12.07 {1.23} 32.5 70 11.21 {1.14} 35.0 75 10.46 {1.07} 37.5 80 9.81 {1.00} 40.0 90 8.72 {0.89} 45.0 100 7.85 {0.80} 50.0 125 6.28 {0.64} 62.5 150 5.23 {0.53} 75.0 175 4.48 {0.46} 87.5 200 3.92 {0.40} 100.0
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8 82.5 96.3
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0 90.0
20 12.5
66 {6.7}
55 {5.6}
60 {6.1}
12 7.4
100 125 150
471 {48.0}
392 {40.0}
431 {44.0}
30 20
Outside allowable range
SWC22–25
25 19.61 {2.00} 12.5
13.8
30 35 40 45 50 55 60 65 70 75 80 90
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0 68.8 82.5
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0 75.0 90.0
30 16.34 {1.67} 15.0 35 14.01 {1.43} 17.5 40 12.26 {1.25} 20.0 45 10.90 {1.11} 22.5 50 9.81 {1.00} 25.0 55 8.92 {0.91} 27.5 60 8.17 {0.83} 30.0 65 7.54 {0.77} 32.5 70 7.00 {0.71} 35.0 75 6.54 {0.67} 37.5 80 6.13 {0.63} 40.0 90 5.45 {0.56} 45.0 100 4.90 {0.50} 50.0 125 3.92 {0.40} 62.5 150 3.27 {0.33} 75.0
Outside allowable range
100 125 150 175 200
SWC14–25
25 8.17 {0.83} 12.5
13.8
30 35 40 45 50 55 60 65 70 75 80
16.5 19.3 22.0 24.8 27.5 30.3 33.0 35.8 38.5 41.3 44.0 49.5 55.0
18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 45.0 48.0 54.0 60.0
30 6.81 {0.69} 15.0 35 5.84 {0.60} 17.5 40 5.11 {0.52} 20.0 45 4.54 {0.46} 22.5 50 4.09 {0.42} 25.0 55 3.71 {0.38} 27.5 60 3.41 {0.35} 30.0 65 3.14 {0.32} 32.5 70 2.92 {0.30} 35.0 75 2.72 {0.28} 37.5 80 2.55 {0.26} 40.0 90 2.27 {0.23} 45.5 100 2.04 {0.21} 50.0
105.0 120.0
110.0
294 {30.0}
270 {27.5}
245 {25.0}
22 13.5
1 million times
500,000 times
300,000 times
(NT) – Part Number NT – SWC10–30
Operation frequency
Alterations
102 {10.4}
112 {11.4}
123 {12.5}
14 8.5
Quotation
Part Number SWC10–30
Order
Alterations Code
Spec.
100 125 150
Paint peeling process d P.1147 Peel the coating by shot peening the coil springs. e Since the springs which have undergone the painting peeling are easy to rust, be careful in handling. Rusting of spring will lead to premature damaging e Compared to painted springs, there may be some dispersions in terms of load, etc. depending on the lot.
Quotation
90 100
Delivery
1 million times
500,000 times
300,000 times
Operation frequency
1 million times
500,000 times
300,000 times
NT
Operation frequency
M Material Oil tempered wire for spring ● Load calculation method: Load = Spring constant × Deflection (International unit) N = N/mm × Fmm
e The maximum deflection of shapes marked with "Outside allowable range" is 55%. Avoid using when deflection is more than 55%.
No painting
kgf = kgf/mm × Fmm (kgf = N × 0.101972)
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
1169
1170
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