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Metric SPEC Die Springs
Heavy-Duty Metric (GOLD)
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CATALOG
NUMBER
Hole Size (mm)
Rod Size (mm)
Free Length (mm)
Spring Rate kg/mm
Deflection For Moderate Life 30% of Free Length
Deflection For Average Life 20% of Free Length
Deflection For Long Life 15% of Free Length
Total Travel to Solid
mm
mm
mm
mm
Load (kg)
Length of Deflection (mm)
Load (kg)
Length of Deflection (mm)
Load (kg)
Length of Deflection (mm)
Load (kg)
Length of Deflection (mm)
St50320
10
4.5
25
2.21
16.9
7.6
11.2
5.1
8.4
3.8
19.9
9
St50360
10
4.5
32
1.75
16.7
9.5
11.1
6.4
8.3
4.8
20.6
11.8
St50400
10
4.5
38
1.71
19.6
11.4
13.1
7.6
9.8
5.7
25
14.6
St50440
10
4.5
44
1.5
20
13.3
13.3
8.9
10
6.7
26.1
17.4
St50480
10
4.5
51
1.29
19.6
15.2
13.1
10.2
9.8
7.6
25.9
20.1
St50520
10
4.5
64
1.07
20.4
19.1
13.6
12.7
10.2
9.5
27.5
25.7
St50560
10
4.5
76
0.75
17.1
22.9
11.4
15.2
8.6
11.4
23.2
30.9
St50600
10
4.5
305
0.21
19.6
91.4
13.1
61
9.8
45.7
31.7
147.8
St50640
13
7
25
4.21
32.1
7.6
21.4
5.1
16.1
3.8
48.7
11.6
St50680
13
7
32
3.32
31.6
9.5
21.1
6.4
15.8
4.8
49.5
14.9
St50720
13
7
38
2.93
33.5
11.4
22.3
7.6
16.7
5.7
54.8
18.7
St50760
13
7
44
2.46
32.9
13.3
21.9
8.9
16.4
6.7
52.8
21.4
St50800
13
7
51
1.96
29.9
15.2
20
10.2
15
7.6
49.9
25.4
St50840
13
7
64
1.5
28.6
19.1
19.1
12.7
14.3
9.5
48.2
32.1
St50880
13
7
76
1.32
30.2
22.9
20.1
15.2
15.1
11.4
51.3
38.8
St50920
13
7
89
1.12
30.5
26.7
20.3
17.8
15.2
13.3
52.2
46
St50960
13
7
305
0.29
26.1
91.4
17.4
61
13.1
45.7
45.5
159.2
St51000
16
8.5
25
7.57
57.7
7.6
38.5
5.1
28.8
3.8
68.7
9.1
St51040
16
8.5
32
5.29
50.3
9.5
33.6
6.4
25.2
4.8
63.6
12
St51080
16
8.5
38
4.86
55.5
11.4
37
7.6
27.8
5.7
74.8
15.4
St51120
16
8.5
44
4.29
57.2
13.3
38.1
8.9
28.6
6.7
79.5
18.5
St51160
16
8.5
51
3.71
56.6
15.2
37.7
10.2
28.3
7.6
81.1
21.8
St51200
16
8.5
64
3.04
57.8
19.1
38.6
12.7
28.9
9.5
86.2
28.4
St51240
16
8.5
76
2.57
58.8
22.9
39.2
15.2
29.4
11.4
89.8
34.9
St51280
16
8.5
89
2.18
58.1
26.7
38.7
17.8
29.1
13.3
90.4
41.5
St51320
16
8.5
102
1.93
58.8
30.5
39.2
20.3
29.4
15.2
92.6
48
St51360
16
8.5
305
0.71
65.3
91.4
43.5
61
32.7
45.7
91
127.4
St51400
19
9.5
25
19.29
147
7.6
98
5.1
73.5
3.8
St51440
19
9.5
32
15.72
149.7
9.5
99.8
6.4
74.8
4.8
162.5
10.3
St51480
19
9.5
38
11.72
133.9
11.4
89.3
7.6
67
5.7
152.9
13.1
Metric SPEC Die Springs
Heavy-Duty Metric (GOLD)
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