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Metric SPEC Die Springs
Medium Heavy-Duty Metric (RED)
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CATALOG
NUMBER
Hole Size (mm)
Rod Size (mm)
Free Length (mm)
Spring Rate kg/mm
Deflection For Moderate Life 37% of Free Length
Deflection For Average Life 25% of Free Length
Deflection For Long Life 20% 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)
St50310
10
4.5
25
1.61
15.1
9.4
10.2
6.4
8.2
5.1
18.6
11.6
St50350
10
4.5
32
1.3
15.3
11.7
10.3
7.9
8.3
6.4
20.2
15.5
St50390
10
4.5
38
1.2
16.9
14.1
11.4
9.5
9.1
7.6
24.4
20.4
St50430
10
4.5
44
1.04
17
16.4
11.5
11.1
9.2
8.9
24.3
23.4
St50470
10
4.5
51
0.89
16.8
18.8
11.3
12.7
9.1
10.2
23.9
26.8
St50510
10
4.5
64
0.75
17.6
23.5
11.9
15.9
9.5
12.7
25.5
34.1
St50550
10
4.5
76
0.54
15.1
28.2
10.2
19.1
8.2
15.2
21.8
40.8
St50590
10
4.5
305
1.06
18.1
112.8
12.2
76.2
9.8
61
28.9
179.9
St50630
13
7
25
3
28.2
9.4
19.1
6.4
15.2
5.1
38
12.7
St50670
13
7
32
2.48
29.1
11.7
17.7
7.9
15.8
6.4
40.8
16.4
St50710
13
7
38
2.14
30.2
14.1
20.4
9.5
16.3
7.6
44.1
20.6
St50750
13
7
44
1.86
30.5
16.4
20.6
11.1
16.5
8.9
45.4
24.4
St50790
13
7
51
1.55
29.2
18.8
19.7
12.7
15.8
10.2
43.7
28.1
St50830
13
7
64
1.21
28.5
23.5
19.3
15.9
15.4
12.7
43.3
35.7
St50870
13
7
76
1.02
28.7
28.2
19.4
19.1
15.5
15.2
44.4
43.6
St50910
13
7
89
0.84
27.6
32.9
18.7
22.2
14.9
17.8
42.6
50.7
St50950
13
7
305
0.21
24.2
112.8
16.3
76.2
13.1
61
36
168
St50990
16
8.5
25
4.95
46.5
9.4
31.4
6.4
25.1
5.1
48.1
9.7
St51030
16
8.5
32
3.71
43.6
11.7
29.5
7.9
23.6
6.4
45.3
12.6
St51070
16
8.5
38
3.39
47.8
14.1
32.3
9.5
25.9
7.6
57.2
16.9
St51110
16
8.5
44
3
49.3
16.4
33.3
11.1
26.7
8.9
63.8
21.3
St51150
16
8.5
51
2.64
49.7
18.8
33.6
12.7
26.9
10.2
66.9
25.3
St51190
16
8.5
64
2.05
48.3
23.5
32.6
15.9
26.1
12.7
65
31.6
St51230
16
8.5
76
1.79
50.3
28.2
34
19.1
27.2
15.2
70.7
39.6
St51270
16
8.5
89
1.52
49.9
32.9
33.7
22.2
27
17.8
70.5
46.4
St51310
16
8.5
102
1.36
51
37.6
34.5
25.4
27.6
20.3
75.2
55.4
St51350
16
8.5
305
0.48
54.4
112.8
36.7
76.2
29.4
61
83.5
173.2
St51390
19
9.5
25
10.29
96.7
9.4
65.3
6.4
52.3
5.1
117.6
11.4
St51430
19
9.5
32
7.86
92.2
11.7
62.4
7.9
49.9
6.4
118.2
15
St51470
19
9.5
38
5.71
80.6
14.1
54.4
9.5
43.5
7.6
106.7
18.7
Metric SPEC Die Springs
Medium Heavy-Duty Metric (RED)
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