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Guide Line - Spring selection and operating condition
Spring Compression Table
Series |
Load |
Colour |
Long Life |
Medium Life |
Average Life |
Equivalent Standard |
Die Spring (Equivalent to ISO 10243) |
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SLG |
Lightest Load |
Pista |
30% |
40% |
50% |
ISO 10243 |
SGR |
Light Load |
Green |
25% |
30% |
40% |
ISO 10243 |
SBL |
Medium Load |
Blue |
25% |
30% |
37.5% |
ISO 10243 |
SRE |
Heavy Load |
Red |
20% |
25% |
30% |
ISO 10243 |
SYE |
Extra Heavy Load |
Yellow |
17% |
20% |
25% |
ISO 10243 |
SUL |
Ulra Load |
Silver |
10% |
12% |
15% |
ISO 10243 |
Die Spring (Equivalent to JIS B 5012) |
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SSF |
Lightest Load |
Yellow |
40% |
45% |
50% |
JSB B 5012 |
SSl |
Light Load |
Sky Blue |
32% |
36% |
40% |
JSB B 5012 |
SSM |
Medium Load |
RED |
25.6% |
28.8% |
32% |
JSB B 5012 |
SSH |
Heavy Load |
Dark Green |
19.2% |
21.6% |
24% |
JSB B 5012 |
SSB |
Extra Heavy Load |
Brown |
16% |
18% |
20% |
JSB B 5012 |
SSR |
High Compression |
Ivory |
45% |
50% |
60% |
JSB B 5012 |
STD |
High Compression |
Violet |
45% |
50% |
60% |
JSB B 5012 |
Spring Geometry
Specifications
Sr. No. |
Description |
Terminology |
Units |
1. |
Hole Diameter |
Dh |
mm |
2. |
Rod Diameter |
Dd |
mm |
3. |
Outside Diameter |
Do |
mm |
4. |
Inside Diameter |
Di |
mm |
5. |
Free Length |
Lo |
mm |
6. |
Spring Rate |
C |
kg / mm |
Sr. No. |
Specification |
Tolerance |
1. |
Spring Load |
+ / - 10 % |
2. |
Maximum Length |
+ / - 1 % + / - 0.75mm at least. |
3. |
Squareness |
0.03 x Lo + / - 0.05 Lo Max |
Spring Compression Table in % of Length (Lo) |
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Series |
Colour |
Comp.% Lo |
Die Spring ( Equivalent to ISO 10423 ) |
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SGL |
Pista |
40.0 |
SGR |
Green |
30.0 |
SBL |
Blue |
30.0 |
SRE |
Red |
25.0 |
SYE |
Yellow |
20.0 |
SUL |
Silver |
12.0 |
Die Spring ( Equivalent to JIS 5012 ) |
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SSF |
Yellow |
45.0 |
SSL |
Sky Blue |
36.0 |
SSM |
Red |
28.8 |
SSH |
Dark Green |
21.6 |
SSH |
Brown |
18.0 |
Die Spring Equivalent to ISO - 10243
Die Spring Equivalent to ISO - 10243
Die Spring with Round wire
Die Spring Equivalent to JIS 5012