Extension Spring
Extension Spring
The extension spring is a helical spring that bears the axial tension, and the extension spring is generally made of circular section material. When not under load, the coils of the tension spring are generally tight and there is no gap between the coils.
Specifications of our extension spring：
Forming Method |
Material Diameter |
Spring iameter |
Spring Length |
Surface Coating |
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Cold Rolled Forming |
0.16-0.45 |
0.5-7 |
<100 |
Carbon steel springs: oiled, electroplated, boiled black or painted Stainless steel spring: bright or matt Surface spraying can also be processed according to customer requirements |
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0.5-1.5 |
2-22 |
<250 |
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1.6-4 |
5-65 |
<650 |
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4.1-8 |
14-130 |
<1000 |
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8.1-14 |
25-200 |
<1200 |
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Hot Rolled Forming |
10-16 |
30-250 |
<800 |
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17-27 |
50-350 |
<1200 |
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28-60 |
85-500 |
<1500 |
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In addition to the above specifications,if customers have special requirements,our company can design and manufacture according to the requirements.
Material: |
carbon spring steel, alloy spring steel, stainless spring steel, copper alloy, nickel alloy, etc. |
Material selection and allowable stress: |
1.When the important spring is damaged and has a significant impact on the entire machine, the allowable stress is appropriately reduced; |
2.The spring treated with strong pressure can increase the fatigue limit and has a significant effect on improving the relaxation under load.The allowable stress can be appropriately increased. | |
3.The spring treated with shot blasting can also improve the fatigue strength or fatigue life, and its allowable stress can be increased by 20%. | |
4.When the working temperature exceeds 60℃, the shear modulus should be corrected. | |
Application: |
Railway/Automobile/Electronics/Electromechanical/Mining and other fields |
Contact
Add：9 Mianfang Road, Dongguang County, Hebei Province
Tel：0317-7669917
Fax：0317-7669917
Phone：13785790327（Manager Wei）
16630826266（Manager Wei）
E-mail：frank@sinohuayuan.com
Zip code：061600
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SINO HUAYUAN (CANGZHOU) ELECTRIC MACHINE CO.,LTD.