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Help CenterSwivel Bolt 7MM Conical Extension Springs For Farm Agricultural Machinery
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Certification:ISO 9001:2008 TS 16949,ROHS
Swivel Bolt 7MM Conical Extension Springs For Farm Agricultural Machinery
Specifications:
| Material | Spring steel |
| Wire diameter | 7mm |
| Outside diameter | 40mm |
| Body length | 410mm |
| Direction | Right |
| Hardness | HRC 38-42 |
| Finish | black oxide |
| Load type | tension |
| Style | barrel |
| Usage | agricultural machinery |
| Color | black |
| Hook type | Swivel bolts |
Description:
Our extension springs are available with different end configurations to facilitate the attachment to components being acted upon. End configurations that we offer include full loop,machine hook,coned end with swivel hook or bolt,crossover hook and custom shaped hook.
Using CNC spring coiling machines, we can produce custom extension springs with wire diameters from 0.08mm to 35mm in the way of cold wounding and hot wounding.
Our tech dep can design springs to have initial tensions according to the load requirement of your applications. We will also validate spring designs before manufacturing, and secondary processes such as color-coding, plating, peen shooting and heat-treating are must for extension springs to make sure high quality.
Applications:
Applications for extension springs include automotive interiors and exteriors, garage door assemblies, appliances,furniture,engineer machines,washing devices, motor,farm agricultural machinery as well as thousands of other uses. XULONG’s extension springs come in a wide array of sizes, from small medical devices to off-road machinery brake springs and marine container.
FAQ of extension springs:
Q) How does stress relieving or heat treating affect extension springs?
A) It can reduce the spring's initial tension, change the hook's position, or create a change in the spring's diameter.
Q) What are three things you can do to maximize the life of an extension spring?
A) The path of the wire should be smooth and gradual as it flows into the end; marks and other stress concentrations should be held to a minimum; and a minimum bend radius of 1 1/2 times the wire diameter is recommended.
Q) What needs to happen for an extension spring to have no initial tension?
A) The Extension Spring needs to be designed with space between the coils.
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