Springs
Extension Spring
Close-wound helical springs with machine loops or crossover hooks for tensile loads.
Precision close-wound helical springs designed to absorb and store energy by resisting tensile pulling forces. Manufactured with initial tension and custom end loops, hooks, or swivel eyes for secure mechanical attachment.
Representative image · Springs
Specifications
Technical profile
- End configurations
- Machine half/full loops, crossover center hooks, extended hooks, swivel eyes
- Wire diameter
- 0.3 mm to 12.0 mm spring wire diameter
- Material grades
- SS304 / SS316 / Carbon Spring Steel / Music Wire / Inconel 600
- Initial tension
- Custom wound with controlled initial tension to hold mechanisms firmly closed
- Stress relief
- Oven baked post-coiling to relieve forming stresses and stabilize hook strength
- Load rating
- Engineered to exact pull-force at specified extended length
Specifications are typical and vary by variant. Share your duty conditions for an exact recommendation.
Key benefits
Why this product
- Initial tension feature holds doors, lever arms, and belt tensioners firmly in return position without slack
- Crossover center hook geometry ensures load pull vector passes directly through the central spring axis
- Stainless steel SS316 construction prevents rusting and breakage in wet food processing washdown zones
- Custom swivel hook loops prevent spring twisting and premature hook fatigue in articulated mechanisms
Applications
Typical industries
FoodPlasticsChemical
Related categories
Need this extension spring for your line?
Share your duty conditions and drawings — our team responds with a technical recommendation and a firm quote.