Key advantages
- Controlled initial tension
- Machine loops, side hooks and custom hooks
- Working stroke and safety extension review
- Anti-deformation packaging options
- Batch consistency tracking
Tension And Reset
Extension springs with tailored initial tension, hook geometry and working stroke.
Extension springs absorb and store energy under tensile load. Feima designs and produces extension springs around installation distance, initial tension, hook stress, fatigue life and assembly safety requirements.
OEM / ODM made-to-drawing supply
Product Overview
Reliable pull-back force for linkage and return systems.
We help buyers choose hook styles, working length, initial tension and material according to real assembly constraints. For critical parts, hook stress and fatigue risk are reviewed before sample production.
Common applications
Door and latch systems
Automotive pedals and linkages
Appliance reset mechanisms
Electronic switches
General machinery
Customizable specifications
- Typical materials
- Piano wire, stainless steel, carbon steel, galvanized wire
- Wire diameter
- 0.2 mm - 10 mm, made to drawing
- End forms
- German hook, English loop, side hook, long hook or custom formed end
- Initial tension
- Customized according to force and stroke target
- Surface treatments
- Zinc, nickel, blackening, passivation or custom finish
- Quality checks
- Free length, hook angle, load at extension, surface and packaging
Engineering Support
Not sure which spring route fits your assembly?
Send the drawing, sample photo, working load, installation space or target function. Feima can help review the manufacturable route before quoting.
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