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Extension Spring-Custom-made Universal-Swivel-Hook (movable-hook) Tension Spring

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Extension Spring-Custom-made Universal-Swivel-Hook (movable-hook) Tension Spring

Quantity

Unit Price

Price

Price range: $1.04 – $10.00

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Price range: $1.04 – $10.00

Total:

Price range: $1.04 – $10.00

Extension Spring-Custom-made Universal-Swivel-Hook (movable-hook) Tension Spring Description

  1. Performance
    • Uniform Corrosion-Safe Tension – Formed from 304 austenitic stainless wire Ø1 – 5 mm and solution-annealed, the springs deliver stable modulus and ≥60 % residual elastic energy even after 1 000 h salt-spray exposure.
    • High Elastic Limit – Cold-worked coils reach 1 250–1 600 MPa tensile strength; dual stress-relief at 300 °C holds permanent set below 2 % after 100 000 full-stroke cycles.
    • Swivel-Hook Versatility – Precision-milled universal hooks rotate 360 ° to self-align under load, eliminating side-bending and extending service life when anchor points are offset.
    • Custom Force Curve – Free lengths 30 – 400 mm and coil outside diameters Ø10 – 35 mm allow preload tuning from 25 N to 1 200 N; variable-pitch options reduce initial pull force while preserving maximum extension travel.
  2. Application Scenarios & Assembly Requirements
    • Access Panels & Machine Guards – Maintain consistent closure pressure yet permit quick removal; swivel hooks compensate for misaligned latch pins.
    • Automotive & Marine Components – Withstand road salt, humidity and temperature swings from –40 °C to +120 °C in throttle linkages, seat return mechanisms, and deck-lid assists.
    • Medical & Food Equipment – Non-magnetic 304 alloy meets hygiene standards for lab centrifuges, packaging jaws, and commercial dishwashers.
    • Fitting Guidelines
    – Eyelet/Pin Diameter: 0.75 × wire Ø to minimise local stress.
    – Extension Limit: cap stroke at 85 % of elastic range to retain ≥95 % initial load through life.
    – Hook Seating: allow ≥30 ° free rotation or use clevis ends to exploit swivel capability.
  3. User-Friendly Operation
    • Plug-and-Play Hooks – Detachable, reversible hooks install without tools; spring body can be replaced in situ while re-using existing swivels.
    • Kink-Free Packaging – Supplied on reusable reels or in anti-static trays with coil separators, preventing tangles and preserving preload accuracy.
    • Color-Band Coding – Heat-shrink markers on each spring indicate wire size and rate, streamlining line-side selection and maintenance audits.
    • Clean-Room Ready – Ultrasonically washed and nitrogen-packed; compatible with IPA wipe-down or autoclave cycles up to 135 °C (uncoated versions).
  4. Quality & Longevity
    • ISO 9001 / IATF 16949 Production – In-line laser gauges keep coil pitch tolerance within ±0.05 mm and load tolerance within ±6 %.
    • Shot-Peened Fatigue Resistance – Compressive surface stresses boost cycle life by >25 % versus non-peened counterparts; laboratory tests show <3 % load fade after 1 000 000 extensions.
    • Custom Surface Finishes – Options include passivation (ASTM A967), black oxide, electropolish, or PTFE dry film (<8 µm) to tailor friction, reflectivity, or biocompatibility without altering spring rate.
    • Full Traceability – Laser-etched codes link each spring to 3.1 material certificates, furnace charts, and individual load/deflection graphs, ensuring audit-ready documentation for aerospace, medical, and food-processing applications.

Additional information

Wire Diameter（mm)

1.0, 1.2, 1.4, 1.5, 1.8, 2.0, 2.5, 3.0, 3.5, 4.0, 5.0
Spring Outer Diameter(mm)

10, 12, 12.8, 13, 14, 15, 17, 18, 20, 22, 25, 28, 30, 35
Spring Length(mm)

100, 108, 110, 115, 120, 123, 131, 133, 135, 140, 150, 176, 180, 185, 200, 220, 250, 280, 300, 350, 50, 65, 70, 80, 90, 92, 95
Material

Stainless steel
Manufacturer

GUXIANG
Package Size(cm)

30*20*20
SKU

1，000,000 pieces
Shipping Term

EXW Guangdong Province

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