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Buy Блокируемые на растяжение in stock in Saint Petersburg.

Why customers choose lockable extension gas springs from VST

Quality control and certification

Certified to ISO 9001 and ISO/TS 16949 quality management — with continuous improvement focused on defect prevention and reducing variation and scrap across the supply chain.

Geometric parameter accuracyGeometric parameter accuracy
Corrosion testingCorrosion testing
Three-stage inspectionThree-stage inspection
Wear resistance controlWear resistance control
Low-temperature testingLow-temperature testing
High-temperature testingHigh-temperature testing

Geometric parameter accuracy

Rod Ø, cylinder Ø, stroke and length are controlled within batch tolerances so units fit mounts and mechanisms consistently.

Corrosion testing

Salt spray and humidity tests confirm rod and body coating resistance in aggressive environments.

Three-stage inspection

Incoming material control, in-process checks and final acceptance of every batch before shipment.

Wear resistance control

Cycle tests and seal checks reduce the risk of leaks and sticking during long-term use.

Low-temperature testing

Performance and force checks at sub-zero temperatures for outdoor and unheated applications.

High-temperature testing

Leak tightness and specs at elevated temperatures — for engine bays, industrial equipment and hot climates.

Production quality metrics

In-house defect rate
1 : > 1,000,000
Field defect rate
1 : > 998,000
Pre-shipment inspection
100%
On-time delivery
100%
Claims
< 1%
Customer satisfaction
> 99%
ISO 9001 certificate — TPK Vesta
ISO/TS 16949 certificate — TPK Vesta

Precision production and inspection algorithms

Every VST production step — from tube prep to end-fitting lubrication — follows a digital parameter profile. Automated test rigs verify force, rod stroke and leak tightness; deviations are logged per batch. That reduces spread between units and makes catalog-based replacement selection more predictable.

  1. Incoming inspection

    Raw materials

    • Geometry inspection
    • Corrosion testing

    Seals

    • Geometry inspection
    • Wear control
    • Temperature testing

    Components

    • Geometry inspection
    • Corrosion testing

  2. Full production cycle

    • Geometry inspection

  3. Control assembly

    • Geometry inspection

  4. Gas filling

    • Three-stage inspection

  5. Cleaning and coating

    • Geometry inspection
    • Three-stage inspection

  6. Warehousing

    • Three-stage inspection

Lockable extension springs hold the rod when extended. Used in desks, monitor arms and medical stands.

Extension locking

Lock engages on extension; user sets position and releases to move again. Avoid side loads beyond specification.

Applications

  • Height-adjustable desks and monitor arms
  • Medical equipment stands
  • Industrial consoles
  • Extendable sections on special vehicles

Selection

Match force in newtons to load, check min/max extended length and release mechanism.

VST extension-lock springs

TPK Vesta produces extension-lock springs for OEM and aftermarket.

VST analogues for Stabilus, Suspa, Hahn and other brands

TPK Vesta manufactures VST gas springs — quality parametric analogues of original Stabilus, Suspa, Bansbach, Hahn and other brands. Examples from this category catalogue:

In Stabilus, springs in this group belong to the BLOC-O-LIFT line (locking gas springs with intermediate positions). TPK Vesta analogues use the VSTB series. BLOC-O-LIFT.

See the full list in the catalogue above. Send your spring marking — our engineers will find the exact VST match.

Catalog

459 extension-lock items available.

Frequently asked questions

Extension lock instead of compression lock?

Only if mechanism kinematics require extension locking.

How many fixed positions?

Generally any position within working stroke — model dependent.

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