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Gas Springs

Dynamic gas springs

When movement needs to feel effortless, a dynamic gas spring delivers the perfect balance of power and control. These advanced damped gas springs go beyond standard support, guiding openings and closings with smooth, cushioned precision. From heavy-duty machinery to everyday automotive applications, they ensure reliability where it matters most.

With decades of engineering expertise and a global manufacturing network, Lesjöfors is your trusted dynamic gas spring partner. Every spring is precision-engineered to deliver consistent performance, even in the most demanding environments.

Technical specifications

Size:

8-22 mm

Stroke:

≤300

Force:

≤900

A metallic cylindrical dynamic gas spring with a bigger end and a long, thin shaft on a transparent background.
A single dynamic gas spring with a black beginning and a silvery end is centered against a transparent background.

Ordering custom gas springs made easy

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What are dynamic gas springs?

A dynamic gas spring operates continuously throughout its stroke, regulating the piston’s speed to achieve a controlled, smooth motion — often with adjustable or damped characteristics. Unlike locking gas springs that can hold position, dynamic gas springs do not lock and are used when constant force and motion control are needed.

 

 

 

A row of six black and silver dynamic gas springs of varying sizes is arranged on a white surface. The dynamic gas springs are angled to the left, creating a sleek and organized look.
Custom dynamic gas springs

Custom dynamic gas spring solutions

Every application has unique requirements, and our dynamic gas springs are engineered to meet them. We work closely with you to design bespoke solutions, fine-tuning dimensions, forces, damping characteristics, and mounting options to match your exact specifications.

With decades of engineering expertise, Lesjöfors ensures every dynamic gas spring is optimized for performance, safety, and long-term durability. 

Types of dynamic gas springs

Dynamic gas springs are available in differing configurations, each designed to provide reliable damping in specific operating conditions.

  • A sleek, black and silver common dynamic gas spring on a transparent background. The spring has a shiny metallic tip and a black bigger part.

    Common dynamic gas springs

    These use a tapered slot in the cylinder wall to regulate gas flow, producing smooth and consistent damping across the stroke. They are widely used where soft, controlled motion is essential.

  • A sleek, black and silver common dynamic gas spring on a transparent background. The spring has a shiny metallic tip and a black bigger part.

    Two-stage dynamic gas springs

    These springs provide quick initial movement, transitioning into slower, cushioned damping near the end of travel, with the added benefit of a multi-stop option.

    This makes them suitable for applications requiring both speed and gentle closure.

  • A sleek, black and silver common dynamic gas spring on a transparent background. The spring has a shiny metallic tip and a black bigger part.

    Reverse dynamic gas springs

    Unlike standard models, these springs damp both extension and compression. They accelerate at the end of the stroke and are commonly used in door closure applications. They are designed for equipment where movement occurs in two directions and control is needed throughout.

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Advanced dynamic spring manufacturing

Lesjöfors dynamic gas springs are engineered with precision and reliability in mind, using advanced processes that ensure consistent performance in demanding environments. From precision forming and controlled damping mechanisms to specialized treatments that extend service life, every spring is manufactured under strict quality standards to deliver dependable results across industries.

  • Precision manufacturing with advanced CNC and assembly technology
  • Specialized treatments for durability and corrosion resistance
  • Certified quality – ISO 9001, ISO 14001, ISO 45001

 

 

A person's hands adjust a metal gas spring on a precision machining tool. The gas spring is metallic coloured.

How do dynamic gas springs work?

Dynamic gas springs control motion by combining pneumatic force with a built-in damping mechanism. Inside the cylinder, pressurized gas supports the load, while a longitudinal slot in the cylinder wall regulates gas flow. As the piston moves, the tapered slot slows the stroke, creating smooth and cushioned movement.

This spring damper design ensures reliable performance in applications where the piston rod cannot face downward, making it ideal for automotive hatches, industrial machinery, medical devices, and specialized equipment.

 

A single dynamic gas spring with a black beginning and a silvery end is centered against a transparent background.

Dynamic gas spring materials

Lesjöfors manufactures dynamic gas springs using high-quality materials and precision finishes designed to withstand demanding operating conditions. Cylinders are produced from pressure-rated carbon steel, offering excellent strength and cost efficiency for general industrial and automotive use. Piston rods are finely polished and treated with either chrome plating or black nitriding, providing superior wear resistance and long-term corrosion protection. To further enhance durability, components are coated with a corrosion-inhibiting paint that protects against environmental exposure.

Key reasons why Lesjöfors is your ideal supply partner

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    Global sales network and product support

    With a worldwide sales network and multiple manufacturing sites, we deliver both broad coverage and regional agility.

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    Technical support for application design

    From design support to application engineering, our experts help optimize your product performance.

  • A warehouse scene with tall shelves full of boxes. A forklift moves quickly down the aisle.

    Excellence in customer service

    Whether via e-commerce, personal service, or dedicated support, we ensure ease, reliability, and excellence in every interaction.

Trusted in marine and outdoor gym equipment

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MARINE INDUSTRY

Marine craftsmanship complemented by Lesjӧfors gas springs

Discover how Lesjöfors gas springs have played an integral part in the legacy of Sargo’s luxury, all-weather boats.

How we collaborate
A person exercises on outdoor gym equipment by a river, under clear blue skies. Trees and a distant bridge create a peaceful backdrop.
LESJÖFORS IN GYM EQUIPMENT

Pioneering new solutions for the gym equipment industry

Explore how Lesjӧfors collaborated with Nordiskt Utegym to deliver an innovative solution for bench press equipment with a new gas spring design.

How we collaborate

Other product types and custom solutions

Lesjöfors supplies a complete range of standard and custom products, from coil springs and wire forms to pressings and gas springs. If you have unique requirements, we also offer consultancy services, with engineers available to advise on materials, loads, and specifications. Contact us to discuss your requirements.

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