How to Choose the Right Locking Gas Springs

Choosing the right locking gas springs starts with selecting the correct locking type for your application. The locking mechanism determines how the gas spring behaves under load, including whether it allows slight movement or holds a fully rigid position.

Once the locking type is defined, the next steps include determining load and force requirements, verifying stroke and dimensions, and ensuring proper mounting geometry and environmental compatibility.

Different locking mechanisms define how locking struts behave under load. The key difference is how the system responds after locking, which directly affects stability and usability.

Flexible locking gas springs can be locked at any position along the stroke. After locking, the rod still allows slight movement, creating a controlled cushioning effect.

This behavior is useful in applications where user interaction or dynamic loads need to be absorbed rather than completely restricted.

Typical applications include:

• Office chair backrests
• Medical beds
• Adjustable desks
• Patient support equipment

Rigid locking gas struts in the extended direction provide a firm lock once extended. The rod cannot be pulled further outward, ensuring stable positioning.

This type is selected when the extended position must remain fixed under load, especially when positional stability is required.

Typical use cases include:

• Height-adjustable desks
• Armrests
• Wheelchair supports

Rigid locking gas springs in the compressed direction are designed to lock firmly when compressed. Once compressed, further movement is restricted.

This configuration is more suitable for resisting downward loads and maintaining position under compression.

Typical applications include:

• Work platforms
• Inspection hatches
• Equipment covers
• Medical panels

After determining the locking type, selection errors usually occur in force calculation and installation design.

• Selecting incorrect force (too high or too low)
• Ignoring mounting angles and leverage
• Misunderstanding load direction
• Overlooking environmental conditions

These issues may not be obvious during installation, but often appear during repeated use or under actual load conditions.

Once the locking type is determined, the selection of locking struts becomes a matter of precise mechanical matching. The following factors directly affect performance, usability, and long-term reliability.

• Load and Force (F):
  Calculate based on load weight, center of gravity, and mounting geometry. Incorrect force leads to unstable support or difficult operation.
  Refer to how to calculate gas spring force or consult an engineering team if needed.
• Stroke and Dimensions:
  Ensure extended and compressed lengths fit the available space to avoid limited motion or interference.
• Mounting Position:
  Affects leverage, force distribution, and opening angle. Poor positioning may reduce efficiency and service life.
• Environmental Conditions:
  Consider temperature, humidity, and corrosion. Stainless steel locking gas struts are recommended for harsh environments.
• End Fittings:
  Select suitable connectors such as ball joints, eyelets, or clevis forks to ensure proper alignment and secure installation.
  For more details, refer to Gas spring end fittings and mounting brackets.

Locking gas springs are available in various specifications, including force range, stroke, tube diameter, rod diameter, and materials.

Standard configurations cover most applications, while customized solutions are available for specific requirements. For applications with unique load conditions or installation constraints, working with an experienced and reliable gas spring supplier becomes essential to ensure consistent quality and accurate specification matching.

Gastac is a professional gas springs manufacturer and gas springs supplier, providing locking struts and locking gas struts directly to global customers, with a focus on consistent quality and reliable supply.

Key advantages include:

• Direct supply, improving cost efficiency through optimized production and supply chain
• Stable quality with controlled manufacturing and batch consistency
• OEM customization to meet different application requirements
• Reliable lead times with standard models available from stock

With manufacturing experience since 2007, our products are certified under IATF 16949 and ISO 9001:2015. Each locking strut is tested to ensure reliable performance under repeated use and load conditions.

Choosing the right locking gas springs requires understanding load conditions, locking behavior, and installation design. A well-matched solution improves stability, usability, and long-term reliability.

If you need support with selecting locking gas struts, contact Gastac for professional assistance.