1. General Questions About Gas Struts / Gas springs

What is a Gas Strut / Gas Spring?

A Gas Strut, also known as a Gas Spring is a sealed device that uses compressed nitrogen and oil to provide controlled lifting, lowering and damping. It supports lids, hatches, covers and panels by reducing the effort required to move them.

Is a Gas Strut the same as a Gas Spring?

Yes. The terms Gas Strut and Gas Spring are used interchangeably.

How does a Gas Strut work?

A Gas Strut contains a piston rod, a cylinder filled with nitrogen gas and a small amount of oil for damping. When compressed the internal pressure increases and creates a controlled extension force.


Learn more: How does a gas strut work?

How long do Gas Struts last?

Most Gas Struts have a typical lifespan of 30,000 to 50,000 cycles depending on force, orientation and environment.

Why do Gas Struts lose pressure over time?

Gas can slowly permeate through internal seals which reduces force. Heat, vibration or incorrect mounting can also speed up pressure loss.

2. Choosing the Right Gas Strut

How do I choose the right Gas Strut / Gas Spring?

You will need to consider force, size, material, mounting and fittings.

Start here: How to choose the right gas strut for your application

How do I calculate the correct force?

Force is based on the weight of the lid or panel and the position of the hinges and mounting points.

To calculate force you will need to know the weight of your lid and how the strut will be mounted.

The first table shows the typical lid weight with the matching gas strut force.

The second table shows the available force ranges based on pressure and rod buckling capability.

Choose the closest force in 10 Newton steps to ensure safe and reliable operation.

Gas_Spring_table(1)


Newtons_Table(1)

 

Full details: What size gas strut do I need?

How do I measure a Gas Strut?

Measure the extended length, compressed length and stroke. Also check the end fittings and mounting centres.

gas-strut-technical-drawing-explained


Guide here: What size gas strut do I need?

 

What size Gas Strut Do I Need?

You will need to match length, stroke and force to your application.

 

gas-strut-technical-drawing-explained

 

Guide here: What size gas strut do I need?

What type of Gas Strut Do I Need?

You can choose from adjustable, fixed force, stainless steel or locking Gas Struts depending on your application.

See guide: What type of gas strut do I need?

3. Materials and Environmental Suitability

Are stainless steel gas struts better for outdoor use?

Yes. 316L stainless steel is corrosion-resistant and ideal for marine, food, outdoor and washdown environments.

Can gas struts be used in marine applications?

Yes if they are manufactured from 316L stainless steel with corrosion-resistant components.

Are gas struts suitable for medical or hygienic environments?

Stainless steel Gas Struts are the best choice as they are resistant to cleaning chemicals and moisture.

4. Adjustable, Fixed and Special Gas Struts

What is an adjustable force gas strut?

An adjustable force Gas Strut is supplied fully charged and can have the force reduced during installation using a built-in valve.


Ideal for prototyping and reducing SKUs.

What is a fixed force gas strut?

A fixed force Gas Strut is preset at a specific pressure and cannot be adjusted.

What is a locking gas strut?

A locking Gas Strut includes a valve that allows the strut to hold its position under load.

5. Installation and Safety

Which way should a gas strut be mounted?

Gas Struts work best when the rod is pointing down in the closed position. This keeps the internal oil on the seals, which improves service life.

 

Can gas struts be mounted horizontally?

Some can, but performance may vary. Rod-down mounting is recommended wherever possible.

Do I need to replace both gas struts at the same time?

Yes. Replacing only one can cause uneven lifting force and reduced life.

Are gas struts safe?

Gas Struts are safe when used correctly. They store high pressure and should never be opened, drilled or heated.

6. Replacements and Compatibility

Can you replace gas struts like for like?

Yes, if you match force, length, stroke and end fittings.

 

Can you cross-reference Camloc or Stabilus part numbers?

Yes. JET PRESS can cross-reference most part numbers. Contact our team with your existing Gas Strut details.

Can gas struts be refilled or repaired?

Standard Gas Struts cannot be refilled and should be replaced when pressure is lost.

Are gas struts safe?

Gas Struts are safe when used correctly. They store high pressure and should never be opened, drilled or heated.

7. products, CAD and Samples

Do you supply adjustable gas struts?

Yes. Our Variforce range allows force to be reduced during installation.

We have a stocked range available for immediate dispatch.

 

Do you supply stainless steel gas struts?

Yes, we have a stocked range available for immediate dispatch.

Do you offer samples?

Yes. Samples can be provided for prototyping and test fitting.

Do you provide CAD files?

Yes. CAD files are available on request to support design work.


Need Help Choosing a Gas Strut?

 

Our technical team can help with force calculations, mounting advice, CAD files and samples.

Get support today and ensure your application is matched with the correct specification. Tel +44 1623 551 800 or email webenquiries@jetpress.com