Help Centre

We’re here to answer all your questions around the correct application of gas struts and dampers. From key terminology, an introduction to gas struts and our series of how to videos, to selecting the right product, sizing, customisation and our range of FAQs, our Help Centre contains all of the information you’re looking for. You can also ask an expert through our adjacent contact form, with our designers and engineers on-hand to answer questions specific to your product or application.

Click here to download and complete our Gas Spring Sizing Form or here to download our Gas Spring Application Enquiry Form and submit either when completing our Ask The Expert form to help our designers and engineers with your query.

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  • Getting Started
    Introduction to a Gas Spring Construction of a Gas Spring Gas Spring Terminology Forces and Spring Rates Gas Spring Standards
  • Selecting The Right Product
    The Two Key Questions Standard Gas Spring Sizes Which Product is right for me? Technical Data
  • Customisation
    Tailoring your Gas Spring
  • Want to Know More?
    Do’s and Don’ts Mounting Position Terminology Mounting Orientation Mounting – Other Considerations Mounting – Practical Considerations Whitepaper – Understanding the Basics Whitepaper – Gas Spring Overview Whitepaper – Gas Spring Overview (Part 2) Whitepaper – Gas Spring Mounting
  • Show Me How
    How to fit and de-gas a Vari-Lift valved gas spring (gas strut) Stop & Stay Multi-Positional Gas Springs Cam-Stay – Multi-Positional Telescopic Stay
  • Troubleshooting
    Frequently Asked Questions
  • Datasheets
    General Range Overview Camloc Motion Control ISO 9001 Certificate Gas Spring Application Enquiry Form Vari-Lift Instruction Safety Leaflet Gas Spring Disposal Advice MSDS Gas Springs Ref:112 MSDS Blocklifts Ref:126 MSDS Dampers Ref:125

How Do Gas Struts Work?

Gas struts, also known as gas springs, provide direct support for safely lifting, positioning, lowering and counterbalancing weights. They offer the versatility of a wide range of forces, simple mounting, compact size, speed‐controlled damping, and cushioned end motion, combined with a flat force curve.

The most popular use for gas struts is as a support on a horizontally hinged door. However, they are also used on many other applications in industries ranging from transportation and office equipment to off‐road vehicles, medical and leisure equipment, thanks to their versatility and ease of use.

The weight range supported can be a few kilos up to half a tonne – or from 50 to 5000 Newtons (2 springs). Gas struts incorporate proven engineering techniques with thousands of cycles of testing to ensure they meet the standards demanded by customers.

A Camloc gas strut is a sealed energy source containing pressurised inert gas and a small amount of oil. Being self‐contained units they require no power source or maintenance. With their tough, rigid construction and high structural integrity, they provide years of trouble‐free operation.

Camloc gas springs work by forcing, under pressure, an inert gas (Nitrogen) into a cylinder. The internal pressure then greatly exceeds atmospheric pressure. This differential in pressure exists at any rod position and generates an outward force on the rod, making the gas spring extend.

This is due to: Force = Pressure x Area
When the rod is compressed into the cylinder, the internal pressure and the output force increase according to the volume displaced by the rod. On extension or compression, gas is transferred from one side of the piston to the other via a small orifice. This can be accurately metered to control either the rate of extension, compression or both.

At the end of the extension stroke, oil damping occurs due to a hydraulically‐cushioned zone. These features help protect hinges and mounts by applying constant force with a damped end of travel.

The flow rate of nitrogen and hydraulic oil is controlled while extending to maintain a controlled extension rate. The flow rate is increased in compression to ease movement. A gas spring also contains a limited amount of oil that lubricates the seals, piston and piston rod.

When the rod is either compressed or extended, this movement of gas and oil within the cylinder from one side of the piston to the other, creates a damping effect, reducing sudden shocks on mountings, hinges and your application.

Contact Us Today

From our base in Leicester, UK, we design and manufacture quality-engineered solutions in motion control.

At Camloc, we are more than just a manufacturer of Gas Springs and Dampers.