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 Gas Spring Sizing Form Vari-Lift Instruction Safety Leaflet Gas Spring Disposal Advice MSDS Gas Springs Ref:112 MSDS Blocklifts Ref:126 MSDS Dampers Ref:125

Introduction to a Gas Spring

The basic principle of a gas spring is the same as a mechanical coil spring; it’s a device for storing energy. However, where a coil spring’s energy comes from straining the material that makes up the spring, a gas spring’s energy comes from compressing the Nitrogen gas contained within it.  Gas struts are closed systems that are charged with inert Nitrogen gas and require no external energy source in order to operate. The pressure on either side of the piston remains equal irrespective of its position, which differs to a hydraulic or pneumatic cylinder that requires a pressure differential across the piston in order to move.  So, if this is the case, how does it work when no further gas is introduced, and the internal pressure remains equal? The answer lies in the small cross-sectional area of the rod where the gas is unable to exert any pressure. It is the difference between the gas pressure acting on the internal cross-sectional area of the rod, and the atmospheric pressure acting on the external end side of the rod that causes the rod to extend.    SXV1 CUT OUT 2 300x101 - Introduction to a Gas Spring  

As the rod is pushed into the tube the available gas volume is reduced and the gas contained in the spring is compressed. This increases the pressure (or resistance to force applied) and this compression of gas creates the spring-like behaviour. A small path through the piston enables the gas to flow across the piston and also provides the means of controlling the speed of the spring as it is depressed and extended. 

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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.