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A guide to selecting the right gas strut

Choosing the right gas strut requires careful consideration for your specific needs. In this article, we will explore the key things to consider when choosing a gas spring.

Understanding your gas strut application

It's crucial to understand the needs of your application in order to choose the right gas strut. Consider what you need it to do (e.g. lifting, holding, or lowering), the weight or force it needs to support, and any environmental conditions it may encounter.

Determining the size of your gas strut

The size of your gas strut should generally be 55-60% the length of your door, hatch, or lid. However, to get a fully accurate figure on both length and diameter, there are some key considerations to make, including:

  • What is the weight of the load?
  • How far will it need to move (i.e. what is the stroke length)? 
  • What is the mounting orientation and location?

Calculating the required force

To find the required force, you need to consider both the weight of the object being supported and the desired motion. By understanding the weight distribution, leverages, and angles involved, you can estimate the force needed accurately.

Identifying the extended and compressed lengths

Gas struts come in many lengths to suit different applications. When fully extended, the extended length is the measurement from the centre of the end fittings (eye to eye). When fully compressed, the compressed length measures from the center of the end fittings.

Selecting the stroke length

The stroke length is the distance the gas strut travels from fully compressed to fully extended. It plays a crucial role in determining the range of motion and the required force. Consider the requirements of the application and choose a stroke length that provides the necessary movement without exceeding the capabilities of the gas strut.

Assessing the damping characteristics

Damping is the controlled resistance provided by a gas strut to slow down or dampen/cushion the motion. Depending on the application, you may need a gas strut with specific damping characteristics. For instance, you may require slow closing and opening speeds for safety reasons, or smoother operation to minimise vibrations.

Check mounting options and end fittings

Gas struts come with a variety of mounting options and end fittings to suit different installation scenarios. Consider the available space, mounting orientation, and the necessary attachments for your application. Ensure the fitting matches your setup, whether it's for the elbow, eye, or clevis fork joint.

Considering environmental factors

Certain environmental conditions can affect the performance and durability of gas struts. Factors like temperature extremes, humidity, corrosive atmospheres, or exposure to chemicals can impact lifespan and functionality. High-quality materials are used so we can provide gas struts that work well in very hot or very cold temperatures.

Seek expert advice

Selection can be complex, especially for specialised gas strut applications. Please contact our friendly customer service team at 01922 471 000 or email [email protected] for further assistance. We can provide valuable insights, recommend suitable models, and ensure that you make an informed decision.

We also offer accessories to help smooth and easy operation, such as mounting brackets, end fittings, and ball studs. Our gas struts work seamlessly with these accessories, ensuring that you get the best possible performance from your system.

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