Gas struts, also known as gas springs, are essential components in many applications, from car boots and cabinets to industrial hatches and furniture. But when they stop working properly, replacing them with the right size and force is crucial. That brings us to an important question: how to measure gas struts accurately? In this guide, we’ll walk you through everything you need to know to avoid costly mistakes and ensure a perfect fit.
Why measuring your gas strut matters
Over time, gas struts can lose pressure or break down completely. When this happens, a quick replacement is not just a convenience. It’s often a necessity for safety and functionality. But if you don’t measure your gas struts correctly, the replacement may not work properly, causing further issues. That’s why taking the time to get accurate measurements is essential.
What you need before you start measuring
Before you grab your measuring tape, first check whether you still have the original gas strut. If you do, it becomes much easier to take measurements. If not, no worries we’ll also explain how to measure based on your application.
To measure a gas strut correctly, you’ll need:
- A tape measure or ruler
- The gas strut you wish to replace (if available)
- Pen and paper or your phone to record measurements
Key dimensions to measure
There are three main measurements you need when determining the correct gas strut size:
Extended length
This is the length from the centre of one mounting point to the centre of the other when the gas strut is fully extended. It is one of the most critical measurements and ensures that your new gas strut fits within the designated space when opened.
Stroke length
This is the difference between the extended length and the compressed length. It tells you how much the strut travels during operation and directly impacts how it functions.
Diameter of the rod and cylinder
The thickness of both the rod (the narrow part) and the cylinder (the wider body) affects the strength and pressure of the gas strut. Measuring these ensures compatibility with the original or required force capacity.
No gas strut? Use our calculator tool
If your original gas strut is missing or too damaged to measure, don’t panic. Our free gas spring calculator tool helps you determine the right size and force. Simply input the dimensions of your application, such as weight, angles, and mounting positions, and our tool does the rest. This is the safest way to get accurate results without guesswork.
Find an exact match with our replacement tool
Have a part number or brand on your gas strut? Our replacement tool is your best friend. Just enter the product number, and the tool finds the equivalent model available in our shop. It’s quick, easy, and saves time.
Customise your gas strut with our configurator
Already know what you need? Try our configurator tool to customize gas struts by selecting length, force in Newtons, material, and mounting components. You can also preview your design in 3D before adding it to your basket. Perfect for tailored applications!
Let us help you measure your gas struts
Still unsure or need confirmation? Our team is here to help. Send us your measurements or photos of your current application, and we’ll guide you through the best options. Contact us.
Frequently asked questions
How do I measure the length of a gas strut?
Measure from the centre of one end fitting to the centre of the other while the gas strut is fully extended. This gives you the extended length, which is crucial for finding a suitable replacement.
What if I don’t have the original gas strut?
Use our online calculator tool to simulate your application. Enter key parameters like weight and angles, and the tool recommends the ideal gas strut for your needs.
Can I use any gas strut as a replacement?
Not always. Even if it looks similar, the force, length, or mounting style might differ. Use our replacement tool to find an exact match.
What does Newton (N) mean in gas struts?
Newton (N) is a unit of force. It tells you how much lifting or supporting force the gas strut can exert. Choosing the correct Newton rating is essential for safe and smooth operation.
Do I need to install gas struts in a specific direction?
Yes. Most gas struts should be installed rod-down (narrow part down) to ensure proper lubrication of the seal and longer lifespan.
