Buying a gas strut isn’t just about grabbing one that “looks about right.” Whether you’re propping open a ute canopy or replacing a worn-out cabinet lift, choosing the wrong strut can lead to poor performance, mechanical strain, or even safety hazards. So, what actually matters when you’re selecting a gas strut?
Let’s break it down into digestible, practical terms.
1. Load Rating (Force in Newtons)
This is perhaps the most critical factor. The Newton (N) rating tells you how much force the gas strut exerts. Too little, and it won’t support the weight. Too much, and you might struggle to close the panel.
As a rule of thumb:
- Light-duty (cabinet lids, storage boxes): 100–400N
- Medium-duty (toolboxes, caravans): 400–800N
- Heavy-duty (tailgates, machinery, car bonnet gas struts): 800–1200N and up
Getting this number right ensures smooth function and longevity.
2. Extended & Compressed Length
Strut length determines the range of motion. If your gas strut doesn’t extend or retract to the proper distance, it could jam or fail to open fully. Measure from the center of each mounting point with the strut both fully extended and fully compressed.
Most reputable suppliers—like Schutts Industrial—offer sizing guides or help with measurements to ensure a perfect match.
3. Stroke Length
This is the difference between the compressed and extended lengths. A longer stroke allows for greater opening angles, which is important in things like gullwing doors or under-bed storage mechanisms.
4. Mounting Style & End Fittings
Here’s where a lot of DIYers get tripped up. Gas struts come with different types of end fittings:
- Ball sockets (10mm is common)
- Clevis ends
- Eyelets
- Brackets and angle fittings
You’ll want to match your new strut’s end fittings to the mounting hardware already in place—or swap them out to suit the new strut’s dimensions.
5. Damping Speed (Slow or Standard)
Need your panel to glide open softly, or just snap into position? Damping determines the extension speed and how “gentle” the movement feels. Some gas struts include oil damping for soft-close functions—great for furniture or overhead cabinets.
For example, if you’re replacing a car bonnet gas strut, a steady, controlled open speed prevents accidents or overextension.
6. Temperature & Environmental Resistance
Not all gas struts are created equal—if you’re using one in a marine, outdoor, or high-heat environment, make sure it’s designed for that.
Look for:
- Stainless steel construction
- Protective coatings
- Temperature-rated seals
Struts that fail in extreme conditions can become brittle or lose pressure over time.
Pro Tip: Don’t Guess—Get It Matched
The safest way to choose a replacement? Let the experts take a look. Schutts Industrial offers precise matches or custom-built struts using just a few measurements and details. They’ll guide you to a strut that fits your needs without the guesswork.
Final Thought
Choosing the right gas strut isn’t rocket science, but it is engineering. A little attention to spec makes all the difference in safety, performance, and lifespan. Whether you’re replacing a failed strut or building something entirely new, understanding what matters helps you make a confident, well-informed choice.
