100N Universal Gas Struts UK – Applications, Selection & Fitting Guide
Where 100N gas struts are used in the UK
- Automotive: Ideal for light boot strut replacement, smaller tailgate gas strut set-ups, lightweight bonnets and campervan cupboard doors. Common on small hatchback boots, tool compartments and campervan overhead lockers.
- Furniture: Popular as an ottoman bed gas strut for compact mattresses/slats, storage benches and cabinet door gas strut lifts where lids are light to medium.
- Marine & Caravan: Suits deck lockers, cockpit seats, caravan cupboard doors and small hatches where corrosion-prone areas need steady lift support.
- Industrial: For light industrial machine cover strut uses, service panels and instrument enclosures where controlled opening is required.
Technical & weight capacity guide (100N ≈ 10 kg)
As a rule of thumb, 100 N lifts roughly 10 kg under ideal geometry. This applies per gas strut.
- Using one 100 N gas spring → plan for ~10 kg lid under favourable leverage.
- Using two 100 N gas springs (one each side) → plan for ~20 kg combined, often more stable for wide lids (boots, ottoman beds).
- Real-world geometry matters: hinge friction, mounting distance from hinge and centre of gravity often require a safety factor of 1.2–1.5×. If the lid is heavy or over-sized, step up to a higher Newton rating or use a pair.
Ottoman bed size guide (manufacturer guidance)
The notes below help customers pick a suitable ottaman bed gas strut by common UK mattress widths. Use as a quick reference alongside the 100 N rule-of-thumb above.
- 600 N struts: Ideal for storage beds in 2 ft Small Single, 3 ft Single and 4 ft Small Double sizes.
- 800 N struts: Perfect for 4 ft Double and 5 ft King beds.
- 1000 N & 1200 N struts: Heavy-duty and ideal for 6 ft Super King beds, ensuring exceptional lift capacity for larger beds.
Note: Bed frames, hinge positions and mattress weights vary; if in doubt, select the next strength up or use a matched pair for balanced lifting.
Installation & fitting tips
- Install rod down: Fit with the chrome rod at the bottom when closed. This keeps the internal seal lubricated and extends service life.
- Replace in pairs on wide lids: Boots, tailgates and ottoman beds usually perform best with two matching struts for even lift and alignment.
- Mounting geometry: Start with the body end near the hinge and the rod end on the lid, at roughly 30–40% of the lid length from the hinge. Adjust to achieve a firm open position without slamming.
- Test before final drilling: Mock-up with temporary brackets or existing holes, then mark final positions. Small changes in leverage make a big difference.
- Ball studs & brackets: Ensure ball size and thread (e.g., M6/M8) match your end fittings. Use washers/spreader plates on thin panels (caravans, campervans, machine covers).
- Do not twist the rod: Avoid gripping the chrome rod with tools; any scoring will damage seals.
Mounting advice by application
- Automotive (boot/tailgate/bonnet): Support the lid during swap. If one side has failed, change both for matched lift. Confirm clearance around lights/trim.
- Furniture (ottoman bed/cabinets): Check hinge strength and frame fixings. A central safety strap helps with heavy mattresses.
- Marine & Caravan: Use stainless or coated hardware where possible and seal fasteners to prevent water ingress.
Durability & maintenance
- Regular cycling: Open/close occasionally to keep internal seals lubricated, especially in seasonal vehicles or caravans.
- Cleanliness: Wipe the rod with a soft, lint-free cloth. Do not oil the rod; avoid silicone sprays that attract dust.
- Storage: Store unused struts rod down in a clean, dry place. Avoid heat sources and direct sunlight.
- Environment: For coastal or high-salt areas, inspect fixings more frequently and rinse off salt deposits.
Micro-FAQs
Will a 100 N gas strut lift my ottoman bed?
Possibly for lighter slat + mattress combos when used as a pair. If the bed is heavier, move to higher Newton ratings (e.g., 120–200 N) or adjust mounting points for better leverage.
Is 100 N suitable for a boot strut replacement?
It can be for small/light hatchbacks, typically as a pair. Check your vehicle’s original spec; heavier tailgates usually need higher ratings.
Can I use one 100 N strut instead of two?
For narrow cupboard doors or small hatches, yes. For wide lids (tailgates, ottoman beds), two struts provide balanced lift and reduce hinge stress.
