A replacement gas lift cylinder is the heart of any office or gaming chair. When your chair starts sinking or fails to hold its height, it's time for an upgrade. Colewell's replacement gas lift cylinders are engineered to universal industry standards (Standard 2-inch/50mm diameter), making them compatible with 99% of office chairs, executive chairs, and stools on the market.
Our cylinders are not just spares; they are upgrades. Featuring Class 4 safety ratings (the highest standard) and reinforced steel walls, they provide superior stability, smooth rotation, and heavy-duty weight support compared to standard OEM parts.
| Safety Class | Class 3 & Class 4 (BIFMA X5.1 Standard). Class 4 features thicker walls for extra heavy-duty support and explosion-proof safety. |
| Dimensions (Fit) | Outer Diameter: Standard 2" (50mm). Inner Rod: Standard 1.1" (28mm). Fits almost all standard office chair bases. |
| Stroke Options | 60mm - 260mm Travel. Choose short strokes for executive chairs or long strokes for drafting stools. |
| Weight Capacity | Standard: 150kg (330lbs) Heavy Duty: 225kg+ (500lbs) for Big & Tall chairs. |
Designed with a standard Morse Taper, ensuring a tight, wobble-free fit in almost any chair base mechanism (Herman Miller, Steelcase, Secretlab, etc.).
Filled with high-purity nitrogen (99.99%). The thickened steel tube prevents gas leakage and structural failure, ensuring 100% user safety.
Includes a specialized bushing system that allows for full 360-degree rotation without squeaking or grinding noises.
• Color: Black, Chrome, or custom powder coat.
• Travel: Custom height ranges for specialized medical or industrial seating.
Restoring Comfort: Perfect for fixing sinking office chairs. Restores the ability to adjust seat height to desk level, reducing back strain.
Heavy Duty Upgrade: Our Class 4 replacement gas lift cylinders withstand the intense movement and heavier weight of premium gaming chairs.
Don't buy a new chair. A replacement gas lift cylinder restores height adjustment instantly.
We use the highest grade materials (Class 4) for maximum safety and explosion protection.
Save money by replacing the faulty part instead of the entire furniture piece.
Standard dimensions ensure our cylinders fit 99% of executive, task, and gaming chairs.
Supports up to 450lbs (200kg) with reinforced walls, ideal for heavy daily use.
Tested to exceed international safety standards (SGS/BIFMA) for peace of mind.
Colewell Machinery utilizes fully automated production lines to manufacture replacement gas lift cylinders with zero defect tolerance.
From powder coating to gas filling, every step is monitored to ensure strict adherence to BIFMA and SGS standards. We provide cost-effective, high-safety solutions for furniture manufacturers and repair businesses worldwide.
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