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Compression Gas Spring (Gas Strut) - Technical Guide
Overview
Compression Gas Spring (also known as Gas Strut, Gas Spring, Gas Lift, or Support Rod) is an industrial component that uses high-pressure inert gas (typically nitrogen) to provide controlled support, buffering, and lifting force. It's widely used in applications requiring precise, smooth motion control.
Core Function
Through compressed nitrogen, gas springs provide stable lifting force to assist in opening, supporting, and cushioning heavy components.
Typical Applications
- Automotive: Tailgate, engine hood, trunk lid
- Medical Devices: Maintenance covers, bed adjustment mechanisms
- Furniture: Flip-up doors, cabinet doors, height-adjustable tables
- Industrial Machinery: Equipment enclosures, maintenance covers, safety guards
Key Technical Specifications
| Parameter | Range | Description |
|---|---|---|
| Force (N) | 50 - 5,000 | Determines support capacity |
| Stroke (mm) | 19 - 700 | Piston rod extension distance |
| Full Length | Custom | Overall extended length (center-to-center) |
| Rod Diameter | 6 - 14 mm | Affects bending stiffness and sealing |
| Cylinder Diameter | 15 - 40 mm | Relates to internal gas volume |
Selection Guide
- Define Application: Specify the use case and required motion.
- Measure Lengths: Record the extended and compressed center-to-center distances.
- Determine Force: Calculate the necessary force based on load and geometry.
- Choose End Fittings: Select fittings compatible with your mounting points.
- Select Options:
- Damping: Damping performance is customizable.
- Protection: Consider special coatings or stainless steel for corrosion resistance.
End Fittings
- Ball-joint sockets
- Eyelets and clevis
- Brackets and studs
Options
- Damping performance is customizable
End Fittings Category
Quality Certifications
Testing & Curves
Standard Test Conditions
Test Speed
400 mm/min
Temperature
20°C
Gas Spring Force Curve Visualization
Default Configuration (Standard 165mm stroke)
Gas Spring Force Curve
Custom Examples
Heavy Duty (800N, 200mm)
Light Duty (200N, 100mm)
Four-Point Force Definition
Force at 10mm before full extension
Nominal lifting force (main selection criterion)
Force at 10mm before full compression
Extension start force
Force at 10mm after full extension
Compression start force
Force at 10mm before full compression
Final force before full compression