✅ Factory Direct: 300mm extended length standard struts (approx. 12").
✅ Custom Force: We calibrate Nitrogen pressure (50N-1200N) to your specs.
✅ OEM Components: Choice of Ball studs, Eyelets, or Clevis brackets.
✅ Industrial Grade: QPQ Nitriding rod & Fluororubber seals (-40°C~+80°C).
✅ 50,000 Cycles: Tested for durability ensuring low maintenance costs.
✅ MOQ 200pcs: Competitive bulk pricing & private labeling available.
Looking for a precise 300mm gas strut? Colewell Machinery specializes in manufacturing high-performance 300mm (12 inch) gas springs for automotive OEMs, furniture manufacturers, and industrial equipment suppliers. Unlike generic retail parts, our 300mm gas struts are engineered for high-cycle reliability and precise force control. Whether you need a replacement for a car hood or a soft-close solution for a kitchen cabinet, our struts ensure smooth lifting and damping, operating flawlessly in temperatures from -20℃ to +80℃.
| Force Range | 100N to 1000N (Customizable based on application). |
| Dimensions | Extended Length: 300mm Standard. Stroke: Configurable based on opening angle. |
| Material | Cylinder: Galvanized Steel or Stainless Steel. Rod: Hard Chrome Plated or QPQ Nitriding. Seals: High-quality Fluororubber. |
| Operating Temp | Standard: -20℃ ~ +80℃; Special Model: -40℃ ~ +120℃. |
We offer two distinct types to match your structural design:
● Compression Type: Support force is consistent with installation direction (Standard lift).
● Tension Type: Support force is opposite to installation direction (Reverse traction), ideal for pull-down structures.
Stroke Margin: We recommend reserving a 10%~20% stroke margin to prevent bottoming out and extend service life.
High-Speed Adaptation: For high-frequency motion (e.g., robotic arms), select our high-response models to effectively suppress vibration and noise.
● Industrial Standards: Fully compliant with ISO 9001 and TS 16949 (Automotive Industry).
● RoHS Compliant: Eco-friendly materials protect in-car air quality with no harmful gas release.
● SGS Verified: Independent testing confirms precise opening/closing force control and smooth operation.
● Installation Interface: Standard (Ball/Fork/Eye) or custom joints with ±0.1mm tolerance to match original positions.
● Precise Force: We accurately calculate the required Newton force based on your door weight for one-handed operation.
● Functionality: Optional anti-smashing rebound buffer and limit protection design.
● Appearance: Custom surface treatments and colors available to seamlessly match the vehicle body.
Automotive Hoods & Hatches
The 300mm length is ideal for compact engine hoods, glove boxes, or trunk compartments, ensuring secure positioning without slamming.
Furniture & Cabinets
Used in kitchen cupboards, toy boxes, and recliner mechanisms. The 300mm strut provides smooth damping for high-end furniture.
Standard "Golden Size" (approx 12") fits 90% of universal brackets, making it the perfect OEM replacement part.
We customize the Newton force (100N-1000N) specifically for your project for effortless one-handed operation.
Features QPQ Nitriding rod and Fluororubber seals, highly resistant to rust and scratching compared to standard chrome.
Wide range of connectors: Ball Studs, Eyelets, and Brackets ensuring easy installation for any application.
A Leader in Gas Spring Manufacturing
Colewell Machinery stands out as a premier gas spring manufacturer with a strong emphasis on quality, innovation, and customer satisfaction. Our high-quality products, advanced manufacturing capabilities, and extensive global reach make us a trusted partner for businesses worldwide. Whether you are looking for standard 300mm gas springs or customized solutions, our expertise ensures that we deliver the best products to meet your needs.
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