Micro gas springs, also known as micro gas struts, are compact gas-powered support devices designed to deliver smooth, controlled lifting, supporting, or damping motion in confined spaces. These micro gas springs and micro gas struts are widely used in applications where space is limited but precise motion control is required, such as small enclosures, lids, and lightweight panels.
Core Definition and Working Principle
A micro gas spring is essentially a miniaturized version of a standard gas spring. These micro gas springs consist of a sealed cylinder, a piston rod, compressed gas (typically nitrogen), and a small amount of lubricating oil.
When an external force compresses the piston rod, the gas inside the cylinder is compressed, storing potential energy. Once the force is released, the compressed gas expands and pushes the piston rod back to its original position. This is how micro gas struts achieve smooth motion with built-in damping, avoiding the sudden rebound typical of mechanical metal springs.
Key Features of Micro Gas Struts
Micro gas struts are designed to deliver reliable performance in compact and precision-driven applications. These micro gas springs offer advantages in motion control, durability, and adaptability in real-world use.
- Smooth and Controlled Motion
Micro gas struts provide stable lifting and damping without sudden rebound, improving user experience and operational safety
- Space-Efficient Design
Micro gas springs are engineered for installations where space is limited and standard gas springs are not suitable
- Consistent Performance
The sealed structure of micro gas struts ensures stable force output and reliable operation over long-term use
- Customizable Configurations
Micro gas springs support various end fittings and structural adaptations to meet different application requirements
- Low Maintenance
These micro gas struts are designed for long service life with minimal maintenance requirements
Product Specifications and Selection Guide
Micro gas springs come in a variety of models, sizes, and force ranges to suit different compact applications. Choosing the right micro gas struts requires understanding both available specifications and real application requirements.
Typical configurations of micro gas springs include:
- Length Range: 30 mm to 200 mm (extended length depending on model)
- Stroke Range: 10 mm to 70 mm
- Force Range: 50 N to 150 N
- Mounting Options: Ball socket, eyelet, threaded ends, brackets
When selecting micro gas struts, these specifications should be evaluated together rather than individually. The correct choice depends on how well the micro gas spring matches the application conditions.
Key selection considerations include:
- Force Rating: Must correspond to the lid or panel weight and opening angle to ensure proper performance of micro gas springs
- Extended and Compressed Length: Micro gas struts must fit within the available installation space
- Stroke Length: Determines the movement distance of the micro gas spring
- Mounting Type: Should match the structure and installation of the micro gas strut
- Application Environment: Environmental factors may affect the lifespan of micro gas springs
| Parameter |
Typical Range |
| Compressed Length |
30–50 mm |
| Extended Length |
50–200 mm |
| Stroke |
10–70 mm |
| Force |
50–150 N |
| Mounting Options |
Ball, eyelet, threaded |
Typical Applications
Micro gas springs are widely used across industries where compact, controlled motion is required:
- Small storage boxes and cases
- Consumer electronics such as laptops and flip devices
- Furniture and automotive components like cabinet doors and trunk lids
- Medical equipment with adjustable or soft-closing mechanisms
Pistol safes
Micro gas struts are commonly used in pistol safes, especially biometric gun safes such as SentrySafe and similar models.
What should you do with worn-out OEM micro gas springs for your gun safe? Most gas struts for gun safes lose pressure after a few years, making it difficult for the safe lid to lift automatically. You can replace the gas struts in your SentrySafe, and then you will find that the safe lid pops up immediately after using the biometric fingerprint. Now, you can retrieve your pistol anytime, even in an emergency, and bring your gun safe back to life.
Recommended Model Example
Gastac 7.5 inch 80N/18lb micro gas strut for gun safe is a a reliable replacement or upgrade option commonly used in SentrySafe and other models. Compared to typical 50N OEM micro gas springs, the 80N version provides faster and more stable door opening.
Customers have successfully used this micro gas strut in the following models:
- SentrySafe QAP1BE / QAP2EL – OEM gas struts typically have a 50N rating; our 80N version offers faster and more stable door opening
- Amazon Basics Biometric Pistol Safe – Often fits; check for 7.5–7.8 inch strut and ball socket type
- Stack-On PDS-1500 / QAS-1514 – Compatible mounting points and safe lid weight
- Barska AX11556 / AX11620 – Often fits directly with no modification needed
- GunVault MicroVault XL / MV500-STD – Works as a performance upgrade for quicker opening
Tip: This micro gas spring fits safes with lids weighing 5–18 lbs and using ball socket or eyelet mounts. If you’re not sure, feel free to contact us, and we’ll help you confirm compatibility.
| Parameter |
Specification |
| Stroke |
2.1 inch / 53 mm |
| Extended Length (center to center) |
7.5 inch / 190 mm |
| Compressed Length |
5.4 inch / 137 mm |
| Rod Diameter |
0.24 inch / 6 mm |
| Cylinder Diameter |
0.59 inch / 15 mm |
| Force |
80 N / 18 lb |
| Strut Length (without connectors) |
6.61 inch / 168 mm |
| Material |
Steel |
Why Choose Gastac Gas Springs
Gastac is a professional gas springs manufacturer and gas springs supplier, specializing in micro gas springs and micro gas struts.
- Manufacturing Experience: Since 2007
- Certifications: IATF 16949 and ISO 9001:2015
- Supply Capability: Bulk and wholesale supported
- Customization: OEM-friendly micro gas struts
- Quality Advantage: Stable and cost-effective
- Warranty: Two-year after-sales warranty
Gastac provides reliable micro gas springs solutions for global customers.
All brand names and product models mentioned are for compatibility reference only. We are not affiliated with or endorsed by these brands.
