Custom Nitrogen Spring Manufacturer for Precision Die & Mold Applications
Discover the next generation of Nitrogen Springs engineered for consistent performance and reliability. Our advanced design guarantees superior stability under varying loads while meeting the rigorous demands of industries ranging from automotive to medical devices.
At Wenzhou Cungang Precision Technology Co., Ltd., we bring you Nitrogen Springs crafted with unparalleled precision and advanced engineering. Our products deliver exceptional performance and durability, ensuring efficiency in applications from hardware stamping molds to semiconductor and medical device production.
A nitrogen gas spring is a type of gas spring that uses nitrogen gas as the compressible medium to provide force assistance or resistance. It consists of a cylinder, a piston, and a gas-filled chamber. The nitrogen gas is stored in the chamber under high pressure, and the piston is sealed to prevent gas leakage.
Our Nitrogen Spring Range
Miniature Nitrogen Gas Spring
Micro nitrogen gas springs are elastic components that use high-pressure nitrogen as the working medium and achieve elastic force output through the compressibility of nitrogen. Their core structure includes a cylinder, a piston rod, a sealing assembly, and a charging valve.
Through precise design, the volume of traditional nitrogen gas springs is reduced to the millimeter level while maintaining a high output force density. Their typical application scenarios cover precision molds for electronic devices, micro mechanical transmission systems, medical devices, and aerospace fields, providing stable elastic force support in limited spaces.
Technical Highlights Of Miniature Nitrogen Gas Springs
High-precision Elastic Force Control
The initial inflation pressure (10 - 150 bar) is adjusted to achieve linear elasticity adjustment, with an error range controlled within ±1.5%, ensuring the stability of precision stamping or blanking processes.
Long Service Life and Low Maintenance
The inert nitrogen medium and special sealing design (such as fluororubber O-rings) enable the service life to exceed 5 million cycles, which is 10 times longer than that of traditional springs.
Rapid Response and Dynamic Performance
The nitrogen compression and expansion speed reaches 300mm/s, with a response time of less than 0.01 seconds, meeting the requirements of high-speed automated production lines.
Modular Integration Capability
Supports the series connection of multiple micro nitrogen gas springs through the pipeline system to achieve pressure synchronization or gradient control, simplifying the design of multi-station molds.
Resistance to Extreme Environments
The temperature resistance range has been expanded to -40℃ to 120℃. The sealing components have passed the salt spray test for 480 hours and are suitable for aerospace or deep-sea exploration equipment.
Compact Nitrogen Gas Spring
Compact nitrogen gas springs (such as J-type nitrogen gas springs, MQC ultra-compact nitrogen gas springs) are special elastic components developed to meet the space-height-sensitive scenarios in mold and mechanical design.
Their core design objective is to provide high elastic output within a limited space while meeting the requirements of high precision, long service life, and easy installation.
Technical Highlights Of Compact Nitrogen Gas Spring
Wide Range of Compression Pressure
The MQC type nitrogen spring can reach an inflation pressure of 15 MPa, with a stroke ranging from 10mm to 125mm. It can meet the requirements of multiple workstations for molds.
Constant Pressure
Through the piston sealing structure, gas leakage is reduced, and the fluctuation of the elastic pressure is controlled within ±1.5%, ensuring the stability of processes such as precision stamping and edge pressing.
Longevity and Reliability
Utilizing fluorine rubber O-ring and wear-resistant coating on the piston rod (surface roughness Ra ≤ 0.02 μm), the service life exceeds 5 million cycles, which is 10 times higher than that of traditional springs.Through finite element analysis, the wall thickness of the cylinder body and the fillet radius of the piston rod transition are optimized to reduce stress concentration and adapt to high-frequency and high-load working conditions.
Modularization and Flexibility
The design of bottom screw holes and side inflation holes enables quick and independent installation. The installation time is shortened by 80% compared to traditional spring type.The MQC type can assemble a micro-pipeline system through the side air-inlet holes, enabling synchronous operation of multiple springs and being suitable for multi-station progressive dies.
Extreme Environmental Adaptability
Working temperature range is -40℃ to 80℃. The sealing components have passed the salt spray test for 480 hours, suitable for extreme environments such as marine and aerospace.Integrated dust-proof sealing ring is adopted to prevent iron filings and oil stains from entering the cylinder body, thereby prolonging the service life.
Economic Efficiency and Ease of Maintenance
A single nitrogen spring can replace multiple sets of traditional springs, reducing the complexity of molds and installation space, and saving on material and labor costs.No need for lubrication. Just check the inflation pressure regularly. The maintenance period can be extended to over 2 years.
Why Choose Our Nitrogen Springs?
Nitrogen gas springs offer several advantages over traditional mechanical or hydraulic springs. Some of the key advantages include:
Compact size
Nitrogen gas springs are compact and lightweight, making them suitable for applications with limited space. Their small size also allows for easy installation and integration into existing systems.
High energy density
Nitrogen gas springs have a high energy density, meaning they can store and release a significant amount of energy in a small volume. This makes them ideal for applications requiring high force in a compact package.
Consistent force
Nitrogen gas springs provide consistent force over a wide range of temperatures and operating conditions. The gas remains in a gaseous state and does not change its properties significantly, ensuring reliable performance.
Non-toxic and environmentally friendly
Nitrogen gas is non-toxic, non-flammable, and environmentally friendly, making it a safe and sustainable choice for various applications. It does not pose any health risks to users or harm the environment.
Low maintenance
Nitrogen gas springs require minimal maintenance and have a long service life. Regular inspection and maintenance are necessary to ensure proper functioning and prevent gas leakage.
Nitrogen Gas Spring Accessories
Piston rod: As a force-bearing component of the nitrogen gas spring ，it directly comes into contact with the mold or mechanical components and bears external compressive or tensile forces.
Head cap: Prevent nitrogen leakage and ensure the pressure within the cylinder remains stable.
Guide bushing: Guide the piston rod to move in a straight line within the cylinder to prevent the occurrence of imbalance loading and jamming.
Seal: It is used to charge or release nitrogen into the cylinder, and to adjust the initial pressure and elasticity of the spring.
Cylinder: The housing is designed to accommodate high-pressure nitrogen gas, thereby forming a sealed pressure chamber. This is the core component of the nitrogen gas spring.
Piston:
The cylinder body is the working area where the operation takes place. The pressure is regulated by changing the volume of the nitrogen gas chamber, thereby enabling the output of the spring's elastic force.
Flow-restriction orifice:
When the nitrogen spring is subjected to an external force exceeding its designed pressure, the safety valve will automatically open and release some of the nitrogen to reduce the pressure inside the cylinder and prevent the spring from being damaged.
Nitrogen Spring Applications
Automated Production Line
Injection Mold
Custom Application Cases
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Nitrogen Gas Springs Download Resources
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A nitrogen gas spring is a type of gas spring that uses nitrogen gas as the compressible medium to provide force assistance or resistance.
Select the appropriate lubricant to ensure good lubrication; inspect the piston and the inner wall of the cylinder barrel, repair or replace defective parts; keep the installation clean to prevent impurities from entering.
Insufficient or unstable pressure
Check and fix leakage issues, ensure accurate inflation volume, use qualified inflation devices; avoid using in extreme temperature environments, or select nitrogen spring models with a wider temperature tolerance range; regularly test pressure and make timely adjustments.
Failure due to lateral stress
Ensure that the nitrogen gas spring only bears axial force and avoid lateral force; during installation, guarantee that the moving surface is on the same plane as the two end mounting points, and the joints can rotate relative to each other.
Extended stroke usage
When choosing nitrogen gas springs, reserve a stroke of 5 - 10mm. If a stroke of 70mm is required, a specification with a stroke of 80mm or above should be selected.
Problems caused by improper installation
During installation, ensure that the moving surface is on the same plane as the installation point, and the joint can rotate relative to each other; avoid tilting and deflection to guarantee correct installation.
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Wenzhou Cungang Precision Technology Co., Ltd. is mainly engaged in the research and development, production and sales of automotive mold parts, semiconductor computer molds, stamping molds, plastic molds.
