Your Professional Suspension Manufacturer!
Founded in 2016, Shandong Jieyun Automobile Technology Co., Ltd. is a professional manufacturer specializing in the research, development, production, and sales of semi-trailer axles, suspension systems, and related components. Located in Liangshan, China’s well-known special vehicle industrial base, the company operates advanced production lines and a strict quality management system. Its products include American- and German-type axles as well as customized suspension solutions, widely used in wind power transportation, heavy equipment logistics, and container transport. With reliable product quality, strong technical support, and global service capabilities, the company exports to Europe, North America, the Middle East, and Southeast Asia.
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![German-style Air Suspension]()
German-style Air SuspensionRepresenting the pinnacle of European trailer engineering, our German-style air suspension system is engineered for unparalleled ride stability, precise load management, and superior protection for -
![Single-point Suspension]()
Single-point SuspensionSingle-point suspension consolidates the entire suspension system into one robust, centrally mounted assembly per axle. This innovative design replaces traditional multi-link setups with a -
![American-style Air Suspension]()
American-style Air SuspensionEngineered for the North American heavy-duty market, our American-style air suspension delivers reliable, high-capacity performance with straightforward serviceability. Characterized by its -
![RV Air Suspension]()
RV Air SuspensionEngineered specifically for recreational vehicles, our RV Air Suspension system replaces traditional steel springs to deliver an unparalleled travel experience. It actively adjusts to road conditions -
![Heavy-duty Air Suspension]()
Heavy-duty Air SuspensionDesigned for the world's most demanding on- and off-highway applications, our heavy-duty air suspension system provides exceptional load support, superior ride quality, and unparalleled durability. -
![Air Suspension On Dump Trailer]()
Air Suspension On Dump TrailerEngineered specifically for the punishing lifecycle of dump trailers, our Air suspension on dump trailer is designed to manage extreme shock loads, uneven terrain, and frequent load/unload cycles. It -
![Heavy Truck Air Suspension]()
Heavy Truck Air SuspensionEngineered as the critical interface between a heavy-duty truck and the road, our heavy truck air suspension system is designed to optimize performance, protect cargo, and enhance driver comfort over -
![Truck Front Air Suspension]()
Truck Front Air SuspensionOur Truck Front Air Suspension system redefines the driving experience for heavy-duty vehicles by replacing traditional steel leaf springs. Engineered specifically for the steering axle, it delivers -
![Air Suspension Front Suspension]()
Air Suspension Front SuspensionExperience a revolution in driving dynamics with our purpose-engineered Air Suspension Front Suspension. This system replaces conventional steel springs with a precision air suspension setup on your -
![Rear Air Suspension]()
Rear Air SuspensionEngineered to transform your vehicle's rear-end performance, our premium Rear Air Suspension System provides unparalleled adaptability. It seamlessly adjusts to varying loads and road conditions, -
![Front Air Suspension]()
Front Air SuspensionOur Front Air Suspension System is engineered to deliver a transformative driving experience by replacing rigid coil or leaf springs with adaptive air technology. This system provides unparalleled -
![Semi-trailer Air Suspension]()
Semi-trailer Air SuspensionDesigned for heavy-duty hauling, our semi-trailer air suspension is a game-changer for long-haul truckers and fleet managers. It blends reliable performance, smooth ride quality, and durability to
Why Choose Us
Advanced Equipment
Our factory boasts a modern production line covering the entire process from material preparation, welding, machining to assembly and painting. We are equipped with advanced CNC machine tools, robotic welding workstations, and fully automated painting lines to ensure product precision and consistency.
ODM/OEM Service
We possess strong R&D and customization capabilities, enabling us to provide customized axle and suspension solutions based on the standards and requirements of different overseas markets. Our products serve multiple sectors, including trucks, trailers, and construction machinery.
High Quality
We strictly adhere to the IATF 16949 quality management system and have a professional testing center that comprehensively monitors raw materials, processes, and finished products to ensure the safety and reliability of our products.
Production Market
In terms of regional markets, our products have successfully entered several key global markets. In Europe, we focus on high-safety products that meet ECE standards; in North America, our trailer axles have obtained DOT certification; and we have also established stable sales networks in the Middle East and Southeast Asia.
Advantages of Suspension
Stable Load-Bearing Performance
Engineered with reinforced suspension structures and optimized load distribution design, our suspension systems provide stable support under continuous heavy-duty transportation conditions. This helps improve vehicle balance, reduce structural stress, and maintain reliable performance during long-distance operation.
Reduced Road Vibration
Precision suspension geometry and advanced damping integration help absorb road impact and reduce vibration caused by uneven terrain and rough road conditions. This contributes to improved vehicle stability and reduced stress on chassis components.
Improved Ride Comfort
Our suspension systems are designed to improve driving comfort and operational smoothness by minimizing excessive vehicle movement and shock transfer. Air suspension configurations provide enhanced ride quality for commercial transportation applications.
Reinforced Heavy-Duty Structure
Manufactured using high-strength steel materials and reinforced structural components, our suspension systems are built to withstand demanding heavy-load environments. Optimized structural rigidity helps reduce deformation risks and improve long-term durability.
Reduced Tire Wear
Stable axle alignment and balanced load distribution help minimize uneven tire wear during vehicle operation. This contributes to longer tire service life, reduced maintenance frequency, and lower fleet operating costs.
Long Service Life
Controlled manufacturing processes, precision component matching, and high-quality materials help improve fatigue resistance and reduce abnormal wear under repeated heavy-load cycles. This supports long-term operational reliability and lower maintenance downtime.
Applications of Suspension
Automotive
One of the most common uses of suspension systems is in vehicles, where they maintain tire contact with the road and provide a smoother ride by absorbing shocks from bumps and potholes. In cars, a well-functioning suspension system enhances stability, comfort, and safety.
Construction
In construction, suspension systems are vital for vibration control. Skyscrapers and bridges often use suspension components like dampers and springs to absorb shocks from wind, earthquakes, and other forces. This ensures that the structure remains stable and minimizes damage during such events.
Industrial Machinery
Heavy industrial machines also rely on suspension systems to stabilize loads and reduce vibration. Systems like conveyor belts, drilling machines, and compressors use suspension elements to protect sensitive components and improve the lifespan of the equipment.
Aerospace
In aerospace engineering, suspension systems are critical in both the structural and mechanical design of aircraft. The landing gear, for instance, must absorb significant impact forces during landing. Suspension components ensure that the aircraft lands smoothly and safely.
Architecture
Suspension systems are employed in architecture, particularly in the construction of cable-suspended bridges and large buildings. Suspension bridges, for example, use cables and towers to hold the weight of the bridge and allow for expansion and contraction due to wind or temperature changes.
Types of Suspension
MacPherson Strut Suspension
The MacPherson strut suspension is on͏e of th͏e most popular ͏types o͏f ͏independent suspension͏ syste͏ms in modern cars, parti͏c͏u͏larly f͏ront-͏wheel-drive͏ c͏ars. It c͏ombin͏es͏ a shock ab͏sorber a͏nd a coil spring ͏into a single͏ unit͏, savi͏ng space and ͏w͏eigh͏t.
Double Wishbone Suspension
T͏he dou͏ble wishbo͏n͏e suspen͏si͏on, also known as͏ an͏ A͏-͏arm suspens͏ion͏, uses two c͏ontrol arm͏s (upper and lowe͏r) that ͏resemble a wishbone. The double wish͏bo͏ne setup͏ ensures ͏that th͏e wheel re͏ma͏ins vertical to the grou͏nd durin͏g suspensio͏n͏ travel, improving gr͏ip a͏nd handling. This setup allo͏ws͏ for better control over wheel mo͏tion, cam͏ber, and alignmen͏t. This makes it ͏ideal for performance and luxury vehicles.
Multi-link Suspension
A͏ multi-li͏nk suspension ͏system͏ ͏consists of several͏ ͏con͏trol arms (links)͏ that conn͏e͏ct the w͏hee͏l hub t͏o the chassis͏. Th͏is desi͏gn offers͏ exceptional flexibili͏ty in tuning the susp͏ension to ba͏lan͏ce comfort and performanc͏e, making it ͏popul͏ar͏ ͏in ͏luxury and h͏igh-pe͏rfor͏mance cars.
Leaf Spring Suspension
The leaf spring suspension is ͏one of the ol͏d͏es͏t types of suspensio͏n systems, used primarily in heavy-duty trucks and ve͏hicles designed for carrying large ͏l͏oads. ͏It consists of several metal strips (leaves) stacked on top ͏of each other, forming a s͏pring that absorbs shock͏s͏ and distribute͏s weight evenly ͏across͏ the axle.
Solid Axle Suspension
A sol͏id ax͏le suspension (or live a͏xle su͏spensi͏on) fe͏atures a ͏rigid ax͏le that co͏nnects the͏ two wheels͏ on a͏n axle. T͏he move͏ment ͏o͏f͏ one ͏wheel affects ͏t͏h͏e oth͏er͏, making ͏it ͏a ͏dependent suspension system. Solid͏ axles͏ are co͏mmonly used in trucks, SU͏Vs, and off-road ve͏hic͏les due to their dura͏bi͏lity and a͏bility ͏t͏o ha͏nd͏le rugg͏e͏d ͏terrain.
Air Suspension
Air suspen͏sion replaces traditional springs with air-filled rubber bags, allowing for adjustable ride height and super͏i͏o͏r͏ comfort. This suspension is commonly found in luxury͏ vehicles ͏and ͏h͏eavy-d͏uty trucks.
Hydraulic Suspension
Hydra͏uli͏c suspension uses h͏ydraulic flu͏id to adjust the͏ vehicle’s suspension height and stiffnes͏s dynamica͏lly. This type of suspension is often used ͏in performance cars ͏a͏nd specialize͏d v͏ehicles like low͏-r͏iders.Hydraulic actuators filled with fluid adjust the suspension height and damping characteristics, allowing for rapid adjustments in response to road conditions.
Torsion Beam Suspension
A torsion ͏beam ͏susp͏ension i͏s a simple, co͏st-e͏ffect͏ive s͏yste͏m often found͏ in compac͏t car͏s. It ͏u͏ses ͏a s͏olid beam th͏at twists to absorb road͏ s͏hocks.
Coil Spring Suspension
C͏oil spr͏ing suspension is one of t͏he most comm͏only used typ͏es͏ of ͏su͏spension syst͏ems i͏n mo͏de͏r͏n cars͏. I͏t uses coiled ͏metal spring͏s to abso͏rb shocks͏ ͏and maint͏ain t͏he vehicle’s he͏ight.
Electronic Suspension Systems
Electronic ͏su͏spension systems are advanced systems that adjust the suspens͏io͏n’s stiffn͏ess and damp͏ing in real-time based on r͏oad͏ condit͏io͏ns and driving behaviour. These s͏yst͏ems, ͏als͏o known as adap͏tive or active suspension, are found in luxury and high-perf͏o͏rm͏ance vehicles.
Springs: Support the weight of the vehicle and allow up and down movement to absorb bumps in the road. These come in coil, leaf, torsion bar and air springs.
Dampeners: Control spring oscillations, keeping the vehicle in control over bumps and through turns. Dampeners include shock absorbers, struts and coilovers.
Linkages: Connect the chassis and suspension. These include control arms, compression/tension arms, radius arms, lateral links, trailing arms and track bars.
Pivot points: Allow for the various movements in the suspension system. Pivot points include bushings, ball joints and strut mounts.
Knuckles and spindles: Provide a connection point for steering and suspension linkages. They also serve as mounting components for brakes and wheel bearings.
Wheel bearings: Allow for low-friction rotation of the wheel and tire assembly and serve as a mounting point for the wheel.
Wheels and tires: Connect the vehicle to the ground and provide traction for acceleration, braking and turning.
Technical Parameters
|
Item |
Specification |
|
Suspension Capacity |
10T–60T |
|
Suspension Type |
Air / Mechanical |
|
Material |
High-Strength Steel |
|
Surface Treatment |
Powder Coating |
|
Inspection |
100% Tested |
|
OEM Service |
Supported |
|
Fatigue Testing |
Available |
|
Packaging |
Export Standard |
Packaging and Shipping
FAQ
As one of the leading suspension manufacturers and suppliers in China, we also support customized service. Please feel free to buy high quality suspension made in China here from our factory. For pricelist, contact us now.
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