Semi-Trailer Air Suspension

1. Product DescriptionThe Semi-Trailer Air Suspension from Junchi Heavy Industry is a high-performance suspension system designed to replace traditional leaf spring suspensions. It uses air bags (bellows) to provide adjustable ride height, superior shock absorption, and load leveling. Ideal for sensitive cargo, high-value freight, and applications requiring smooth ride quality. Compatible with most semi-trailer types including container carriers, flatbeds, vans, and tankers.2. Specifications & ModelsParameterSpecificationModelJC-AS-2AX / JC-AS-3AX / JC-AS-4AXAxle Configuration2 axles / 3 a...

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E-mail：junchitrailer@gmail.com

Detailed Description

1. Product Description

The Semi-Trailer Air Suspension from Junchi Heavy Industry is a high-performance suspension system designed to replace traditional leaf spring suspensions. It uses air bags (bellows) to provide adjustable ride height, superior shock absorption, and load leveling. Ideal for sensitive cargo, high-value freight, and applications requiring smooth ride quality. Compatible with most semi-trailer types including container carriers, flatbeds, vans, and tankers.

2. Specifications & Models

Parameter	Specification
Model	JC-AS-2AX / JC-AS-3AX / JC-AS-4AX
Axle Configuration	2 axles / 3 axles / 4 axles
Load Capacity per Axle	10 – 13 tons
Total Load Capacity	20 – 52 tons (depending on axle count)
Air Bag Type	4-bellows per axle (2 per side)
Ride Height Adjustment	± 100mm (from standard 1,250mm 5th wheel height)
Lifting Function	Electronic or manual lift axle control (optional)
Height Control Valve	WABCO or Haldex (3-point or 5-point)
Shock Absorbers	Twin-tube hydraulic (standard)
Axle Beam Material	High-strength steel (integral or split type)
Bushings	Rubber or polyurethane (maintenance-free option)
Weight (3-axle system)	1,200 – 1,500 kg (complete with axles)
Certification	ISO 9001, DOT (optional), ECE R107 (optional)

3. Applications

Container semi-trailers: Reduces vibration damage to container contents
Car Carrier Trailers: Smooth ride for finished vehicles
Liquid tankers: Prevents liquid surge and sloshing
Powder bulk tankers: Protects delicate aeration system components
Side curtain trailers: Reduces pallet and package damage
Refrigerated vans: Protects temperature-sensitive goods (fruit, medicine, electronics)
Livestock trailers: Reduces animal stress and injury during transport

4. Compatible Models

The Junchi air suspension system is compatible with most semi-trailer types:

Trailer Type	Compatibility
Container flatbed	Yes (standard)
Side curtain trailer	Yes (standard)
Van truck / Box trailer	Yes (standard)
Liquid tanker	Yes (with tank-specific calibration)
Powder bulk tanker	Yes (with low-profile option)
Lowbed / Drop deck	Yes (with lowered ride height calibration)
Tipper / Dump Trailer	Not recommended (high shock loads)
Log trailer	Optional (with reinforced air bags)

Fifth wheel height compatibility: Adjustable from 1,150mm to 1,400mm via ride height valves.

5. Advantages, Benefits & Quality Assurance

Advantages:

Feature	Benefit
Air bag cushioning	70% less vertical shock compared to leaf springs
Load leveling	Automatic adjustment for uneven loads
Adjustable ride height	Lowers for loading / raises for clearance
Lift axle option	Reduces tire wear when running empty
Reduced cargo damage	Up to 40% less product damage claim
Smoother ride	Less driver fatigue

Quality Assurance:

Component	Warranty
Air bags (bellows)	3 years / 300,000 km
Height control valves	2 years
Shock absorbers	2 years / 100,000 km
Axle beams	3 years / 300,000 km
Bushings	2 years

Certifications: ISO 9001, DOT (USA – optional), ECE R107 (Europe – optional), GOST (Russia)

6. Company Profile

Junchi Heavy Industry, founded in 2010 in Shandong, China. Factory: 86,000 m², 3 welding lines, 2 painting shops, dedicated air suspension assembly line. Employees: 320 (45 engineers, 10 suspension specialists). Annual capacity: 2,500 units (trailers) + 1,500 air suspension kits. Exported to 52 countries including Russia, Kazakhstan, Indonesia, Vietnam, Chile, Nigeria, Saudi Arabia, UAE.

7. Q&A

Q1: Shipping method?
Complete air suspension system (axles + air bags + valves + shocks) is packed in steel frames or wooden crates. Shipped via 20ft or 40ft container. For urgent orders, air freight available.

Q2: Price?
FOB Qingdao:

JC-AS-2AX (2-axle system, complete): $3,200 – $4,800
JC-AS-3AX (3-axle system, complete): $4,500 – $6,800
JC-AS-4AX (4-axle system, complete): $5,800 – $8,800
Lift axle control (electronic): +$800 – $1,500
Premium shock absorbers (upgraded): +$300 – $600
WABCO height control valves (premium): +$400 – $800

Price includes: air bags, axles, shock absorbers, height control valves, air lines, fittings, and installation manual. Excludes: tires, wheels, brake chambers (unless specified).

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