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SINOTRUK HOWO Heavy Truck Spare Parts QF2900250-B4N036 WG9518522000+024 Air Spring Airbag


Original Equipment Manufacturer (OEM): SINOTRUK (China National Heavy Duty Truck Group Co., Ltd.)
Primary Application: Rear axle air suspension system in heavy-duty trucks
OEM Part Number: WG9518522000
Common Variants: WG9518522000+003, WG9518522000-003 (suffix may indicate specific configuration or batch)
Product Type: Double Bellow / Rolling Lobe Air Spring (Pneumatic Rubber Spring)
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  • WG9518522000

  • Shacman Sinotruk HOWO

Parameter Description
Type Double Convolute Rolling Lobe Air Spring (Bellows Style)
Main Material High-quality natural rubber blend with synthetic fiber reinforcement (e.g., nylon or polyester cord layers)
Structure Multi-layer reinforced rubber bellows with upper and lower metal mounting plates
Mounting Method Bolt-on installation via top and bottom studs/plates (exact stud count/dimensions depend on model; typically M10–M14)
Air Inlet Port Standard pneumatic connection: NPT 1/4" or metric equivalent (e.g., M16×1.5 straight fitting)
Operating Pressure Range Typically 5–8 bar (72–116 psi), depending on load and vehicle settings
Effective Area Designed to match OEM suspension dynamics (specific value not public, optimized for load capacity)
Extended Height Approx. 220–240 mm (varies by fitment; design-specific)
Compressed Height Approx. 120–140 mm (depends on load and inflation status)
Outer Diameter (Max) Approx. 200–220 mm
Load Capacity Variable based on air pressure; supports several tons per spring (designed for rear tandem axle loads)
Temperature Range -40°C to +90°C (-40°F to 194°F)
Durability Features Ozone-resistant, UV-resistant, anti-aging rubber formulation; crack-resistant under repeated flexing
空气弹簧气囊-5
空气弹簧气囊-3
空气弹簧气囊-2


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