9T 11T Lifting Type Beam Air Suspension for Semi Trailers – American Series

DescriptionOverviewThis heavy-duty lifting and unlifting type semi trailer air suspension is engineered for high-capacity, smooth and efficient vehicle performance. It connects the trailer frame to the axle system, distributes loads evenly, and effectively reduces road vibration. Especially designed for the American market, it improves ride quality and load handling for various trailer types such as flatbeds, tankers, lowbeds, and skeletal trailers.Compared with traditional leaf spring suspensions, this air suspension system provides lower weight, better shock absorption, and improved fuel efficiency. By adjusting the air volume in the shock absorber, it can control ride height and stiffness, ensuring greater driving stability and cargo protection under variable road conditions.ApplicationOur semi trailer air suspensions are widely used in:Flatbed, lowbed, van, tanker, and dump trailersCar carriers and agricultural transportersFull trailers and special-purpose vehiclesFeaturesQC ManagementComplies with IATF 16949:2016Warranty18 months from shipping dateMaterial SourceQ235 steel from top 3 Chinese mills for high load enduranceCutting MethodCNC Plasma MachinesWeldingAutomated CNC Welding RobotsSurface TreatmentShot-peening and automatic coatingAnnual Output50,000 setsExport Markets30 countries incl. USA, Brazil, Poland, Egypt, VietnamHeavy Duty Suspension ParametersModelAxle LiftCapacity (kg)Axle Beam (mm)Air Bag (mm)L1L2H1H2H3WDASL09LR002Yes9000Φ127350/260490210320482265WDASL11LR001Yes11000Φ146350/260490210272415385ModelAxle LiftCapacity (kg)Axle Beam (mm)Air Bag (mm)L1L2H1H2H3WDASL09UR001No9000Φ127350490210272430265Why Choose WONDEE Air SuspensionOur lifting type beam air suspensions are lightweight yet durable. They help reduce tire wear, improve fuel efficiency, and offer excellent shock absorption. In addition, the adjustable ride height simplifies loading and unloading operations.Moreover, thanks to their automatic adjustment mechanism, they maintain stable driving performance under various road conditions. This suspension type is ideal for operators who prioritize smooth rides, cargo safety, and reduced maintenance.Production & LogisticsOther Air Suspension TypesComponents & Parts