Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of upper air chamber in China. Please feel free to buy durable upper air chamber made in China here from our factory. All customized products are with high quality and competitive price.
Core Advantages
Precision-Machined Sealing Surfaces - The upper chamber features accurately machined sealing faces that interface with the air spring bead plate and sealing ring. Surface finish and flatness are controlled to ensure an airtight seal at operating pressures typical of air suspension systems, preventing leakage and maintaining consistent ride height.
Multiple Material & Process Options - Available in steel (stamped or machined), aluminum (CNC-machined or forged), and stainless steel for corrosive environments. Material and process selection are based on load requirements, weight targets, and corrosion exposure. Steel offers high strength for heavy-duty applications; aluminum provides weight savings for passenger vehicle and EV platforms.
Integrated Mounting Features - Chamfered mounting holes, locating dowels, and threaded bosses are incorporated into the chamber design to facilitate accurate alignment with the chassis frame and lower air spring assembly. These features reduce assembly time and ensure consistent installation positioning across vehicle builds.
Chamber Geometry Options - Available in single-chamber configurations for standard air spring applications, and dual chamber air suspension upper parts for applications requiring load leveling and frequency-selective damping capabilities. The dual-chamber design incorporates additional internal features for advanced suspension functions.
Corrosion Protection - Steel upper air chambers are available with zinc plating, Dacromet, or e-coat finishes for underbody corrosion resistance. Aluminum versions are anodized or chem-film coated to prevent galvanic corrosion at aluminum-steel interfaces.
High-Volume Production Capability - Machining and stamping lines support production volumes from prototype quantities to mass production. Consistent part geometry ensures reliable air spring sealing and proper vehicle ride height across millions of production miles.
Dimensional & Sealing Validation - Critical sealing surfaces are verified on CMM equipment for flatness and surface finish. Each production lot is sample-tested for air-tight sealing integrity before shipment. Dimensional reports and sealing validation data accompany each batch.
Technical Specifications
|
Parameter |
Details |
|
Product Name |
Upper Air Chambers - Mounting Components for Air Suspension Systems |
|
Materials |
Steel (hot-rolled/cold-rolled), Aluminum (6061/6082), Stainless Steel |
|
Manufacturing Process |
CNC machining, stamping, forming, welding, coating |
|
Configurations |
Single-chamber, dual-chamber |
|
Key Features |
Sealing surface; mounting holes; locating dowels; bead plate retention |
|
Tolerances |
Sealing face flatness ±0.05mm; mounting holes ±0.15mm |
|
Surface Treatment |
Zinc plating, Dacromet, e-coat, anodizing, chem-film |
|
Quality Systems |
IATF 16949 certified manufacturing |
Manufacturing Process
|
Stage |
Key Operations |
Quality Gates |
|
Material Prep |
Sheet/plate cutting → blanking → material verification |
Thickness; flatness; material certificate |
|
Forming/Machining |
Stamping/deep drawing or CNC machining → feature creation |
Profile dimensions; hole positions; surface finish |
|
Welding (if required) |
Component joining → bead plate retention features |
Weld penetration; joint integrity; distortion check |
|
Coating & Final |
Surface preparation → coating (zinc/Dacromet/e-coat/anodize) → final inspection |
Coating thickness; salt spray resistance; sealing face validation |
Quality Control
Forming/Machining Phase
Sealing face flatness and surface finish are verified on CMM equipment. Hole positions and mounting feature dimensions are checked to ensure alignment with chassis and air spring assembly. Wall thickness is measured to confirm structural integrity.
Coating Phase
Coating thickness is measured per lot. Salt spray testing is performed on sample basis to validate corrosion resistance for underbody exposure conditions.
Final Release
Sealing face flatness and finish are verified on 100% of high-volume production. CMM inspection of all critical dimensions is performed on sample basis. Sealing integrity validation is performed on sample basis per lot. Inspection documentation accompanies each batch with full traceability.
Application Scenarios
Single-Chamber Air Springs - Standard Suspension Applications
Upper air chambers in single-chamber air spring configurations are used for passenger vehicles, SUVs, and light trucks requiring load leveling and ride height adjustment. The machined upper chamber provides accurate mounting for the air spring bellows and bead plate assembly.
Dual-Chamber Air Springs - Advanced Suspension Applications
Dual chamber air suspension upper parts are used in applications where load leveling is combined with frequency-selective damping. The dual chamber design provides both ride height control and variable damping characteristics for improved ride comfort and handling stability across varying load and road conditions.
Heavy-Duty Commercial Vehicle Applications
Steel upper air chambers with Dacromet or e-coat finishes provide high-load capacity and corrosion resistance for trucks, buses, and vocational vehicles. These components are engineered to withstand the high operating pressures and extended service life requirements of commercial vehicle air suspension systems.
Custom Services
Engineering consultation
Chamber geometry and material recommendations based on your air spring type, load requirements, and vehicle platform
Custom design
Single-chamber or dual-chamber configurations; mounting hole patterns; sealing surface specifications per your drawing
Process selection
Stamping for cost-effective high-volume; CNC machining for precision and flexibility; forging for maximum strength
Surface treatment
zinc plating, Dacromet, e-coat, anodizing, chem-film per your corrosion protection standard
Sample support
Prototype quantities for assembly validation and sealing integrity testing
Production volume
From prototype through high-volume production
Whether you need air spring upper mounting plates for passenger vehicle air suspension, machined upper air chambers with precision sealing surfaces, or dual chamber air suspension upper parts for advanced applications - our engineering team supports your project from design through machining, coating, and production delivery.
Contact Us for Your New Project
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