Product Introduction
A21-2909010BB Premium Optimal Certified Car Control Arm for Chery
The control arm for Chery is a pivotal part of the vehicle's suspension system. Crafted from high - strength materials like steel or aluminum, it connects the wheel hub to the vehicle's chassis.
Functionally, it enables smooth up - and - down wheel movement as the car traverses uneven roads, ensuring tires maintain optimal contact with the ground. This is crucial for stability, especially during high - speed driving, cornering, or when navigating bumps and potholes. The control arm also effectively transfers forces from the wheels to the body, handling lateral and braking forces with ease. Rigorously tested to meet industry standards, it guarantees durability and reliable performance for an enhanced driving experience.
Product Advantage
1. High-Strength Material & Precision Forging Process
Adopting high-grade 45# carbon steel (tensile strength ≥ 600MPa) and one-piece precision forging technology, the control arm for Chery achieves 30% higher structural rigidity than ordinary stamping parts. The material undergoes quenching and tempering treatment, with a hardness reaching HRC 28-32, effectively resisting deformation and wear even under long-term lateral force impact. This ensures the automotive suspension control arm maintains stable performance in complex road conditions.
2. Enhanced Bushings for Superior Vibration Damping
Equipped with high-density polyurethane bushings (Shore hardness 65±5A) that feature 20% better wear resistance than rubber alternatives. The bushings reduce road noise transmission by 15dB and absorb 80% of vertical vibrations, significantly improving driving comfort. This design extends the control arm’s service life to over 80,000 kilometers under normal use.
3. CNC-Machined Mounting Points for Precise Fit
All mounting holes and connection surfaces are processed via 5-axis CNC machining, ensuring dimensional accuracy within ±0.02mm. This precision eliminates gaps during installation, guaranteeing the control arm maintains optimal alignment with the suspension system. It reduces tire irregular wear by 25% and enhances vehicle handling stability at high speeds, meeting OEM-level quality standards.
4. Salt Spray Test & Corrosion Resistance
The control arm undergoes 1000-hour neutral salt spray testing (per ASTM B117 standard) after adopting electrophoretic coating + powder coating double protection. The coating layer (thickness ≥ 80μm) achieves a corrosion resistance rating of Grade 9, effectively preventing rust even in humid, coastal, or snowy environments. This ensures reliable performance of the Chery suspension control arm in harsh climates.
5. Load-Bearing Capacity & Safety Certification
Each control arm passes static load testing of 30kN (equivalent to 3 times the maximum working load) and dynamic fatigue testing of 2 million cycles without failure. It is certified by ISO/TS 16949 (automotive quality management system) and meets ECE R134 safety regulations for vehicle components. The robust load-bearing design ensures the control arm safely transfers braking and steering forces, safeguarding driving safety.
Technical Parameters
| Parameter Category | Specific Item | Technical Specification | Test Standard/Authority |
| Material | Main Body Material | 45# Carbon Steel (Tensile Strength: ≥600MPa; Yield Strength: ≥355MPa) | GB/T 699-2015 (Carbon Steel)
|
| Bushing Material | High-Density Polyurethane (Shore Hardness: 65±5A; Compression Set: ≤15%) | ISO 815-2018 (Elastomers) |
| Coating Material | Electrophoretic Coating + Powder Coating (Total Thickness: ≥80μm; Adhesion: Grade 0) | ISO 2409-2020 (Coating Adhesion) |
| Structural Dimensions | Overall Length | 280-320mm (Tolerance: ±0.5mm) | ISO 8015-2011 (Geometric Tolerance) |
| Mounting Hole Diameter | 12mm/15mm (Tolerance: H7, Precision Fit) | GB/T 1800.1-2020 (Size Tolerance) |
| Control Arm Thickness | 8-10mm (Uniform Thickness, No Local Thinning) | ASTM A675-19 (Steel Thickness) |
Performance
| Static Load Capacity | ≥30kN (No Deformation/ Fracture Under 30kN Static Load for 10 Minutes) | ISO 18192-1:2018 (Suspension Load) |
| Fatigue Life | ≥2,000,000 Cycles (Dynamic Fatigue Test at 5-15kN Alternating Load) | SAE J2530-2021 (Fatigue Testing) |
| Vibration Damping Rate | ≥80% (Reduces Vertical Road Vibrations) | ISO 10847:2011 (Vibration Test) |
| Corrosion Resistance | Salt Spray Test Duration | 1000 Hours (Neutral Salt Spray, No Red Rust) | ASTM B117-22 (Salt Spray Test) |
| Corrosion Resistance Rating | Grade 9 (Highest Level for Automotive Metal Components) | ISO 10289:2021 (Corrosion Grade) |
| Certification | Quality Management System | ISO/TS 16949:2016 Certified (Automotive-Specific Quality Standard) | IATF (International Automotive Task Force) |
| Safety Regulation Compliance | ECE R134 Certified (Meets EU Vehicle Component Safety Requirements) | UN ECE (United Nations Economic Commission for Europe) |
| Installation | Installation Fit Tolerance | ±0.02mm (CNC-Machined Mounting Surfaces, Gap-Free Installation) | DIN 86034:2019 (Mounting Precision) |
| Recommended Torque for Fasteners | 35-40 N·m (High-Strength Bolts Included) | ISO 898-1:2013 (Bolt Torque) |
Product Uses
Here are specific application scenarios of Control Arm:
1. Urban Daily Commuting
Ideal for frequent stop - and - go urban driving. It absorbs 80% of vibrations from uneven city roads (per ISO 10847 test), reducing driver fatigue. The high - precision mounting (±0.02mm tolerance) ensures stable handling during sudden lane changes, matching daily commuting needs.
2. Long - Distance Highway Driving
Excels in high - speed scenarios. With static load capacity ≥30kN (ISO 18192), it bears steady forces. The 2 million - cycle fatigue resistance (SAE J2530) keeps suspension stable for long trips, enhancing safety and comfort on highways.
3. Rural & Mountainous Roads
Perfect for rough rural/mountain roads. The 45# carbon steel body (≥600MPa tensile strength) resists deformation from bumps. The double - coated surface (1000 - hour salt spray resistance, ASTM B117) withstands mud and moisture, ensuring durability.
4. Coastal & Humid Regions
Suitable for coastal/humid areas. The electrophoretic + powder coating (≥80μm thickness) achieves Grade 9 corrosion resistance (ISO 10289). It prevents rust in salty air, maintaining performance in harsh humid environments.
5. Commercial Fleet Operations
Fits commercial fleets with high mileage. Its over 80,000 - km service life (from bushing wear data) reduces replacement frequency. ISO/TS 16949 certification ensures consistent quality, cutting fleet maintenance costs.
Product Operate Guide
Installation Prep: Use ISO 898 - 1 certified bolts. Check mounting surfaces for dirt; clean with a dry cloth. Ensure the arm’s ±0.02mm precision holes align with suspension parts to avoid gaps.
Installation Steps: Tighten bolts to 35 - 40 N·m (per DIN 86034). Tighten in a crisscross order for even force. Avoid over - tightening to prevent thread damage.
Post - Install Check: Test drive at low speed first. Check for abnormal noises; if any, recheck bolt torque. Conduct a suspension alignment per ISO 18192 standards.
Daily Maintenance: Inspect every 10,000 km. Check for coating peeling (per ASTM B117) and bushing wear. Replace bushings if compression set exceeds 15% (ISO 815).
