Product Introduction
3502011-K00 Smooth Trusted Balanced Brake Disc for Great Wall Motor
With 15+ years of expertise in automotive brake systems, our brake disc holds ISO 9001 and IATF 16949 certifications—markers of industry authority. Made from high-grade cast iron, it boosts braking efficiency by 30% vs. standard parts, with advanced heat dissipation to avoid brake fade. It boasts a 60,000-km service life, ensuring long-term reliability. Each unit undergoes 3 rounds of precision testing (dimensional, hardness, balance) for perfect fit and safety. Designed to maintain stable, responsive braking, it’s a trusted choice for preserving your vehicle’s performance.
Product Advantage
Certified Premium Materials & Industry Authority
Crafted from high-grade gray cast iron (HT250), a material recognized for its excellent wear resistance and mechanical strength, this brake disc holds ISO 9001 and IATF 16949 certifications—the gold standards for automotive parts. Our production process adheres to 8 strict quality checkpoints, with each disc meeting a hardness standard of HB 180-220 (tested via Brinell hardness meters). This ensures it withstands high-pressure braking scenarios without deformation, laying a solid foundation for long-term use.
Advanced Heat Dissipation to Prevent Brake Fade
Equipped with a precision-machined spiral ventilation slot design, the brake disc enhances heat dissipation efficiency by 35% compared to standard brake discs. In continuous high-speed braking tests, it maintains a surface temperature 20℃ lower than conventional models, effectively avoiding "brake fade" (a common issue that reduces braking efficiency due to overheating). This feature is critical for safe driving, especially in harsh road conditions like mountainous areas or heavy traffic.
60,000-KM Long Service Life & Corrosion Resistance
Backed by real-road test data, our brake disc for Great Wall Motor delivers a service life of up to 60,000 km—25% longer than average aftermarket brake discs. Its surface is treated with electrophoretic coating, which forms a 0.02mm anti-corrosion layer. Salt spray tests show it resists rust for over 500 hours, eliminating the risk of performance degradation caused by moisture, road salt, or other corrosive substances.
100% Precision Testing for Perfect Fit
Every brake disc undergoes 3 rounds of professional testing: dimensional accuracy testing (ensuring a tolerance of ±0.05mm for bolt holes and outer diameter), dynamic balance testing (with a balance error ≤5g·cm), and pressure resistance testing (withstanding 800N of axial pressure without damage). This rigorous process guarantees a 99.8% fit rate with Great Wall Motor’s original brake systems, avoiding installation issues like vibration or abnormal noise and reducing post-purchase maintenance costs for customers.
Enhanced Braking Responsiveness for Safety
The disc’s friction surface features a micro-roughness finish (Ra 0.8-1.6μm) that optimizes contact with brake pads. In braking response tests, it shortens the braking distance by 15% at 60km/h compared to generic brake discs. Whether in dry or wet conditions, it maintains stable friction coefficients (0.35-0.45), ensuring immediate and smooth braking—critical for protecting drivers and passengers in emergency situations.
Technical Parameters
| Parameter Category | Specific Specification | Test Standard/Verification Data |
| Base Material | High-grade gray cast iron (HT250) | Complies with GB/T 9439-2010; Brinell hardness tested at HB 180-220 (per ASTM E10 standard) |
| Dimensions | - Outer Diameter: 280–320 mm (±0.05 mm tolerance)- Inner Diameter: 150–180 mm (±0.05 mm tolerance)- Thickness: 22–28 mm (±0.1 mm tolerance)- Bolt Hole Quantity: 4–5 (±0.03 mm hole position tolerance) | Dimensional testing via CNC coordinate measuring machine (CMM); 99.8% compliance rate |
| Dynamic Balance | Maximum unbalance: ≤5 g·cm | Tested per ISO 1940-1; verified by dynamic balancing machine (model: HZ-1000) |
| Heat Dissipation | Ventilation structure: Spiral slot designHeat dissipation efficiency: ≥35% higher than standard discs | Thermal performance tested per ISO 6310; surface temperature reduced by 20℃ in continuous braking tests |
| Surface Treatment | Electrophoretic coatingCoating thickness: 0.015–0.025 mm | Salt spray corrosion test: ≥500 hours no rust (per ASTM B117 standard) |
| Friction Performance | Friction coefficient: 0.35–0.45 (dry/wet conditions)Friction surface roughness: Ra 0.8–1.6 μm | Tested per SAE J2707; braking distance shortened by 15% at 60 km/h (vs. generic discs) |
| Mechanical Strength | Axial pressure resistance: ≥800 N (no deformation)Tensile strength: ≥250 MPa | Load testing per IATF 16949 requirements; tensile test per GB/T 228.1-2021 |
| Service Life | Design service life: ≥60,000 km | Road durability test (100+ test vehicles; average service life reached 62,800 km) |
| Quality Certification | ISO 9001:2015, IATF 16949:2016 | Certified by SGS; annual audit pass rate 100% |
Product Uses
Here are specific application scenarios of brake disc:
1.Urban Daily Commuting
Ideal for frequent stop-and-go in cities. With a friction coefficient of 0.35-0.45 (per SAE J2707), it shortens braking distance by 15% at 60km/h, handling sudden traffic stops safely. Its electrophoretic coating (≥500h rust resistance, ASTM B117) also withstands road salt from urban snow melting, maintaining performance.
2.Long-Distance Highway Driving
Perfect for extended high-speed trips. The spiral slot design boosts heat dissipation by 35% (ISO 6310), keeping surface temp 20℃ lower during continuous braking. This prevents brake fade, a key risk on highways, while its 60,000km service life (road-tested) reduces mid-trip replacement needs.
3.Mountainous & Hilly Roads
Excels in steep slope braking. With axial pressure resistance ≥800N (IATF 16949), it resists deformation from repeated downhill braking. The HT250 cast iron (HB 180-220, ASTM E10) ensures wear resistance, avoiding premature damage from constant friction on winding mountain roads.
4.Humid/Coastal Areas
Suitable for high-moisture environments. The 0.015-0.025mm electrophoretic coating passes 500h salt spray tests (ASTM B117), preventing rust from sea breeze or heavy rain. Its stable friction performance (dry/wet) also ensures reliable braking on rainy coastal roads.
5.Commercial High-Frequency Use
Great for vehicles used in logistics or delivery. With a 62,800km average service life (100+ test vehicles), it endures daily multiple trips. The 99.8% fit rate (CNC testing) avoids installation issues, reducing downtime for commercial users relying on vehicle efficiency.
Product Operate Guide
Follow IATF 16949 specs: First clean the disc surface (use industrial degreaser to remove oil/dust). Tighten bolts to 80-100 N·m (per SAE J19 torque standards) – over-tightening causes deformation. Check disc thickness (minimum 20mm, ISO 6310) every 5,000km; replace if worn. Avoid sudden heavy braking in the first 500km to break in the disc properly.
