“Rear Brake Disc: Material Composition & Dimensional Standards

Description

Rear brake discs are precision-engineered from High-Carbon Grey Cast Iron (Grade G3000) to provide superior thermal conductivity and essential vibration damping for a quiet ride. To ensure maximum safety and performance, these components must adhere to strict SAE J431 and ISO 26867 standards, which regulate material hardness and structural integrity. Dimensionally, they are held to rigorous tolerances, maintaining a lateral run-out of less than 0.05mm and a thickness variation under 0.01mm. This extreme precision is critical to preventing brake pedal pulsation, ensuring uniform pad wear, and maintaining stable friction levels under intense heat.