Volvo Heavy Duty Grey Hat Brake Discs

Tailored specifically for Volvo heavy-duty vehicle series, the gray-cap brake discs feature a core gray-cap composite structure delivering exceptional performance: The gray cap is cast from high-strength gray cast iron and integrally die-cast with a thickened cast iron disc body. This integrated structure offers 40% greater strength than conventional brake discs, reliably handling braking loads under full-load conditions of heavy-duty vehicles. The optimized heat dissipation pattern on the gray cap enhances cooling efficiency by 35%. During high-intensity scenarios like long descents or continuous braking, it rapidly dissipates heat, effectively suppressing thermal fade to ensure sustained and stable braking force output.

Dual Safety and Durability Assurance: Certified under ECE R90 EU safety standards and rigorously tested by Volvo Heavy Trucks OEM. The disc undergoes multi-stage quenching and low-temperature tempering, achieving HRC 32-38 hardness for superior impact resistance against gravel impacts on construction sites and unpaved roads. Featuring dual-layer anti-corrosion coating and wear-resistant surface treatment on the dust cap, the disc provides dual protection against rust caused by rain, snow, mud, and salt environments, extending service life in heavy-duty conditions.

OEM Compatibility for Convenience and Reliability: Fully matches Volvo heavy-duty brake caliper mounting specifications for direct installation without modifications. Compatible with original brake systems and auxiliary braking logic. Precision dynamic balancing reduces operational vibration, while resonance suppression optimized for heavy-duty braking characteristics ensures quiet operation without noticeable noise during braking. Designed for diverse heavy-duty applications including long-haul trucking, construction operations, and heavy-load transportation, it fortifies Volvo heavy-duty vehicles' braking safety defenses.

• 100% critical dimensions, runout and DTV inspection 

• Material physical and chemical inspection

• Test shear strength, compressibility, density, flatness and parallelism 

• Test performance and noise/NVH