Volvo Composite High Carbon Brake Discs

• Being a world leading professional brake parts manufacturer, Winhere produces more than 55 million units of brake discs and 10 million sets of brake pads annually for OEM and IAM. 

• 96%+ car parc coverage of brake discs and brake pads from A to Z for both passenger cars and commercial vehicles. 

• IATF16949, ISO14001, ISO45001, ECE R90, CNAS certificated. 

• National Green Manufacturer and China’s Champion Enterprise awarded by M.I.I.T. and C.F.I.E. 

• National Standard of “Brake Disc for Automobile” GB/T 34422-2017 is led by National Quality Supervision and Inspection Center for automobile parts, Winhere is the responsible drafting company for this national standard.

Core Product Features

1. Directional slotted friction‑surface design

   Precision‑machined directional slots run across the friction ring. The slot geometry continuously scrapes away brake‑pad glaze, burnt residue and fine dust during braking. It prevents glazing build‑up which would normally cause fading, squeal and inconsistent pedal feel under repeated heavy stops.

2. Vented inner vane construction for high thermal capacity

   Inner ventilated vanes create forced air circulation. Compared with solid rotors, it dissipates massive heat generated during aggressive street‑driving cycles. It suppresses heat soak even under successive hard braking events.

3. Optimized slot depth without compromising structural integrity

   Slots are machined to controlled depth, not fully penetrating the disc. It avoids creating stress‑concentration cut‑through points. The disc retains sufficient material strength to resist cracking under elevated temperature and mechanical shock.

4. Stress‑relieved casting base material

   Every rotor goes through stress‑relief annealing post‑casting. Internal residual stress generated in casting process is eliminated. It minimises risk of thermal warping when exposed to frequent high‑temperature cycling.

5. Precision‑controlled surface flatness and lateral run‑out

   Fine finishing on friction surface and mounting face. Strict tolerance on hub bore, PCD and overall thickness guarantees direct bolt‑on installation. Minimal run‑out after fitment avoids steering wheel shake complaint.

Application Scenarios

1. Enthusiast street driving

   Frequent hard braking, highway emergency deceleration. Slotted surface maintains clean pad‑to‑rotor contact, delivers reliable pedal feedback for performance‑oriented daily vehicles.

2. Mountain‑road driving

   Continuous downhill braking cycles. Ventilation structure evacuates heat quickly, slots clear pad glazing, effectively resist brake fade on winding mountain routes.

3. Wet‑condition daily operation

   Slots help expel surface water film during rainy‑day braking. Shorten wet‑surface response time for initial bite.

4. Light performance upgrade for SUV and passenger cars

   Aftermarket upgrade for family cars and SUVs. Fits users pursuing better braking response without full race‑car modification.

• 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