Car Brake Disc / Rotor
OE NO:
Vehicle Type:
Detailed Features
1. Chemical Specification
Item |
Standards |
Brake Disc |
C |
3.1–3.4 |
3.3 |
Si |
1.9–2.3 |
1.95 |
Mn |
0.6–0.9 |
0.75 |
P |
0.15 MAX |
0.1 |
S |
0.12 MAX |
0.08 |
2. Physical Properties
Item |
Standards |
Brake Disc |
Tensile Strength |
245 N/mm² MIN |
268 |
Hardness HB |
187–241 HB |
230 |
Microstructure |
A 85% MIN + B 5% MAX |
A 92% MIN + B 4% MAX |
Dynamic Balance (Disc) |
260 g-cm MAX |
200 g-cm |
Dynamic Balance (Drum) |
1300 g-cm MAX |
500 g-cm |

The brake disc, also known as the rotor, is a critical component of a vehicle’s disc brake system. It rotates with the wheel and is pressed against by the brake pads to create friction and slow down or stop the vehicle. Typically made from gray iron, this material offers excellent heat dissipation and durability.
Disc designs can vary, with some being solid and others featuring internal vanes or fins that help dissipate heat more effectively. Ventilated discs are commonly used in high-performance or heavy-duty vehicles, especially on the front wheels where more braking force is required. This design helps reduce heat buildup, improving performance and extending the life of the brake components.
Our Advantages:
3. **Professional Manufacturing** – We have advanced foundry electric furnaces and production lines, capable of producing up to 5,000 tons per month.
4. **Long Service Life & Quality Warranty** – Our brake discs are designed for long-lasting use and come with a warranty of 1 year or 100,000 km.
5. **Strict Testing & Dynamic Balancing** – Every product undergoes rigorous testing to ensure stability and performance during driving.
6. **Material**: Cast Iron, meeting HT-250 and G3000 standards.
7. **Design Options**: Available in solid or vented styles.
8. **Packing**: Neutral or color cartons with wooden pallets.
9. **Certifications**: TS16949, ISO 9002, and short-term export credit insurance.
10. **Export Experience**: With many years of exporting experience, we are familiar with various certifications and customs regulations.
11. **Short Lead Time**: 20 days for a 20' container.
12. **Flexible Orders**: Accept small quantities (MOQ 10–30 pcs) for first orders.
13. **Custom Production**: We can develop and produce complex parts, including size modifications, chemical formula adjustments, and special surface treatments like DACROMET, zinc plating, black coloring, drilled holes, and scored lines.
14. **Quality Assurance**: 100% inspection of crucial dimensions and machined surfaces.
15. **Accepting Drawings/Samples**: We can design and develop new brake disc or rotor models based on your drawings or samples.
16. **Brake Drums Also Available**: We offer a wide range of brake drums as well.
We are a global trading company with products sold in countries such as the Czech Republic, Lithuania, Georgia, Australia, the Middle East, and Africa. Our customers appreciate both our high-quality products and reliable service. We also have a dedicated R&D team to support continuous innovation and improvement.
Welcome to contact us for inquiries or to visit our facility. The Baiwang series of car and truck brake discs and drums offer a wide variety of models and specifications, making them a strong advantage for our clients.

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