Features

Material: High-quality gray cast iron, ensuring stable braking performance and high thermal fatigue resistance.
Surface: No protective coating, showing natural gray cast iron appearance.
Rust performance: Will apply anti rust oil to avoid surface rust during storage or transportation under humid conditions
Wear resistance: Stable friction coefficient, reliable braking effect, and good adaptability to heavy-duty working conditions.

Advantages

Lower cost and more economical for replacement and maintenance.

No risk of coating peeling or abnormal noise caused by coating wear.

Faster running-in with brake pads such as WVA series.

Widely compatible with commercial vehicles, trucks, trailers and various brake systems.

Application

Uncoated brake discs are widely used in heavy trucks, buses, trailers and engineering vehicles, especially suitable for aftermarket maintenance and scenarios focusing on cost-effectiveness and practical durability.

FAQs

What are the advantages of uncoated brake discs compared to coated ones?

· Lower cost Uncoated brake discs are more economical due to simpler production processes, making them highly cost-effective for aftermarket replacement.
· No coating peeling or chippingWithout surface coating, there is no risk of coating wear, flaking, or falling off during braking, which avoids abnormal noise and uneven braking.
· Faster and better running-inUncoated friction surfaces mate with brake pads more smoothly and quickly, resulting in more stable braking performance from the start.
· Higher heat resistanceCoatings may soften or deteriorate under high-temperature braking conditions, while uncoated brake discs maintain stable material performance under heavy loads and continuous braking.
· Wider compatibilityThey match most commercial vehicle calipers and brake pads (such as WVA series) better and are less likely to cause squealing or vibration issues.
· · Easier inspectionWear conditions, cracks, and heat spots can be observed directly on the uncoated surface, supporting safer maintenance and inspection.

How to Maintain an Uncoated Brake Disc

Pre-installation storage Store uncoated brake discs in a dry, ventilated environment away from moisture and dust to avoid heavy surface rust.
Rust treatment before installation Light surface rust is normal and can be gently polished with fine sandpaper. Severe rust or pitting means the disc should not be used.
Correct running-in After installation, drive 200–300 km with gentle braking; avoid sudden or heavy braking to ensure even contact between the disc and brake pads.
Regular inspection Check for uneven wear, cracks, heat spots, or deep scoring. Replace the brake disc if wear exceeds the manufacturer's limit.
Keep the braking system clean Remove oil, grease, and debris from the disc surface. Avoid lubricants touching the friction area.
Prevent long-term idle rust If the vehicle is parked for a long time, lightly apply a thin layer of anti-rust oil on the non-friction surfaces and clean it thoroughly before reuse.
Match with qualified brake pads Use high-quality brake pads that meet standards to reduce abnormal wear and extend the service life of the brake disc.