The WG9761450001 heavy-duty rear brake drum is a critical braking component engineered for Sinotruk heavy commercial vehicles. Manufactured from high-grade alloy cast iron, it delivers exceptional tensile strength, superior heat dissipation, and outstanding wear resistance. Under continuous heavy-load conditions, it effectively minimizes brake fade, reduces vibration and noise during braking, and maintains consistent friction performance over extended service life. Every dimension strictly follows OE specifications, enabling direct bolt-on replacement with no modifications required. Widely used in tractors, dump trucks, and logistics transport vehicles, this brake drum is an ideal aftermarket spare part for heavy truck operators worldwide. Our factory supports bulk wholesale and OEM customization to meet diverse procurement needs.
Material & Manufacturing Process
The brake drum is constructed from high-chromium alloy cast iron. The manufacturing process begins with precision sand casting and rough turning, followed by stress relief annealing to eliminate internal casting stresses — preventing deformation and cracking under repeated heavy braking. The inner friction surface is then precision-machined via CNC to ensure exceptional roundness and a smooth finish. Dynamic balancing is performed to prevent eccentric wear. Rigorous quality inspection, including visual examination and hardness testing, ensures zero internal porosity, sand holes, or other defects, significantly extending service life compared to ordinary cast iron brake drums.
Technical Parameters
| Parameter | Specification |
|---|---|
| OE Number | WG9761450001 |
| Application Position | Rear Axle |
| Matched Axle | MCP16 16-ton MAN reduction axle |
| Material | Alloy cast iron |
| Installation | Direct OE replacement |
| Key Features | Heat-resistant, crack-resistant, stable friction performance |
| Recommended Applications | Heavy-load transportation, construction and mining operations |
Applicable Vehicle Models
Fully compatible with Sinotruk heavy trucks equipped with MCP16 MAN axles:
- HOWO T7H, HOWO T5G, HOWO TX, HOWO TX MAX
- Sitrak C7H, Sitrak G7
Also fits 6×4 and 8×4 tractor heads, mining dump trucks, and bulk cargo transport trucks.
Installation Notes
- Verify the axle hub matching dimensions and clean the mounting contact surface before installation.
- Replace brake shoes at the same time as the brake drums.
- Avoid prolonged emergency braking during the break-in period.
- Regularly inspect the drum wall thickness and check for surface cracks during routine maintenance.
- If abnormal noise or severe eccentric wear occurs, discontinue use immediately and replace the drum.
Quality Assurance
Every production batch undergoes dimensional inspection, hardness testing, and dynamic balance verification in accordance with original equipment standards. Our strict quality control system ensures consistent, reliable performance. As a factory-direct supplier, we offer competitive pricing and fast lead times for truck parts distributors worldwide.
