AZ9112340006 Brake Drum Howo Rear

AZ9112340006 rear brake drum is a critical braking part for SINOTRUK HOWO series rear axles, mainly used for HOWO T7H, T5G, A7, TX heavy-duty trucks, as well as HOWO mining dumpers and engineering vehicles. It pairs with brake shoes and friction linings to achieve vehicle deceleration and parking through friction. When braking, it takes most of the friction force and high heat generated, so it must have strong high-temperature resistance, wear resistance and thermal fatigue. It's suitable for heavy-load long-distance transport, mountain long downhill, mining area and construction site operations. Adopting one-piece precision casting, its wall thickness is evenly distributed, heat dissipation is fast, no deformation or cracking under high temperature, ensuring stable braking force, no vehicle deviation or brake shaking during braking, effectively guaranteeing driving safety.

①Applicable Vehicles: Special for rear axles of SINOTRUK HOWO T7H, T5G, A7, TX series, also fits HOWO dumpers, mixers and engineering vehicles with the same rear brake structure.

②Adaptable System: Fully matches the original vehicle's rear brake components, including brake shoes, friction linings, wheel hub, bearing and mounting bolts. No need to modify mounting position, interface size or braking structure; directly replace the old one after disassembly.

③OE Reference Number: AZ9112340006

④Interchangeability: Strictly follows original factory dimensions, including inner diameter, outer diameter, width, wall thickness, mounting hole position and quantity. It can directly replace the original rear brake drum, no secondary machining, debugging or welding needed, saving half of the maintenance time.

⑤Value-added Service: Our technical staff will confirm the fitment according to your vehicle model, rear axle type and chassis number. We also provide simple pre-installation inspection and post-installation braking test tips to avoid braking deviation caused by improper installation.

Core Materials

The brake drum adopts high-quality gray cast iron (HT200) with added manganese and chromium alloy elements, which enhances its high-temperature resistance and wear resistance, and improves thermal conductivity, so it can quickly dissipate heat during braking, avoiding thermal deformation and cracking. The friction surface is specially treated to increase hardness, reduce wear, and extend service life. The mounting flange is made of high-strength cast iron, which is firm and not easy to deform, ensuring tight connection with the wheel hub.

Surface Treatment

The outer surface is sprayed with high-temperature anti-rust paint, which has strong adhesion, is not easy to fall off, and can effectively prevent rust and corrosion in humid, dusty and other harsh environments. The inner friction surface is precision turned and polished, with high flatness and smoothness, ensuring uniform contact with the friction lining, improving braking efficiency, and reducing abnormal noise during braking. The mounting flange surface is precision milled to ensure tight fit with the wheel hub.

Production Craftsmanship

Adopts resin sand precision casting + CNC machining + heat treatment process. Resin sand mold ensures dense internal structure of the brake drum, no sand holes, shrinkage cavities or cracks. CNC machining ensures accurate dimensions, uniform wall thickness, and consistent mounting hole position. Heat treatment strictly controls temperature and time to improve material hardness and toughness. Each brake drum is inspected one by one before leaving the factory to ensure qualified performance.

①Quality Grade: OE-equivalent, meets SINOTRUK HOWO vehicle standards and national heavy-duty vehicle brake component requirements. Passed 2,800-hour thermal fatigue test and 45,000-time braking cycle test, stable performance in heavy-load and high-temperature environments.

②Inspection Items: Dimensional accuracy, material hardness, thermal fatigue resistance, surface treatment, internal defect detection, mounting hole position accuracy and friction surface flatness.

③Quality System: The factory has passed IATF16949 and ISO9001 quality system certification, implementing full-process quality control from raw material procurement to finished product delivery.

④Batch Tracking: Each brake drum is laser-engraved with OE number, batch number and production date, clear and wear-resistant. All production and inspection records are kept for more than 3 years for full traceability.

• Average Service Life: Under normal operation, the average service life is more than 4.5 years (420,000km), consistent with the original brake drum. For mining and long-downhill conditions, the service life can reach more than 3 years (300,000km).
• Performance Advantages: HT200 material with alloy elements has good high-temperature resistance and wear resistance; uniform wall thickness ensures fast heat dissipation and avoids brake fade; precision-machined friction surface ensures stable braking and low noise.

• Environment Adaptability: It can work stably at -40℃ to 580℃, suitable for alpine, high-temperature, humid and dusty environments. Strong impact resistance, can adapt to road jolts during heavy-load operation.

Common Fault Optimization

Aiming at common faults of original brake drums, such as high-temperature deformation, cracking, uneven braking, excessive wear and brake fade, we optimized material ratio, wall thickness distribution and surface treatment. The improved brake drum effectively solves these problems, avoids safety hazards caused by brake failure, and reduces maintenance frequency.

Maintenance & Replacement Value

It has a simple structure, easy to disassemble and assemble, and maintenance personnel can replace it on site with common tools, saving maintenance time and labor costs. It is fully compatible with the original vehicle, no debugging needed after installation, and can be put into use quickly. Stable performance and long service life reduce vehicle downtime and user operating costs.

Packaging Configuration

Adopts heavy-duty shockproof packaging: inner layer is thick EVA foam, middle layer is plastic protective cover, outer layer is reinforced corrugated carton. The brake drum is fixed with a positioning bracket to avoid collision, deformation and friction surface damage during transportation. The friction surface is covered with plastic film to prevent dust and rust. Matching mounting bolts and washers are independently packaged and put into the carton.

Marking Specifications

Outer Carton: Printed with OE number, product name, applicable vehicle model, quantity, batch number, gross weight and net weight, marked with moisture-proof, shock-proof and fragile signs. Export orders are attached with English, Russian and Arabic installation instructions.

Product Marking: Laser-engraved with OE number, inner diameter and batch number on the outer surface, wear-resistant and not easy to fade, easy to identify.

Customization Service: We provide neutral packaging and support LOGO customization. The printing content, language and carton size of the outer carton can be adjusted according to customer needs.

①Inventory Status: Sufficient stock of AZ9112340006, covering all applicable HOWO models, supporting immediate spot delivery for urgent orders.

②MOQ: 2 pieces; bulk orders (more than 45 pieces) enjoy tiered price discounts; large customized orders can adjust production cycle according to delivery time.

③Delivery Cycle: Spot orders are shipped within 24-48 hours; bulk orders are shipped within 8-12 days. Foreign trade orders provide one-stop customs clearance services and full set of export documents, optional transportation methods.

④Stability: Stable raw material supply chain and mature production lines ensure monthly output of more than 3,800 pieces, no delivery delay.

①Certification Qualifications: Passed IATF16949 and ISO9001 certification. Third-party test reports are available for import and export needs.

②Quality Guarantee: 27-month warranty. Free return and replacement for non-human faults such as cracking, deformation, excessive wear and uneven braking.

③Technical Support: 24-hour online technical team, providing installation guidance, fault diagnosis and maintenance tips.

④Return Policy: We bear round-trip freight for quality-related returns; free replacement for transport-damaged products.

Q1: Is it compatible with all HOWO T7H/T5G/A7/TX rear axles?

A1: Yes, fully compatible. Provide your vehicle model and rear axle type for precise confirmation.

Q2: What should I pay attention to during installation?

A2: Clean the mounting interface, fasten bolts according to specified torque, check the fit with brake shoes, and test braking to ensure no deviation.

Q3: Do you support foreign trade customization?

A3: Yes, neutral packaging, LOGO customization, and full set of export documents are available.

Q4: What if the brake drum cracks during warranty?

A4: Provide fault photos, batch number and vehicle model, we will replace it for free and bear all freight.

Installation Requirements

Disconnect power, remove rear wheel, check brake drum integrity and friction surface condition; clean mounting flange and wheel hub interface; install brake drum, fasten bolts evenly; adjust brake clearance, install rear wheel and test braking.

Regular Inspection

Check for deformation, cracking and rust every 15,000km; measure inner diameter and wear degree, replace if exceeding limit; clean friction surface regularly; re-tighten loose bolts in time.

Storage Requirements

Store in dry and ventilated warehouse, away from corrosives and high temperature; place horizontally to avoid deformation; cover friction surface with plastic film; unopened shelf life is 12 months.

Replacement Tips

Replace when there is braking deviation, fade, deformation, cracking or excessive wear. It is recommended to replace brake shoes together for better braking effect. Test braking after replacement.

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