WG9112340006 Rear Axle Components SINOTRUK Brake Drum 420x185mm

SINOTRUK HOWO Brake Drum WG9112340006 | 420x185mm Heavy-Duty Rear Axle Component

Product Overview

The WG9112340006 Brake Drum is a premium-grade, heavy-duty replacement component specifically engineered for SINOTRUK HOWO and other Chinese heavy-duty truck axle systems. Primarily used on HC16 and ST16 wheel reduction axles, this brake drum is critical for maintaining high-torque braking performance and vehicle safety.

Manufactured using high-carbon HT250 (G3000) grey cast iron, our WG9112340006 model is built to withstand extreme thermal stress. Its optimized wall thickness provides superior heat sink capacity, preventing "brake fade" and surface cracking during heavy-load transport or steep downhill descents. Each drum is CNC-machined to ensure a perfect fit, providing fleet managers with OEM-level reliability at a competitive cost.

Vehicle Compatibility

This brake drum is a direct-fit solution for the following heavy-duty platforms:

Truck Brand: SINOTRUK (HOWO, HOWO A7, T7H, T5G, Steyr).

Axle Type: HC16, ST16, and AC16 Wheel Reduction Axles (16-ton series).

Axle Position: Rear Drive Axles.

Application: Mining tippers (dump trucks), long-haul logistics trucks, and heavy-duty construction vehicles.

Technical Specifications

Accurate technical data is the cornerstone of technical SEO and customer confidence. Here are the key specs for WG9112340006:

Cross-Reference & Interchange

To ensure you are ordering the correct part for your HOWO fleet, this model is interchangeable with:

SINOTRUK: WG9112340006 / WG9112 340006

Related Models: AZ9112340006 (Commonly used interchangeably in the aftermarket)

Aftermarket Ref: Various specialized Chinese truck parts brands.

Key Benefits

Exceptional Heat Dissipation: The specialized high-carbon alloy allows the drum to cool rapidly, reducing thermal fatigue and protecting brake linings.

Precision Dynamic Balancing: Every drum is factory-balanced to eliminate vibration at high speeds, extending the life of your wheel bearings and tires.

Reinforced Structure: Engineered with a heavy-duty flange to maintain perfect circularity even under extreme mechanical pressure and high temperatures.

Smooth Braking Performance: Fine-machined friction surface ensures quick "bedding-in" with new brake shoes for immediate stopping performance.

Global Standard Quality: Manufactured under IATF 16949 quality management systems to meet or exceed original equipment life cycles.

Frequently Asked Questions (FAQ)

1. Which truck models is the WG9112340006 Brake Drum compatible with?

The WG9112340006 Brake Drum is a precision-engineered OEM replacement specifically designed for Sinotruk HOWO (70t/90t) heavy-duty trucks and vehicles equipped with Steyr (STR) axles. It is widely used in construction, mining, and long-haul logistics. To ensure a 100% perfect fit, we recommend verifying the 10-hole mounting pattern and checking the internal diameter against the original part number WG9112340006 before installation.

2. What material is used for the WG9112340006 to handle heavy-load heat?

Our WG9112340006 drums are manufactured from high-grade G3000/G3500 Grey Cast Iron. This high-carbon alloy is selected for its superior thermal conductivity and heat dissipation properties. In heavy-tonnage applications, this material prevents the drum from "bell-mouthing" (thermal expansion) and resists brake fade, ensuring reliable stopping power even under extreme payloads and steep descents.

3. Does the WG9112340006 Brake Drum come dynamically balanced?

Yes, every WG9112340006 unit undergoes rigorous precision dynamic balancing at the factory. For heavy-duty Sinotruk models, an unbalanced drum can lead to significant chassis vibration, steering "shudder," and accelerated wear on wheel bearings and hub seals. Our balanced drums ensure a smooth rotation, improving driver comfort and reducing the total cost of ownership (TCO) by protecting the entire wheel-end assembly.

4. How do I know when to replace my Sinotruk WG9112340006 Brake Drum?

Safety is the top priority for heavy-duty hauling. You should inspect the WG9112340006 during every brake lining change and replace it if:

The Wear Limit is Reached: The internal diameter meets or exceeds the Maximum Diameter (Max Dia) limit stamped on the outer rim.

Severe Heat Checking: You notice deep radial cracks that cannot be removed by machining.

Surface Distortion: If you experience pulsing in the brake pedal, it may indicate that the drum has become "out-of-round" due to localized overheating.