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Sinotruk Sitrak Trucks
Гнездо подшипника
The AZ400741710888 Front Hub Flange Assembly (New Version) is a premium wheel-end component engineered specifically for Sinotruk Sitrak parts systems, including the popular Sitrak C7H, C5H, and HOWO T7H heavy-duty truck models. This complete hub flange assembly comes pre-fitted with high-strength wheel studs, providing a robust, ready-to-install solution for front axle applications. It ensures precise wheel alignment, reliable torque transmission, and long-lasting durability under the most severe operating conditions.
Designed to meet the rigorous demands of long-haul transportation and heavy-duty applications, the AZ400741710888 hub flange assembly delivers exceptional strength, corrosion resistance, and consistent performance, ensuring that your Sitrak truck maintains stable handling, reduced vibration, and extended wheel bearing life over millions of kilometers.
Front Hub Flange Assembly
Фланец ступицы переднего моста
Conjunto de brida de cubo delantero
Technical Specifications – AZ400741710888 Front Hub Flange Assembly
| Parameter | Specification / Value |
|---|---|
| OEM Number | AZ400741710888 |
| Product Name | Front Hub Flange Assembly With Studs (New Version) |
| Brand | SINOTRUK Sitrak |
| Material | High-strength forged steel / ductile iron (grade 65-45-12) |
| Stud Count | 10 studs (M22 × 1.5 thread) |
| Mounting Hole PCD | Φ 335 mm |
| Hub Pilot Diameter | Φ 110 mm |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Application | Front wheel hub / axle mounting |
| Compatible Models | Sitrak C7H, C5H, HOWO T7H, A7, T5G, and other SINOTRUK trucks |
| Service Life | 150,000–200,000 km under normal conditions |
| Quality Standard | OEM-grade, meets SINOTRUK factory specifications (Q/SINOTRUK 003-2021) |
Overview – AZ400741710888 Front Hub Flange Assembly
The AZ400741710888 Front Hub Flange Assembly (New Version) is a complete wheel-end component designed for the front axle of SINOTRUK Sitrak heavy-duty trucks. This assembly integrates the hub flange and wheel studs into a single, precision-manufactured unit, simplifying installation and ensuring optimal wheel mounting accuracy. The new version features improved metallurgy and enhanced stud retention for greater reliability under high torque and heavy loads.
Manufactured from high-strength forged steel or ductile iron, this hub flange offers exceptional resistance to fatigue, impact, and corrosion. The assembly is precisely machined to ensure perfect concentricity with the wheel hub and axle spindle, minimizing runout and vibration for a smoother ride and extended tire life. The AZ400741710888 hub flange is a direct OEM replacement for original Sitrak and HOWO front axle components, ensuring seamless integration and restoring factory-spec wheel alignment and bearing preload.
A robust hub flange assembly is critical for safe and reliable vehicle operation; any wear or damage can lead to wheel misalignment, uneven tire wear, and potentially dangerous wheel separation. The AZ400741710888 assembly eliminates these risks, delivering the strength, precision, and durability required for the most demanding commercial vehicle applications.
The AZ400741710888 assembly comes pre-fitted with ten M22 × 1.5 high-tensile wheel studs, eliminating the need for separate stud installation. These studs are induction-hardened and zinc-plated for superior corrosion resistance and clamp load retention, ensuring reliable wheel attachment over hundreds of thousands of kilometers.
The AZ400741710888 hub flange is precision-machined to exacting tolerances, with a pilot diameter of 110 mm and a PCD of 335 mm, ensuring perfect concentricity with the wheel hub and axle spindle. This precision reduces runout, minimizes vibration, and extends wheel bearing life.
Constructed from high-strength forged steel or ductile iron, the AZ400741710888 assembly is built to withstand the extreme loads and fatigue cycles experienced by heavy-duty trucks. The new version incorporates improved material composition and heat treatment for increased strength and impact resistance.
Designed as a complete assembly with pre-installed studs, the AZ400741710888 hub flange simplifies installation and reduces assembly time. No additional pressing or stud fitting is required, making it an ideal choice for fleet maintenance and workshop repairs.
Performance Benefits of AZ400741710888 Front Hub Flange Assembly
Superior Wheel Stability: The AZ400741710888 assembly ensures precise wheel mounting, reducing lateral runout and improving vehicle stability at highway speeds. This translates to enhanced driver comfort and reduced tire wear.
Increased Load Capacity: The high-strength materials and robust design of the AZ400741710888 hub flange allow it to handle the high static and dynamic loads typical of heavy-duty truck front axles, ensuring reliable performance even under maximum payload conditions.
Reduced Maintenance: The pre-fitted studs and precision machined surfaces of the AZ400741710888 assembly minimize the risk of stud loosening and flange distortion, reducing the frequency of wheel-end inspections and adjustments.
Corrosion Resistance: The AZ400741710888 flange is treated with a protective coating and the studs are zinc-plated, offering excellent resistance to rust and corrosion, even in harsh winter road conditions or high-humidity environments.
Extended Bearing Life: By maintaining precise alignment and reducing vibration, the AZ400741710888 assembly helps extend the service life of the front wheel bearings, reducing downtime and replacement costs.
OEM Interchangeability: The AZ400741710888 assembly is a direct cross-reference for multiple OEM part numbers, ensuring seamless replacement and compatibility with a wide range of SINOTRUK heavy trucks.
Compatibility & Installation – AZ400741710888 Front Hub Flange
Compatible Models:
- Sitrak C7H (all axle variants)
- Sitrak C5H
- HOWO T7H (6×4, 8×4)
- HOWO A7
- HOWO T5G
- Other SINOTRUK models with compatible front hub flange
The AZ400741710888 hub flange is a direct cross-reference for multiple OEM part numbers, ensuring broad applicability across the SINOTRUK truck range. Always verify compatibility using your vehicle’s VIN or the existing hub flange part number.
Installation Tips & Best Practices:
- Clean the axle spindle and hub bore thoroughly before installation.
- Apply a thin coat of anti-seize compound to the spindle and pilot diameter.
- Carefully slide the AZ400741710888 assembly onto the spindle, ensuring it is fully seated.
- Install the wheel hub and torque the retaining nut to the manufacturer’s specifications.
- Mount the wheel and tighten the wheel nuts in a star pattern to the recommended torque.
- After installation, check wheel bearing preload and adjust if necessary.
- Re-torque wheel nuts after the first 50-100 km of operation.
Advanced Materials & Manufacturing – AZ400741710888
The AZ400741710888 Front Hub Flange Assembly is produced using state-of-the-art forging and machining processes to ensure the highest levels of precision and durability. The flange body is manufactured from high-strength ductile iron or forged steel, with a tensile strength exceeding 450 MPa. The material composition is carefully controlled to provide an optimal balance of strength, toughness, and fatigue resistance.
Each AZ400741710888 assembly undergoes rigorous quality testing, including dimensional verification, hardness testing, and non-destructive crack detection. The wheel studs are manufactured from high-tensile alloy steel (grade 10.9) and are induction-hardened to ensure consistent clamp load retention. The entire assembly is coated with a corrosion-resistant finish to protect against rust and environmental damage.
The new version of the AZ400741710888 hub flange incorporates improved stud retention features and enhanced material properties, resulting in increased fatigue life and improved resistance to stress corrosion cracking. This makes it the preferred choice for fleet operators and maintenance professionals seeking long-term reliability and safety.
Why Choose the AZ400741710888 Front Hub Flange Assembly?
The AZ400741710888 Front Hub Flange Assembly (New Version) from SINOTRUK Sitrak is the definitive choice for fleet operators and owner-drivers who demand uncompromising wheel-end reliability, safety, and performance. As a genuine OEM-grade component, it guarantees a perfect fit, precise stud alignment, and extended service life—backed by SINOTRUK’s engineering excellence and decades of experience in heavy commercial vehicle manufacturing.
Whether you are replacing a worn hub flange on a high-mileage fleet truck or performing routine maintenance on a single vehicle, the AZ400741710888 assembly delivers the strength, precision, and durability you need to keep your Sitrak truck operating safely and efficiently. Its proven design, premium materials, and exacting tolerances make it the smart choice for any front axle repair or preventive maintenance program.
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