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HOWO TRUCK Wheel-End Reducer Assembly AZ9231340329 FROM SINOTRUK COMPANY
FUNCTION
1. Power Transmission: Acting as the central hub for power transmission, the planetary carrier receives rotational motion from the main reducer and, through the complex kinematics of the planetary gear train, ultimately transmits this power to the wheels, thereby driving the vehicle forward or backward. This design enables the transmission of immense torque within a compact space; furthermore, because the planetary gear train distributes the load across multiple planetary gears, the transmission process is smoother and offers a higher load-bearing capacity.
2. Support & Positioning: The planetary carrier (AZ9231340329) serves as the structural backbone of the wheel-side reducer. Through precisely machined spline bores and pinholes, it ensures accurate positioning of the components. During vehicle operation-whether under vertical loads, cornering centrifugal forces, or acceleration/braking-all forces acting on the wheels are ultimately transmitted through the wheel hub to this assembly. Consequently, the planetary carrier must possess exceptional strength and rigidity to prevent deformation or fracture.
3. Durability in Harsh Conditions: Trucks frequently traverse rugged, uneven terrain, and heavy-load starts can generate massive, instantaneous impact forces. This component is manufactured using high-strength alloy steel and ductile iron, materials capable of effectively absorbing and dissipating this impact energy, thereby safeguarding the gears of the main reducer from damage.
4. Fault Protection & Failure Modes: In instances of extreme overloading or mechanical seizure, if the planetary carrier's structural integrity is compromised, it is designed to be the primary component to deform or fracture. This controlled failure severs the power transmission path, thereby preventing catastrophic damage to more expensive components such as the axle shafts, main reducer, or engine.
Working Principle
After the power output from the engine passes through the transmission and driveshaft to reach the drive axle's final drive, the rotational speed remains high while the torque is insufficient to directly drive heavy-duty wheels. Upon entering the wheel-side reducer, the power undergoes a second stage of speed reduction via a planetary gear train (comprising a sun gear, planetary gears, and a ring gear).
Installation Location
The components belonging to the driving axle assembly are mounted on the left and right sides of the rear axle (i.e., at the left and right rear wheels).
Performance Advantages
| Performance Dimension | Core Advantage | Technical Principle & Effect |
|---|---|---|
| Load Capacity | Super Heavy-Duty Load | 3-Planet Gear Load Sharing: Distributes torque evenly, minimizing stress on individual gears. Load capacity is 30%+ higher than traditional structures, specifically designed for heavy/overloaded operations. |
| Transmission Efficiency | High Efficiency & Energy Saving | Rolling Friction: Efficiency >98%, minimal heat generation. Reduces fuel consumption and slows down oil oxidation, extending oil change intervals. |
| Structural Space | Compact & Lightweight | Co-axial Design: Input and output share the same central axis. Smaller size and reduced weight lower unsprung mass, improving handling and saving installation space. |
| Operational Smoothness | Low Noise & Quiet | Radial Force Balance: Multiple teeth mesh simultaneously, canceling out forces. Results in minimal vibration and noise, significantly extending bearing life. |
| Reliability | High Impact Resistance | Redundancy & Durability: Strong resistance to impact with fault tolerance (vehicle can move short distances even if one planet gear fails). Easy maintenance and high parts interchangeability. |
| Overall Value | Small Size, High Power | Engineered specifically for heavy-duty trucks, achieving the optimal balance of compact size, high torque, and maximum reliability. |
DETAILS
| DESCRIPTION | Wheel-End Reducer Assembly | PART NUMBER | AZ9231340329 |
| WEIGHT |
30KG |
VOLUME | 255 × 255 × 125 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Daily Maintenance Recommendations
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