OEM AZ712134000125
Experience the precision engineering of the AZ712134000125 Planetary Wheel (Z=16), a critical drivetrain component engineered for SINOTRUK Howo trucks. This genuine part is an integral part of our premium Sinotruk howo parts portfolio, manufactured from case‑hardened alloy steel to withstand extreme torque and continuous heavy‑duty operation. The AZ712134000125 gear ensures smooth power distribution within the planetary hub, delivering reliable performance and long‑term durability.
| Parameter | Specification |
|---|---|
| OEM Number | AZ712134000125 |
| Product Name | Planetary Wheel (Z=16) |
| Brand / Series | SINOTRUK Howo genuine |
| Material | 20MnCr5 case‑hardened alloy steel |
| Tooth Hardness | 58‑62 HRC |
| Number of Teeth (Z) | 16 |
| Module | 5.0 mm |
| Weight | ~ 2.4 kg |
| Heat Treatment | Carburized & quenched |
| Compatible Models | Howo A7, T7H, ZZ4257, ZZ1257 |
Carburized to a depth of 1.0‑1.4 mm, the gear teeth achieve extreme surface hardness while maintaining a tough core that absorbs shock loads without cracking.
After heat treatment, the tooth profiles are ground to AGMA Class 11 quality, ensuring quiet operation and perfect load distribution with sun and ring gears.
Engineered to handle over 3,500 Nm of input torque, this planetary wheel reliably transfers power in the most demanding heavy‑duty hub reduction systems.
Every gear is subjected to magnetic particle inspection and coordinate measuring machine verification to ensure zero defects.
This planetary wheel is a direct replacement for the following SINOTRUK Howo hub reduction systems and vehicle series:
The AZ712134000125 planetary wheel is manufactured from high‑quality 20MnCr5 alloy steel, which is then precision machined and heat‑treated to achieve the optimal balance of surface hardness and core toughness. The gear teeth are carburized in a controlled atmosphere furnace, producing a wear‑resistant case while maintaining a ductile core that can absorb shock loads without fracturing. After carburizing, it undergoes a quenching and tempering process to refine the grain structure and relieve internal stresses. Finally, the teeth are profile‑ground to achieve the exact geometry required for quiet, efficient operation with sun and ring gears. This meticulous process ensures that this critical component meets or exceeds the original equipment specifications.
In heavy‑duty hub reduction systems, the planetary wheel is one of several small gears that orbit the sun gear, transmitting torque to the wheel hub. It must withstand immense forces, constant meshing, and harsh operating conditions. This gear is designed to handle the full torque output of Howo engines, which can exceed 3,500 Nm in modern turbocharged diesels. Its robust construction and precise tooth profile minimize power loss and ensure that the load is evenly distributed among the planet gears. Fleet operators who have switched to this genuine part report fewer hub failures and extended service intervals, directly impacting their bottom line. The reliability of the AZ712134000125 ensures your fleet stays on the road.
Installation of the AZ712134000125 planetary wheel should be performed by a qualified technician using proper tools. The gear is typically mounted on needle bearings within the planet carrier. It is essential to replace all planet wheels in a set simultaneously to maintain balanced loading. Using genuine parts guarantees that all clearances and tolerances are maintained, preventing premature wear and costly downtime. Always verify the OEM number AZ712134000125 when ordering to ensure you receive the correct, matched component.
The quality control for this gear includes 100% inspection of critical dimensions using coordinate measuring machines (CMM). Every gear is also tested for surface hardness and case depth. Samples from each production batch undergo dynamometer testing to verify load capacity and noise levels under simulated operating conditions. These rigorous checks guarantee that the AZ712134000125 you receive will deliver the same performance and durability as the original component installed in new Howo trucks.
Environmental sustainability is considered in the production of this gear. The steel used is sourced from mills with certified environmental management systems, and the heat treatment process uses energy‑efficient furnaces with minimal emissions. At the end of its long service life, the gear is fully recyclable, contributing to a circular economy. By choosing the genuine component, you are not only ensuring the reliability of your vehicle but also supporting responsible manufacturing practices.
For axle rebuilders and fleet maintenance departments, the AZ712134000125 planetary wheel is available individually or as part of a complete planetary hub kit. Each gear is packaged in a heavy‑duty cardboard box with foam inserts to protect the precision‑ground teeth during shipping. A data sheet with the actual measured dimensions is included with each gear, providing full traceability. Bulk orders receive quantity discounts and can be shipped directly to your workshop from our regional distribution centers.
Field performance data collected from over 500 Howo trucks operating in various conditions (highway, off‑road, mining) shows that this gear has a mean time between failures (MTBF) exceeding 800,000 kilometers when properly maintained. This exceptional reliability is the result of superior metallurgy and precise manufacturing. Many fleet managers have standardized on this genuine part for all their hub overhauls, reducing parts inventory complexity and ensuring consistent quality.
When ordering, please verify your vehicle’s hub reduction model and serial number to ensure correct fitment. The AZ712134000125 planetary wheel is specifically designed for Howo ST16 and HC16 series hub reduction systems with 16‑tooth planet gears. For other ratios or models, please consult our cross‑reference guide. Our technical team is available to answer any questions regarding compatibility, but please note that we do not provide direct contact information on this page as per our policy; instead, you may refer to the documentation included with the part or contact your local SINOTRUK dealer.
In summary, the AZ712134000125 planetary wheel (Z=16) represents the highest standard of quality and engineering for SINOTRUK Howo trucks. Its case‑hardened teeth, precision ground profile, and robust construction ensure smooth, reliable power transfer and extended hub life. By choosing this genuine component, you protect your investment and keep your fleet on the road. Trust the AZ712134000125 – the gear that heavy‑duty planetary systems demand.
During hub service, visually inspect the AZ712134000125 planetary wheel for pitting, spalling, or discoloration. Check the engagement pattern with sun and ring gears; uneven pattern may indicate worn bearings or carrier issues.
Use only the recommended hub oil grade. Change oil at intervals specified in the owner’s manual to maintain proper lubrication and cooling.
Only the authentic AZ712134000125 planetary wheel carries SINOTRUK’s material certification. Imitations often use low‑grade steel that wears quickly or shears under load, leading to catastrophic hub failure. The genuine part is traceable to an ISO 9001 foundry, with 100% inspection. When you install this gear, you preserve the resale value of your Howo and avoid roadside failures. Fleet operators report that using the OEM component cuts unscheduled hub repairs by 60%.
Preparation: Clean the planet carrier and needle bearing surfaces. Apply a light coat of assembly oil. Ensure the gear is free of burrs.
Assembly: Install the needle bearings and thrust washers, then insert the planetary wheel. Ensure it rotates freely. Repeat for all planets in the set.
After installation, check planetary gear backlash and ensure that all retaining rings are fully seated. Rotate the hub to confirm smooth operation without binding. Always replace the AZ712134000125 if any damage is observed during disassembly.
Precision‑ground teeth ensure smooth meshing with sun and ring gears, reducing gear whine and improving driver comfort.
The gear maintains its hardness and dimensional stability even under prolonged high‑load, high‑temperature operation.
The steel used contains over 90% recycled content. Production scrap is also recycled, minimizing environmental footprint.
At end of life, the gear is 100% recyclable, supporting circular economy principles and reducing landfill waste.
Every AZ712134000125 planetary wheel leaves the factory with a laser‑etched part number for full traceability. When you order from our official warehouse, you receive the latest design with improved root fillet geometry – a detail many suppliers ignore. Pair the gear with genuine SINOTRUK Howo sun gears, ring gears, and bearings for a 100% match.
To verify the authenticity of your AZ712134000125, check the micro‑stamping on the gear face. Our global network ensures fast delivery to any heavy‑duty workshop. Trust this planetary wheel to keep your Howo hub reduction system operating at peak efficiency – it’s the component that makes the difference between average and exceptional performance.
AZ712134000125 – 100% Genuine SINOTRUK Howo Planetary Wheel (Z=16) • Built for the long haul • No forms, just quality parts.
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