OEM WG9003321118
Experience the robust performance of the WG9003321118 Cylindrical Roller, a precision bearing component engineered for SINOTRUK Howo trucks. This genuine part is an integral part of our premium Sinotruk howo parts portfolio, manufactured from high‑grade bearing steel to withstand extreme radial loads and continuous heavy‑duty operation. The WG9003321118 roller ensures smooth rotation and extended life of transmission and axle bearings.
| Parameter | Specification |
|---|---|
| OEM Number | WG9003321118 |
| Product Name | Cylindrical Roller |
| Brand / Series | SINOTRUK Howo genuine |
| Material | GCr15 bearing steel (AISI 52100) |
| Hardness | 60‑64 HRC |
| Dimensions (Dia. × Length) | 11 mm × 11 mm |
| Tolerance Class | Grade III (ISO 492) |
| Surface Roughness | Ra ≤ 0.1 µm |
| Heat Treatment | Through‑hardened & tempered |
| Compatible Models | Howo A7, T7H, ZZ4257, ZZ1257 |
Line contact design provides maximum load‑carrying capability, ideal for heavy‑duty transmission and axle applications.
Each roller is centerless ground to tight dimensional tolerances, ensuring uniform load distribution and quiet operation.
Through‑hardened GCr15 steel with optimized microstructure guarantees long fatigue life under cyclic stresses.
Every roller undergoes eddy current testing and dimensional verification to ensure zero defects.
This cylindrical roller is a direct replacement for the following SINOTRUK Howo components and vehicle series:
The WG9003321118 cylindrical roller is manufactured from premium GCr15 bearing steel, which is then precision cold‑headed and centerless ground to achieve the optimal balance of hardness and dimensional accuracy. The rollers undergo a controlled heat treatment process consisting of austenitizing, oil quenching, and tempering to reach a uniform hardness of 60‑64 HRC. After heat treatment, each roller is tumbled to remove sharp edges and then superfinished to a surface roughness of Ra ≤ 0.1 µm. This meticulous process ensures that this critical rolling element meets or exceeds the original equipment specifications.
In heavy‑duty transmissions and axles, cylindrical rollers are subjected to immense radial loads and high rotational speeds. They must maintain precise geometry to prevent skidding and premature fatigue. This roller is designed to handle the extreme forces generated in Howo drivetrains, which can exceed 5,000 N per roller in peak torque conditions. Its optimized crown profile ensures even stress distribution, preventing edge loading and extending bearing life. Fleet operators who have switched to this genuine part report fewer transmission failures and extended service intervals, directly impacting their bottom line.
Installation of the WG9003321118 rollers should be performed by a qualified technician using proper tools. The rollers must be installed in a clean environment, free of contaminants. It is essential to use the correct cage and raceway components. Always replace all rollers in a bearing set simultaneously to maintain uniform clearance. Using genuine parts ensures that the rollers fit perfectly and provide the designed load capacity. After installation, verify smooth rotation and correct end play.
The quality control for this roller includes 100% inspection of critical dimensions using laser micrometers and optical comparators. Every roller is also tested for hardness and surface defects. Samples from each production batch undergo fatigue life testing under simulated operating conditions. These rigorous checks guarantee that the WG9003321118 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 roller. 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 roller 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 transmission rebuilders and fleet maintenance departments, the WG9003321118 roller is available individually or as part of a complete bearing kit. Each roller is packaged in a sealed anti‑rust paper and foam‑lined box to protect it during shipping. A data sheet with the actual measured dimensions is included with each batch, 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 roller has a mean time between failures (MTBF) exceeding 800,000 kilometers when properly maintained. This exceptional reliability is the result of superior material selection and precise manufacturing. Many fleet managers have standardized on this genuine part for all their transmission and axle overhauls, reducing parts inventory complexity and ensuring consistent quality.
When ordering, please verify your vehicle’s bearing specifications to ensure correct fitment. The WG9003321118 roller is specifically designed for 11 mm diameter applications. For other sizes, 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 WG9003321118 cylindrical roller represents the highest standard of quality and engineering for SINOTRUK Howo trucks. Its bearing steel construction, precision ground geometry, and robust heat treatment ensure smooth, reliable rotation and extended transmission and axle life. By choosing this genuine component, you protect your investment and keep your fleet on the road. Trust the WG9003321118 – the roller that heavy‑duty demands.
During bearing service, visually inspect the WG9003321118 rollers for pitting, spalling, or discoloration. Measure roller diameter and compare to specifications.
Use only the recommended gear oil or grease. Maintain proper lubrication intervals to prevent metal‑to‑metal contact.
Only the authentic WG9003321118 roller carries SINOTRUK’s material certification. Imitations often use low‑grade steel that wears quickly or fractures, leading to bearing failure. The genuine part is traceable to an ISO 9001 facility, with 100% inspection. When you install this roller, you preserve the resale value of your Howo and avoid roadside failures. Fleet operators report that using the OEM component cuts unscheduled transmission and axle repairs by 60%.
Preparation: Clean the bearing raceways and cage. Ensure no burrs or debris are present. Apply a light coat of assembly oil.
Installation: Insert rollers into the cage or raceway using non‑metallic tools. Ensure they are evenly spaced and not tilted.
After assembly, check radial clearance and rotate to confirm smooth operation. Always replace the WG9003321118 if any damage is observed during disassembly.
Optimized microstructure and surface finish provide exceptional rolling contact fatigue resistance, exceeding ISO 281 life calculations.
The steel maintains its hardness up to 150°C, ensuring reliable performance in high‑temperature environments.
The steel used contains over 90% recycled content. Production scrap is recycled into new steel, minimizing environmental footprint.
At end of life, the roller is 100% recyclable, supporting circular economy principles and reducing landfill waste.
Every WG9003321118 roller leaves the factory with a lot number for full traceability. When you order from our official warehouse, you receive the latest production batch with optimized geometry – a detail many suppliers ignore. Pair the roller with genuine SINOTRUK Howo cages and raceways for a 100% match.
To verify the authenticity of your WG9003321118, check the laser‑etched part number on the packaging. Our global network ensures fast delivery to any heavy‑duty workshop. Trust this roller to keep your Howo drivetrain running smoothly – it’s the small component that makes a monumental difference.
WG9003321118 – 100% Genuine SINOTRUK Howo Cylindrical Roller • Built for the long haul • No forms, just quality parts.
