- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
The quill bearing is a precision cylindrical sleeve designed to provide low‑friction support for rotating shafts in heavy‑duty driveline applications. The genuine SINOTRUK HOWO LG9704220002+073/1 Quill Bearing is an OEM‑grade component engineered to exacting tolerances for reliable shaft alignment and extended service life. As a critical element of the trusted Sinotruk howo parts family, this bearing guarantees perfect fitment, superior radial support, and long‑term durability. Manufactured from high‑strength bronze alloy with precision‑machined inner and outer surfaces, the LG9704220002+073/1 unit withstands the extreme forces and continuous operation of mining, construction, and long‑haul applications. Investing in this authentic component ensures smooth rotation, reduces vibration, and extends the life of your transmission and differential assemblies.
Quill Bearing
Втулка подшипника
Cojinete de tubo
The LG9704220002+073/1 quill bearing is manufactured from a high‑strength aluminum‑bronze alloy (CuAl10Fe5Ni5), providing exceptional wear resistance and excellent conformability. Its precision‑machined cylindrical bore and outer diameter ensure accurate shaft alignment and consistent running clearances. Unlike rolling element bearings, the quill bearing operates on a thin film of lubricant, offering silent operation and the ability to dampen vibrations. This design results in smooth, reliable performance even under high radial loads and misalignment conditions common in heavy‑duty truck chassis.
The bearing is designed for applications where compact radial support is required, such as transmission idler gears, differential pinion shafts, and auxiliary drive housings. Its simple cylindrical shape allows for easy installation and replacement. The LG9704220002+073/1 quill bearing is manufactured to ISO 3547 standard, guaranteeing interchangeability and consistent performance. Every bearing undergoes rigorous quality control, including dimensional checks, hardness testing, and microscopic surface inspection to ensure it meets SINOTRUK HOWO’s exacting specifications.
The table below provides detailed technical specifications for the genuine SINOTRUK HOWO LG9704220002+073/1 Quill Bearing. This data is essential for verifying compatibility and understanding the component’s capabilities.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | LG9704220002+073/1 | SINOTRUK HOWO Original Code |
| Product Name | Quill Bearing | Cylindrical sleeve bearing |
| Inner Diameter (d) | Model‑specific (e.g., 65 mm) | Fits shaft |
| Outer Diameter (D) | Model‑specific (e.g., 75 mm) | Fits housing bore |
| Length (L) | Model‑specific (e.g., 50 mm) | Overall length |
| Material | Aluminum‑bronze alloy (CuAl10Fe5Ni5) | High strength, corrosion resistant |
| Hardness (HB) | 180 – 220 HB | Optimal wear resistance |
| Max Dynamic Load (radial) | 75 MPa (projected area) | Depends on application |
| Max Sliding Speed | 2.5 m/s | With adequate lubrication |
| Operating Temperature | -40°C to +150°C | Suitable for all climates |
| Lubrication | Oil or grease (grooves optional) | Ensure continuous film |
| Weight (approx.) | 0.5 kg | Depending on dimensions |
| Compatible Applications | SINOTRUK HOWO transmissions, differentials, auxiliary drives | Verify model |
Proper installation is critical for quill bearing longevity. The shaft and housing must be inspected for damage and correct dimensions. The new LG9704220002+073/1 quill bearing should be pressed into the housing using a suitable arbor press, ensuring square entry to prevent galling. The inner surface should be coated with assembly lubricant before sliding the shaft into place. Never hammer directly on the bearing, as this can distort the precision bore. For press fits, cooling the bearing or heating the housing may ease installation. Ensure that lubrication passages are aligned with any grooves in the bearing.
The LG9704220002+073/1 quill bearing is a direct OEM replacement for specific SINOTRUK HOWO transmission and differential applications. Compatibility must be verified by matching the part number with your vehicle’s service manual. Using the correct bearing ensures proper internal clearance and load capacity. Always replace the bearing if it shows any signs of wear or damage during disassembly. Genuine SINOTRUK HOWO parts guarantee a perfect fit and reliable performance under the most demanding conditions.
When installing a quill bearing, use a bearing installation tool that applies pressure evenly to the outer rim. If the bearing has an oil groove, ensure it aligns with the lubrication supply hole. After assembly, check the shaft for free rotation and absence of binding.
The full‑contact fluid film of the LG9704220002+073/1 quill bearing eliminates rolling element noise, providing whisper‑quiet drivetrain operation and reducing overall cabin noise levels.
The aluminum‑bronze alloy provides excellent anti‑scuffing properties and resistance to abrasive wear, ensuring long service life even under marginal lubrication conditions.
Using a genuine OEM quill bearing prevents premature failure and unscheduled repairs, keeping your SINOTRUK HOWO on the road and reducing total operating costs.
A worn quill bearing may cause increased shaft play, vibration, oil leakage, and abnormal noise (knocking or squealing). Scoring or galling on the shaft surface is a clear indicator of bearing failure. During routine maintenance, check for radial clearance and inspect the bearing surface through lubrication ports if possible. If any of these symptoms are present, immediate replacement with a genuine LG9704220002+073/1 quill bearing is essential to prevent further damage to gears and shafts.
Ignoring bearing wear can lead to catastrophic transmission failure, including gear tooth breakage and shaft seizure. Replacing it promptly with a genuine LG9704220002+073/1 restores proper operation and ensures the safety and reliability of your SINOTRUK HOWO truck.
To maximize the life of your LG9704220002+073/1 quill bearing, ensure proper lubrication with the recommended oil or grease at correct intervals. Keep seals in good condition to prevent contamination. Avoid overloading the vehicle beyond its rated capacity. During transmission service, inspect bearings for any signs of wear or discoloration. If noise or play develops, investigate immediately.
Always use genuine SINOTRUK HOWO replacement parts for bearing assemblies. Following these practices will help your drivetrain run smoothly for hundreds of thousands of kilometers.
Generic aftermarket quill bearings often use inferior bronze alloys, incorrect hardness, or poor surface finish, leading to premature wear and potential damage to expensive transmission components. The genuine SINOTRUK HOWO LG9704220002+073/1 quill bearing is engineered to the exact specifications of your truck’s drivetrain, ensuring correct fit, load capacity, and durability. It is manufactured under strict quality controls to withstand the extreme demands of heavy‑duty diesel operation.
By choosing the authentic part, you protect your investment and ensure reliable performance for years to come. For fleet managers and owner‑operators who demand the best, the genuine LG9704220002+073/1 is the only responsible choice.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
A PROFESSIONAL CHINA TRUCK AND SPARE PARTS SUPPLIER
@Copyright DERUNA
