Needle Roller Bearing 190003326236， 30312 Sinotruk
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| Product Name | Needle Roller Bearing |
| Product Number | 190003326236， 30312 |
| MOQ | 1 |
| Warranty period | 3 Months |
| Package | Carton |
| Application | Sinotruk |
| Original | China |
Shipping and Delivery
We offer spare parts for most Chinese truck brands and provide comprehensive, turnkey procurement services. For more information on specific vehicle models or parts, please contact us.Transactions are processed through the receiving bank (VTB).
Product Description
Product Introduction
The 30312 tapered roller bearing (part number 190003326236) is a high-precision rolling element bearing manufactured from premium high-carbon chromium bearing steel, adhering to strict OE standards for Sinotruk HOWO applications. Unlike standard needle bearings, this unit features a tapered structural design consisting of a precision-ground inner ring (cone), outer ring (cup), tapered rollers, and a cage assembly—optimized to withstand combined radial and axial loads, a critical requirement for heavy-duty truck drivetrain components. The bearing undergoes a full-process heat treatment, including quenching and tempering, to achieve a hardened raceway surface (HRC 60-64) and excellent core toughness, preventing brittle fracture under impact loads. Its precision-machined roller and raceway contact surfaces ensure minimal rolling friction, while the anti-separation cage design maintains roller alignment even during high-speed rotation. This bearing is dimensionally calibrated to the 30312 standard, with strict control over clearance and runout tolerances, ensuring seamless integration with HOWO’s axle and differential components.
Core Function
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Withstands combined radial loads (from vehicle weight) and unidirectional axial loads (from acceleration, braking, and cornering) in heavy-duty truck drivetrain systems.
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Reduces rotational friction between moving components (e.g., differential shafts, wheel hub spindles) to optimize power transmission efficiency and minimize energy loss.
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Maintains precise positional alignment of rotating parts within the axle/differential assembly, preventing abnormal vibration and premature wear of mating components.
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Resists impact, fatigue, and wear under extreme operating conditions (e.g., full-load transportation, uneven road surfaces) to extend the service life of the entire drivetrain.
Business Description
We offer spare parts for all Chinese brand trucks, construction machinery. At the same time, OEM service and whole process spare parts export service increasingly become a characteristic of our company.
Transactions can be processed through various payment methods. If you need more information about a specific model or part, please contact us.
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