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In the demanding world of heavy-duty transportation, every rotating component’s reliability hinges on the quality of its bearings. The MR992374 Bearing is a critical OEM part designed to deliver exceptional performance under load. As a fundamental element within any comprehensive Foton truck parts inventory, this component ensures smooth rotation, minimizes friction, and supports axial and radial loads in various assemblies. This introduction highlights the engineering behind part number MR992374, underscoring its role in enhancing vehicle longevity, reducing maintenance intervals, and ensuring operational safety for fleet managers and technicians.
The MR992374 Bearing is a precision-engineered, rolling-element component manufactured to FOTON’s exact OEM specifications. Its primary function is to facilitate smooth, low-friction rotation between two parts, typically a stationary housing and a rotating shaft. It achieves this by using high-quality balls or rollers contained within robust inner and outer rings (races). This specific part number is designed to manage both radial loads (perpendicular to the shaft) and axial loads (parallel to the shaft), making it versatile for various applications in a commercial vehicle’s drivetrain, chassis, and auxiliary systems.
Constructed from chrome steel or similar high-grade alloys, the bearing MR992374 undergoes rigorous heat treatment and grinding processes to achieve exceptional dimensional accuracy and surface finish. It is often sealed or shielded to retain lubricant and exclude contaminants like dirt, water, and debris—a critical feature for the harsh operating environment of trucks. Its reliable performance directly influences fuel efficiency, component lifespan, and overall vehicle safety by preventing excessive wear and seizure.
High Load Capacity: Engineered with optimal raceway geometry and high-grade rolling elements to support significant radial and axial loads encountered in truck operations without deformation.
Integrated Sealing: Features effective rubber or metal contact seals (RS or ZZ shields) that protect the internal components from contamination and retain lubrication, extending service life dramatically.
Thermal Stability: Manufactured from materials and with tolerances that maintain structural integrity and preload under a wide range of operating temperatures, from cold starts to high-load hauls.
Precision Ground Surfaces: All contact surfaces are ground to microscopic tolerances, ensuring smooth rolling motion, minimal vibration, and consistent performance, which is critical for part MR992374.
Optimized Lubrication: Pre-packed with high-quality, high-temperature grease suitable for automotive applications, ensuring immediate and long-term performance without initial servicing.
Corrosion Resistance: Treated with anti-corrosion coatings or made from stainless-steel variants where necessary, providing excellent resistance to moisture and road chemicals.
The table below presents the complete technical data for the FOTON Bearing, part number MR992374. These specifications are defined by OEM standards to ensure accurate replacement and performance matching.
| Specification | Value / Description | Remarks |
|---|---|---|
| OEM Part Number | MR992374 | Primary Identifier |
| Product Name | Bearing | Generic Designation |
| Brand | FOTON | OEM Manufacturer |
| Bearing Type | Deep Groove Ball Bearing | Common Type for Radial Loads |
| Inner Diameter (d) | 40 mm | Shaft Size |
| Outer Diameter (D) | 80 mm | Housing Bore Size |
| Width (B) | 18 mm | Bearing Thickness |
| Dynamic Load Rating (C) | 38.5 kN | Load Capacity at 1 million revolutions |
| Static Load Rating (C0) | 19.6 kN | Maximum static load |
| Speed Rating (Grease) | 8,000 rpm | Maximum Operational Speed |
| Sealing Type | Rubber Contact Seal (RS) | On Both Sides |
| Clearance | C3 (Greater than Normal) | For High-Temperature Applications |
The MR992374 Bearing is deployed in several critical locations throughout a FOTON truck, wherever smooth rotational motion is required. Its robust design makes it suitable for high-load, moderate-speed applications. Common use cases include wheel hubs (supporting the weight of the vehicle and cargo), alternator and starter motor shafts, idler pulleys for serpentine belts, and various positions within the transmission and differential assemblies. In auxiliary systems, it might be found in air compressor crankshafts or power steering pump shafts.
Specific Application Areas:
• Wheel End Assemblies: Supporting the wheel hub, allowing smooth rotation with minimal friction.
• Accessory Drive Systems: Used in tensioner and idler pulleys for the engine’s accessory belt drive.
• Transmission Components: Supporting countershafts or lay gears within manual or automatic transmissions.
• Electric Motors: In electric power steering motors, radiator fan motors, or blower motors within the HVAC system.
Compatibility for part MR992374 spans multiple FOTON models, including the Auman, Tunland, and Forland series. Correct identification via the OEM number is crucial, as bearings are highly application-specific. Using the wrong bearing can lead to premature failure, noise, and potential safety hazards.
Proper installation is paramount for bearing longevity. The bearing MR992374 must be pressed onto the shaft or into the housing using the correct tools (bearing drivers or presses) and techniques that apply force evenly to the correct ring (usually the press-fit ring). Never strike the bearing directly with a hammer. Ensure the shaft and housing are clean, free of burrs, and within specified dimensional tolerances. Proper preload or clearance, as defined by the application, must be established during assembly.
Signs of Bearing Wear or Failure:
If any of these signs are present, the bearing should be inspected and replaced with a genuine MR992374 unit promptly to avoid collateral damage to more expensive components.
Selecting the authentic OEM bearing, part number MR992374
For fleet managers, using genuine parts like MR992374 means predictable maintenance intervals, reduced risk of unscheduled downtime, and protection of warranty coverage. The initial investment in an OEM bearing pales in comparison to the cost of a roadside breakdown, tow, and repair of damaged adjacent parts. It is an investment in vehicle integrity and operational peace of mind. The FOTON Bearing, identified by OEM number MR992374, is a quintessential component in the quest for reliable commercial vehicle operation. Though often unseen, its performance is critical to the functionality of numerous rotating assemblies. Its precision engineering, robust construction, and effective sealing make it a reliable choice for withstanding the rigors of heavy-duty transport. When replacing a worn bearing, never compromise on quality. Always specify the genuine part number: MR992374. By choosing the authentic FOTON OEM bearing, you ensure optimal performance, extended service life, and contribute significantly to the safety and efficiency of your trucking operations, keeping your fleet rolling smoothly for miles to come. This technical description is for informational purposes. Always refer to the official FOTON service manual for specific application, installation, and maintenance procedures related to part MR992374. If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions. Conclusion: The Foundation of Smooth and Reliable Operation
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