Product introduction
The Cummins 4948505F bearing is specifically designed to withstand axial forces and stabilize shaft axial movement, ensuring smooth operation for X15 platform engines. The 5.9 Cummins pilot bearing is precisely matched to the 5.9L series engines, efficiently facilitating smooth power transmission. All bearings in the series have passed rigorous OE standard compatibility testing, demonstrating excellent performance in material selection, precision control, and durability. They provide robust core support for the continuous and stable operation of Cummins engines across different power platforms, making them a high-quality component choice that combines reliability and professionalism.
Product Images
Product Parameters
| Parameter category | Detailed Description |
| Part number | 4948505F |
| Applicable engine series | Cummins ISF3.8, B5.9, 6BTA, ISB, QSB |
| Bearing type | Main thrust pilot carrier bearing (axial thrust bearing) |
| Material composition | The aluminum alloy base is covered with a highly wear-resistant and anti-friction alloy layer on the surface |
| Structural features | Single-chip design, integrated pilot guiding structure, optimizes oil film distribution and heat conduction performance |
| Operating temperature range | 40°c or +150°c |
Product Advantages
Cummins carrier bearings innovatively integrate guide surfaces and oil grooves into traditional thrust bearings, enabling precise control of crankshaft axial positioning, significantly reducing runout and vibration at high speeds, and improving gear meshing stability. The Cummins 4948505F bearing utilizes a fluid dynamics simulation-designed oil circuit network to ensure uniform distribution of lubricating oil under axial loads, forming a stable oil film that effectively isolates metal-to-metal contact, reducing wear and heat buildup.
FAQ
Q: 1. Is the Cummins 4948505F bearing suitable for the X15 heavy-duty engine?
A:No. The 4948505F is a main thrust bearing designed specifically for medium-duty engines (such as the B5.9, ISB, and ISF3.8), while the X15 engine uses a separate thrust bearing (such as the 3681149). The two are completely incompatible in terms of load capacity, structural dimensions, and material standards, and are strictly prohibited from being used interchangeably.
Q: 2. What are the core advantages of the 4948505F bearing?
A: The 4948505F bearing uses an aluminum alloy matrix with a high-tin aluminum bronze composite coating, providing excellent anti-galling and thermal conductivity; its integrated asymmetric oil groove design achieves dynamic oil film compensation, extending service life by more than 30%.
Q: 3. What are the technical differences between the X15 thrust bearing and the 4948505F?
A:The X15 bearing is designed for axial impact loads of 120kN+, featuring multi-channel cooling oil passages and a reinforced rigid structure, supporting a 5000-hour overhaul interval. The 4948505F bearing, on the other hand, is suitable for medium-sized engines with loads of approximately 40–60kN. The two bearings are not interchangeable in terms of material thickness, heat dissipation path, or certification standards.
Q: 4. What is the HS code for the Cummins 4948505F bearing for export?
A: It is typically classified as parts for internal combustion engines, applicable to all Cummins engine bearings. This code is universally accepted in major trading countries worldwide and is used for customs declaration and tariff assessment.
Q: 5. Is this bearing a dangerous good or does it require special packaging?
A: It is not a dangerous good and does not require UN packaging or a dangerous goods label. For standard exports, it is wrapped in rust-proof paper and sealed in a rigid cardboard box or plastic pallet for moisture and shock protection; no special airtight or vacuum packaging is required.
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