Product introduction
The Cummins engine bearing, model G3978818, is a key component in engine bearing systems, belonging to the high-precision crankshaft support system. Together with Cummins Cam Bearings, it forms the core transmission structure of the engine. This product is made of high-strength alloy steel and, through precision machining and special surface treatment processes, ensures a precise fit with the crankshaft and excellent wear resistance. It is suitable for engine models such as the Cummins QSB6.7. The Cummins main bearing, as an important component of engine bearing systems, features optimized oil lubrication systems, strict tolerance control, and long service life reliability. It is widely used in generator sets, construction machinery, and commercial vehicle power systems. The camshaft bearing works in conjunction with the main bearing to ensure efficient and stable engine operation.
Product Images
Product Parameters
| Parameter category | Detailed Description |
| Part number | G3978818 |
| Product type | Engine main bearing |
| Applicable engine | It is mainly matched with engine models such as Cummins QSB6.7 |
| Product features | 1. High reliability : Utilizing high-quality materials and precise manufacturing processes to ensure long-term stable operation 2. Long-life design : Optimize the surface treatment technology of bearings to enhance wear resistance 3. Precise fit : Strict tolerance control to ensure the best fit with the crankshaft 4. High-efficiency lubrication : Special oil passage design ensures adequate lubrication |
Product Advantages
Special heat treatment processes ensure the structural stability of the bearings under high pressure and high temperature conditions; high-precision CNC machining guarantees that the fit tolerance between the bearings and the crankshaft/camshaft is controlled at the micron level, reducing operating friction loss, significantly improving wear resistance, and extending the overall service life of the engine.
FAQ
Q: 1. What are the main application scenarios for Cummins main bearing G3978818?
A: This product is mainly used in generator sets, construction machinery, commercial vehicle power systems, and industrial engines, and is a key component of the Cummins engine crankshaft support system.
Q: 2. What are the material and manufacturing characteristics of the G3978818 main bearing?
A: It is made of high-strength alloy steel, precision-machined, and undergoes special surface treatment processes to ensure precise fit with the crankshaft and excellent wear resistance.
Q: 3. What are the material and performance characteristics of the camshaft bearing?
A: It is made of high-quality alloy steel and undergoes a special heat treatment process, featuring high precision, high load-bearing capacity, and long service life.
Q: 4. What are the packaging requirements for international shipping of Cummins main bearing G3978818?
A: High-strength protective packaging and wooden pallets should be used, with the bearing secured and fitted with anti-slip rubber pads. The outer layer should be wrapped with moisture-proof stretch film and waterproof tarpaulin.
Q: 5. What precautions should be taken when shipping camshaft bearings internationally?
A: During transportation, vibration and impact must be avoided. A "layered protection + precise securing" packaging solution is recommended, and warning labels such as "Precision Equipment" should be clearly marked on the box.
Q: 6. What are the customs declaration requirements for international transportation of engine bearing components?
A: Core documents such as commercial invoices, packing lists, and certificates of origin are required. Ensure accurate HS code classification and compliance with the importing country's declaration requirements.
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