4946030
Main Bearing
Cummins®

The Cummins 4946030 Main Bearing is a component designed for use in heavy-duty truck engines. Its purpose is to facilitate the smooth operation of the engine by supporting the crankshaft and minimizing friction between moving parts. This bearing is integral to the efficient and reliable performance of heavy-duty trucks, ensuring that the engine operates within optimal parameters.

Basic Concepts of Main Bearings

Main bearings are components found in internal combustion engines that support the crankshaft. Their function is to allow the crankshaft to rotate with minimal friction, which is vital for the engine’s smooth operation. Main bearings operate under high loads and speeds, making their design and material critical for engine durability and performance. The importance of main bearings lies in their ability to maintain the precise alignment of the crankshaft, which is essential for the engine’s balance and efficiency ¹.

Role of the 4946030 Main Bearing in Truck Operation

The Cummins 4946030 Main Bearing plays a specific role in the engine of a heavy-duty truck by supporting the crankshaft. This bearing is positioned between the crankshaft and the engine block, allowing the crankshaft to rotate smoothly. By reducing friction, the 4946030 Main Bearing helps to prevent excessive wear on the crankshaft and other engine components, contributing to the overall efficiency and longevity of the engine ².

Key Features

The Cummins 4946030 Main Bearing is characterized by its robust design and the high-quality materials used in its construction. It is engineered to withstand the high loads and temperatures encountered in heavy-duty truck engines. The bearing’s design includes precision-machined surfaces and a durable coating that enhances its performance and durability. These features ensure that the bearing can operate efficiently under demanding conditions, providing reliable support for the crankshaft.

Benefits

Using the Cummins 4946030 Main Bearing offers several benefits, including improved engine efficiency, reduced wear and tear on engine components, and enhanced reliability. The bearing’s design and materials contribute to these advantages by ensuring smooth operation and durability. By minimizing friction and supporting the crankshaft effectively, the 4946030 Main Bearing helps to maintain engine performance and extend the lifespan of the engine.

Troubleshooting and Maintenance

To troubleshoot common issues related to main bearings, it is important to monitor the engine for signs of excessive noise, vibration, or oil consumption, which may indicate bearing wear or failure. Regular maintenance practices, such as checking oil levels and quality, and adhering to recommended service intervals, are crucial for ensuring the longevity and optimal performance of the 4946030 Main Bearing. Proper lubrication and cleanliness are also key factors in maintaining the health of main bearings ³.

Compatibility

The Cummins Main Bearing part number 4946030 is designed to be compatible with a variety of engine models. Here is a breakdown of its compatibility across different engine types:

F2.8 Series Engines

• F2.8 CM2620 F135B
• F2.8 CM2220 F117
• F2.8 CM2220 F129

QSF2.8 Series Engines

• QSF2.8 CM2880 F104
• QSF2.8 CM2880 F105
• QSF2.8 CM2880 F108
• QSF2.8 CM2880 F114

R2.8 Series Engines

• R2.8 CM2220 R101B

By ensuring compatibility across these diverse engine models, the Cummins Main Bearing 4946030 serves as a versatile and essential component for maintaining the health and efficiency of the engines it supports.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines and related technologies. With a history of innovation and a commitment to quality, Cummins has established a reputation for producing reliable and efficient engine components. The company’s dedication to advancing technology and meeting the needs of its customers underscores its position as a leader in the automotive industry.

Conclusion

The Cummins 4946030 Main Bearing is a critical component in the operation of heavy-duty truck engines. Its role in supporting the crankshaft, reducing friction, and ensuring smooth engine operation contributes to the overall efficiency and reliability of the engine. Regular maintenance and proper troubleshooting are essential for the longevity of this Cummins part. With its compatibility across various engine models, the 4946030 Main Bearing stands as a testament to Cummins’ commitment to quality and innovation in engine component design.