200490
Main Bearing
Cummins®

The Cummins 200490 Main Bearing is a component designed for use in commercial trucks. It plays a role in the engine’s operation by supporting the crankshaft and facilitating smooth rotation. This bearing is integral to maintaining the engine’s efficiency and longevity, ensuring that the truck operates reliably under various conditions.

Basic Concepts of Main Bearings

Main bearings are components found in internal combustion engines. Their primary function is to support the crankshaft, allowing it to rotate with minimal friction. By reducing friction, main bearings help to enhance the engine’s overall performance and extend its operational life. They are typically made from materials that can withstand high loads and temperatures, ensuring durability and reliability in demanding applications ¹.

Role of the 200490 Main Bearing in Truck Operation

This Cummins part plays a specific role in the operation of a truck by supporting the crankshaft. This support is crucial for the crankshaft’s rotation, which is a fundamental aspect of the engine’s function. By minimizing friction between the crankshaft and the engine block, the 200490 Main Bearing helps to ensure smooth operation and reduces wear on the engine components ².

Key Features of the 200490 Main Bearing

This part is characterized by its robust design and the materials used in its construction. It is engineered to handle the high loads and temperatures typical of commercial truck engines. The bearing’s design includes features that enhance its performance, such as precision machining for a perfect fit and materials that offer superior resistance to wear and corrosion.

Benefits of Using the 200490 Main Bearing

Using this Cummins part in commercial trucks offers several benefits. These include improved engine efficiency due to reduced friction, enhanced durability under high-stress conditions, and increased reliability, which is critical for the consistent performance of heavy-duty trucks. The bearing’s design and materials contribute to these advantages, making it a valuable component for truck engines ³.

Installation and Maintenance

Proper installation of this part is key to ensuring its optimal performance and longevity. It should be installed according to manufacturer guidelines to avoid issues such as misalignment or excessive clearance, which can lead to premature wear. Regular maintenance, including checks for wear and proper lubrication, is also important to ensure the bearing continues to function effectively.

Troubleshooting Common Issues

Common issues with main bearings can include excessive wear, noise during operation, or failure due to lack of lubrication. Diagnostic methods for identifying these problems may involve visual inspection, listening for unusual sounds, or using diagnostic tools to measure bearing clearance. Troubleshooting steps can range from simple lubrication adjustments to more complex repairs or replacements, depending on the severity of the issue.

Performance Enhancements

The use of high-quality main bearings like the Cummins 200490 can contribute to overall engine performance enhancements in heavy-duty trucks. By ensuring smooth crankshaft rotation with minimal friction, these bearings help to maintain engine efficiency and reliability. This can lead to improved truck performance, including better fuel efficiency and reduced maintenance needs.

Compatibility and Application

This part is designed for specific applications within the Cummins engine lineup. Ensuring compatibility with the correct engine model is important for optimal performance and longevity. This bearing is typically used in engines where high durability and reliability are required, making it suitable for a range of commercial truck applications.

Historical Development of Main Bearings

The evolution of main bearings in automotive and truck engines has seen significant advancements over time. Early bearings were made from materials like bronze and babbitt, which offered basic friction reduction and support. Modern bearings, like the Cummins 200490, incorporate advanced materials and designs that provide superior performance, durability, and efficiency in today’s high-demand engines.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a reputation for producing high-quality automotive components, Cummins is committed to innovation and excellence in the industry. The company’s products, including the 200490 Main Bearing, are designed to meet the rigorous demands of commercial and industrial applications, ensuring reliability and performance.

Role of Part 200490 Main Bearing in Engine Systems

This part is an essential component that facilitates the smooth operation of various engine systems. Its primary function is to support the crankshaft, allowing it to rotate with minimal friction.

In a Cylinder Short Block assembly, the main bearing ensures that the crankshaft is properly aligned and supported. This is vital for the efficient transfer of power from the crankshaft to the rest of the engine components. The bearing reduces wear and tear on the crankshaft, enhancing the longevity and performance of the engine.

For a Cylinder Short V-12 Block, the importance of the main bearing is amplified due to the increased complexity and power output of a V-12 engine. The bearing must handle higher loads and stresses, making its role even more significant in maintaining engine balance and performance.

When integrated with a Main Bearing Stud Set, this part works in conjunction to provide additional support and stability to the crankshaft. The stud set helps in securing the bearing in place, ensuring that it can withstand the dynamic forces generated during engine operation.

Conclusion

In summary, the 200490 Main Bearing is a fundamental component in the short block assembly, contributing to the efficient and reliable operation of the engine by supporting the crankshaft and reducing friction.