4948508
Connecting Rod Bearing
Cummins®

The 4948508 Connecting Rod Bearing, manufactured by Cummins, is a component designed for use in heavy-duty truck engines. Cummins, a well-established name in the engine manufacturing industry, produces a range of parts that are integral to the performance and reliability of heavy-duty engines. This Cummins part is significant in this context as it plays a role in ensuring the smooth operation of the engine by facilitating the connection between the crankshaft and the piston ¹.

Basic Concepts of Connecting Rod Bearings

Connecting rod bearings are components found in internal combustion engines. Their general function is to reduce friction between the connecting rod and the crankshaft journal. By providing a low-friction interface, these bearings contribute to the efficient transfer of power from the piston to the crankshaft, which is fundamental to the engine’s operation. They also help in absorbing the forces generated during the combustion process, thereby protecting the engine’s internal components from excessive wear and damage ².

Role of the 4948508 Connecting Rod Bearing in Truck Engines

The 4948508 Connecting Rod Bearing is specifically designed to operate within the demanding environment of a truck engine. It facilitates the connection between the crankshaft and the piston by allowing the connecting rod to pivot smoothly as the engine operates. This bearing enables the efficient conversion of the linear motion of the piston into the rotational motion of the crankshaft, which is necessary for the engine to produce power ³.

Key Features of the 4948508 Connecting Rod Bearing

The 4948508 Connecting Rod Bearing is characterized by its robust design and material composition, which are tailored to meet the requirements of heavy-duty applications. It is constructed from high-quality materials that offer superior resistance to wear and fatigue. The bearing’s design includes precision-machined surfaces and a tri-metal construction that enhances its performance and durability under the high loads and temperatures typical of truck engines.

Benefits of Using the 4948508 Connecting Rod Bearing

Utilizing the 4948508 Connecting Rod Bearing in a truck engine can lead to several advantages. These include improved engine efficiency due to reduced friction, which allows for smoother operation and potentially lower fuel consumption. Additionally, the bearing’s design contributes to reduced wear on engine components, leading to enhanced longevity and reliability of the engine.

Installation and Maintenance Guidelines

Proper installation of the 4948508 Connecting Rod Bearing is vital to ensure its effective performance. It should be installed with careful attention to alignment and torque specifications to prevent damage and ensure a secure fit. Regular maintenance, including periodic inspection for signs of wear or damage, is recommended to maintain optimal performance. Following the manufacturer’s guidelines for maintenance can help in identifying potential issues before they lead to significant problems.

Troubleshooting Common Issues

Connecting rod bearings, including the 4948508 model, may encounter issues over time. Common problems can include excessive wear, noise during engine operation, or failure of the bearing. Symptoms to watch for include unusual engine noises, decreased performance, or visible damage to the bearing upon inspection. Potential causes may range from improper installation to excessive engine loads. Addressing these issues promptly, either through repair or replacement, is important to maintain engine health.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and reliability in the heavy-duty truck industry. The company’s product range includes a variety of engines and components designed to meet the needs of different applications, from on-highway to off-highway and industrial uses. Cummins’ commitment to innovation and customer satisfaction has made it a preferred choice among professionals in the industry.

Cummins Connecting Rod Bearing 4948508 Compatibility

The Cummins Connecting Rod Bearing part number 4948508 is designed to fit a variety of Cummins engines, ensuring reliable performance and durability. This bearing is a critical component that helps reduce friction between the connecting rod and the crankshaft, contributing to the engine’s overall efficiency and longevity.

Compatible Engines

• B4.5 CM2350 B129B
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB4.5 CM2350 B104
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123
• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

This bearing is engineered to meet the specific requirements of these engines, providing a precise fit and optimal performance. Whether you are working with the B4.5, D4.0, F3.8, F4.5, ISB4.5, ISF3.8, ISF4.5, or QSF3.8 series, the 4948508 Connecting Rod Bearing is a reliable choice to ensure your engine operates smoothly and efficiently.

Role of Part 4948508 Connecting Rod Bearing in Engine Systems

The part 4948508 connecting rod bearing is an essential component that facilitates the smooth operation of several key engine systems. It is strategically positioned between the connecting rod and the crankshaft journal, ensuring minimal friction and efficient power transfer from the piston to the crankshaft.

Interaction with the Connecting Rod and Piston

The connecting rod bearing works in tandem with the connecting rod and piston assembly. As the piston moves up and down within the cylinder, the connecting rod translates this linear motion into rotational motion of the crankshaft. The bearing ensures that this motion is smooth and reduces wear on both the connecting rod and the crankshaft journal.

Integration with the Cylinder Head and Injector Plumbing

While the connecting rod bearing is primarily involved in the lower end of the engine, its efficient operation indirectly supports the performance of the cylinder head and injector plumbing. A well-functioning bearing allows for consistent engine performance, which is vital for the precise timing required by the injectors and the combustion process managed by the cylinder head.

Contribution to Overall Engine Performance

The efficiency of the connecting rod bearing directly influences engine performance. By reducing friction, it helps maintain optimal operating temperatures and ensures that the engine runs smoothly. This, in turn, allows other components such as the camshaft and piston to operate within their designed parameters, contributing to the engine’s overall reliability and performance.

Conclusion

The 4948508 Connecting Rod Bearing by Cummins is a critical component in the operation of heavy-duty truck engines. Its design and material composition are tailored to withstand the demanding conditions of truck engines, ensuring efficient power transfer and reduced friction. Proper installation and maintenance of this part are essential for optimal engine performance and longevity. By understanding the role and benefits of the 4948508 Connecting Rod Bearing, professionals can ensure the reliability and efficiency of their engine systems.