3966844
Roller Bearing
Cummins®

The 3966844 Roller Bearing, a component produced by Cummins, is designed for use in commercial trucks. This article provides an overview of the roller bearing, its function, key features, benefits, and maintenance suggestions.

Basic Concepts of Roller Bearings

Roller bearings are a type of rolling-element bearing that use cylinders to maintain the separation between moving parts. They are designed to carry radial loads and, in some configurations, axial loads. The primary function of a roller bearing is to facilitate smooth rotation and reduce friction between moving parts ¹.

Function of the 3966844 Roller Bearing

The 3966844 Roller Bearing supports rotating components within the truck’s engine or transmission. It reduces friction and wear by allowing parts to rotate with minimal resistance. This bearing is typically used in applications where heavy loads and high speeds are present ².

Key Features

• Constructed with high-quality materials to ensure durability and longevity.
• Designed to handle significant radial loads.
• Features precision-machined components for optimal performance.
• Compatible with specific Cummins engine models and other commercial truck applications.

Benefits

• Enhances the efficiency of rotating components by reducing friction.
• Contributes to the overall reliability and performance of the truck.
• Designed to withstand harsh operating conditions typical in commercial trucking.
• Helps in extending the service life of associated components by providing smooth operation.

Troubleshooting and Maintenance

Regular inspection of the 3966844 Roller Bearing is recommended to identify any signs of wear or damage. Common issues include noise, vibration, and increased operating temperature, which may indicate bearing failure. Maintenance practices include:

• Checking for proper lubrication.
• Ensuring there is no contamination from dirt or debris.
• Monitoring for any unusual wear patterns or damage.
• Replacing the bearing if significant wear or failure is detected.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. The company is known for its commitment to quality and innovation in the automotive and heavy-duty truck industries ³.

Cummins Engine Compatibility with Part 3966844

The 3966844 Roller Bearing is a critical component in various Cummins engine models. This bearing ensures smooth operation and longevity of the engine by reducing friction between moving parts. Below is a detailed overview of the engines that are compatible with this specific part.

Cummins 4B3.9 Engines

The 4B3.9 engine series is known for its reliability and efficiency. The 3966844 Roller Bearing is essential for maintaining the smooth operation of the engine’s internal components.

Cummins 6B5.9 Engines

The 6B5.9 engine series is another robust model in Cummins’ lineup. The 3966844 plays a crucial role in ensuring the longevity and performance of these engines.

Cummins 6C8.3 Engines

The 6C8.3 engine series is designed for heavy-duty applications. The 3966844 is integral to the engine’s ability to handle high loads and maintain efficiency.

Cummins B4.5 Engines

The B4.5 engine series is a versatile model used in various applications. The 3966844 is a key component in maintaining the smooth operation of these engines.

Cummins B4.5 CM2350 B129B Engines

The B4.5 CM2350 B129B engine series is designed for specific applications requiring high performance. The 3966844 is essential for the engine’s reliability and efficiency.

Cummins B5.6 CM2670 B152B Engines

The B5.6 CM2670 B152B engine series is another specialized model. The 3966844 ensures the engine operates smoothly and efficiently.

Cummins B5.9 CM2670 B166C Engines

The B5.9 CM2670 B166C engine series is known for its power and reliability. The 3966844 is crucial for maintaining the engine’s performance.

Cummins B5.9 GAS PLUS CM556 Engines

The B5.9 GAS PLUS CM556 engine series is designed for high-performance applications. The 3966844 ensures the engine’s internal components operate smoothly.

Cummins B6.7 CM2350 B135B Engines

The B6.7 CM2350 B135B engine series is another high-performance model. The 3966844 is essential for the engine’s longevity and efficiency.

Cummins B6.7 CM2670 B153B Engines

The B6.7 CM2670 B153B engine series is known for its durability and performance. The 3966844 ensures the engine operates smoothly.

Cummins B6.7 CM2670 B164C Engines

The B6.7 CM2670 B164C engine series is another robust model. The 3966844 is crucial for maintaining the engine’s performance.

Cummins C GAS PLUS CM556 Engines

The C GAS PLUS CM556 engine series is designed for high-performance applications. The 3966844 ensures the engine’s internal components operate smoothly.

Cummins D4.0 CM2620 D103B Engines

The D4.0 CM2620 D103B engine series is known for its reliability and efficiency. The 3966844 is essential for maintaining the engine’s smooth operation.

Cummins F3.8 CM2350 Engines

The F3.8 CM2350 engine series is another reliable model. The 3966844 ensures the engine operates smoothly and efficiently.

Cummins F3.8 CM2620 Engines

The F3.8 CM2620 engine series is known for its durability and performance. The 3966844 is crucial for maintaining the engine’s smooth operation.

Cummins F4.5 CM2620 Engines

The F4.5 CM2620 engine series is another robust model. The 3966844 ensures the engine operates smoothly and efficiently.

Cummins ISB CM2150 Engines

The ISB CM2150 engine series is a versatile model used in various applications. The 3966844 is essential for maintaining the engine’s smooth operation.

Cummins ISB/ISD4.5 CM2150 B119 Engines

The ISB/ISD4.5 CM2150 B119 engine series is designed for specific applications requiring high performance. The 3966844 ensures the engine operates smoothly.

Cummins ISB/ISD6.7 CM2150 SN Engines

The ISB/ISD6.7 CM2150 SN engine series is another specialized model. The 3966844 is crucial for maintaining the engine’s performance.

Cummins ISB4.5 CM2350 B104 Engines

The ISB4.5 CM2350 B104 engine series is known for its reliability and efficiency. The 3966844 ensures the engine operates smoothly.

Cummins ISB5.9 CM2880 Engines

The ISB5.9 CM2880 engine series is another robust model. The 3966844 is essential for maintaining the engine’s smooth operation.

Cummins ISB5.9 CM2880 B110 Engines

The ISB5.9 CM2880 B110 engine series is designed for specific applications requiring high performance. The 3966844 ensures the engine operates smoothly.

Cummins ISB5.9 CM2880 B127 Engines

The ISB5.9 CM2880 B127 engine series is another specialized model. The 3966844 is crucial for maintaining the engine’s performance.

Cummins ISB5.9 CM2880 B140 Engines

The ISB5.9 CM2880 B140 engine series is known for its durability and performance. The 3966844 ensures the engine operates smoothly.

Role of Part 3966844 Roller Bearing in Engine Systems

The 3966844 Roller Bearing is an essential component in various engine systems, contributing to the smooth operation and efficiency of several key elements.

Drive Systems

In drive systems, the 3966844 Roller Bearing facilitates the rotational movement between the drive shaft and the housing. This bearing ensures minimal friction, allowing for efficient power transmission from the engine to other components. Its role is significant in maintaining the integrity and performance of the drive system, ensuring that power is delivered smoothly and consistently.

Fan Systems

Within fan systems, the 3966844 Roller Bearing supports the fan shaft, enabling it to rotate with minimal resistance. This is vital for the fan’s ability to effectively cool the engine by drawing air through the radiator. The bearing’s precision and durability help in maintaining the fan’s operational efficiency, which is essential for preventing engine overheating.

Fan Drive

In the context of the fan drive, the 3966844 Roller Bearing is instrumental in connecting the fan to the engine’s crankshaft or a separate pulley system. It allows for the smooth transfer of motion, ensuring that the fan operates in sync with the engine’s speed. This synchronization is key to optimizing the cooling process and enhancing engine performance.

Fan Support

The 3966844 Roller Bearing also plays a role in fan support structures, where it helps in stabilizing the fan assembly. By reducing friction and wear, it contributes to the longevity and reliability of the fan support system, ensuring that the fan remains securely in place and functions correctly under varying engine loads.

Long Block Kit

In a long block kit, which includes the engine block, crankshaft, pistons, and other essential components, the 3966844 Roller Bearing is often used in various rotating assemblies. Its application in this kit ensures that all moving parts operate with precision and minimal wear, contributing to the overall performance and durability of the engine.

The integration of the 3966844 Roller Bearing into these engine systems underscores its importance in maintaining the efficiency, reliability, and performance of the engine as a whole.

Conclusion

The 3966844 Roller Bearing is a vital component in commercial truck engines, offering durability, efficiency, and reliability. Regular maintenance and proper use ensure its longevity and the smooth operation of the engine systems it supports.