Genuine Cummins Roller Bearing 3003354 for K19 K38

The Roller Bearing 3003354 is a critical component engineered for K19/K38 diesel engines, commonly used in heavy construction machinery. Designed to support radial and axial loads, this bearing ensures smooth operation of engine subsystems like crankshafts and camshafts. Its robust construction and precision alignment reduce wear, extending engine lifespan even under continuous high-stress conditions. As a direct replacement part, it adheres to OEM specifications, guaranteeing seamless integration and optimal performance in demanding applications.

Crafted from GCr15 chromium steel, this roller bearing undergoes advanced heat treatment processes, including carburizing and tempering, to achieve exceptional hardness (60-65 HRC) and fatigue resistance. The material's corrosion-resistant properties are enhanced by a phosphate coating, ideal for humid or abrasive environments. Precision grinding ensures micron-level tolerances (±0.002mm), while a triple-lip seal retains grease and blocks contaminants. The cage structure, made from machined brass, maintains roller alignment under heavy vibration, preventing premature failure.

This bearing is tailored for construction and industrial machinery, including excavators (e.g., Komatsu PC200), bulldozers (Caterpillar D6T), and loaders. It performs reliably in mining drills, agricultural tractors, and material-handling equipment, where shock loads and variable RPMs are common. Suitable for engines operating in temperatures from -30°C to 150°C, it withstands dusty quarries, muddy terrains, and high-humidity environments.

High Load Capacity: Supports up to 45 kN dynamic radial loads and 30 kN axial loads.

Low-Friction Design: Nitrided rollers reduce energy loss, improving fuel efficiency.

Sealed Protection: Triple-layer seals prevent lubricant leakage and ingress of particulates.

Thermal Stability: Retains dimensional integrity at temperatures up to 150°C.

Pre-Lubricated: Packed with high-temperature lithium-complex grease for immediate use.