The TIMKEN 399 AS is a high-performance single-row Tapered Roller Bearing engineered specifically for applications demanding superior reliability under combined heavy radial and axial loads. Constructed from case-carburized, high-purity alloy steel, this bearing assembly (cone/inner ring) features precision-honed raceways and optimized roller geometry to ensure uniform load distribution, minimized friction, and exceptional fatigue life. Its robust design is crucial for maintaining shaft stability and managing alignment variations in challenging industrial environments such as heavy-duty transmissions, differential systems, and primary gear drives. The geometric stability and dimensional accuracy of the 399 AS directly contribute to lower operating temperatures and reduced maintenance frequency.
Choosing the TIMKEN 399 AS significantly improves machine uptime and reduces the Total Cost of Ownership (TCO) compared to standard commercial alternatives. Designed to meet stringent operational standards, this bearing delivers predictable performance even when exposed to high speeds, shock loads, and contaminated working conditions. Its proven durability makes it the preferred replacement component for critical machinery in mining, construction, agriculture, and general manufacturing, ensuring extended service intervals and maximized production output. The 399 AS offers unmatched longevity and load-handling capabilities essential for modern industrial throughput.
Key Features
Exceptional capacity for combined radial and thrust loads.
Manufactured with case-carburized steel for superior surface hardness and core strength, maximizing durability.
Optimized roller geometry and surface finish minimize friction, leading to reduced heat generation and extended lubricant life.
High dimensional precision ensures accurate shaft positioning and reliable performance in demanding applications.
Interchangeable component design facilitates easy replacement and minimizes maintenance complexity.
Designed for severe operating environments including high vibration and contamination.
