31321-X

The 31321-X is a robust, single-row tapered roller bearing designed to handle demanding combined load applications, effectively managing both heavy radial forces and axial thrust in one direction. This bearing is a classic metric-series component, easily identified by its separable design, consisting of a cone assembly (inner ring, rollers, and cage) and a cup (outer ring). This separability simplifies the mounting, dismounting, and maintenance process, a significant advantage in large-scale machinery. The key dimensions of this bearing are a 105 mm bore diameter, a 225 mm outside diameter, and a total bearing width (T) of 58 mm. The "X" designation typically indicates a bearing manufactured to an international standard for boundary dimensions, guaranteeing dimensional interchangeability and reliable performance across major brands.

Tapered roller bearings like the 31321-X are critical in rigid rotating assemblies, commonly used in pairs and set with a specific axial clearance or preload to optimize their life and performance. With a high basic dynamic load rating of approximately 410 kN and a static rating of around 510 kN, this component is built for durability and resilience under significant stress. Its design, featuring high-quality bearing steel and a standard pressed steel cage, makes it an ideal fit for heavy industrial sectors. Typical applications include axle arrangements in commercial vehicles, gear drives, rolling mills, and mining equipment, where consistent, high-load carrying capacity is essential for operational reliability and longevity.

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