4713379 BRG.;TAPERED HITACHI for ZW220/6HK1

Engineered for Optimal Load Distribution and Shaft Positioning

The tapered roller bearing is designed to simultaneously support high radial and axial (thrust) loads while maintaining precise shaft positioning. This genuine Hitachi tapered bearing features precision-ground raceways and rollers with carefully calculated contact angles, ensuring proper load distribution across the roller-raceway interface. Experience smooth rotation, minimal end play, and reliable performance in final drives, wheel hubs, swing devices, and transmissions with a bearing engineered for heavy-duty combined load applications.

Case-Hardened Alloy Steel with Precision Geometry

Manufactured from high-grade, vacuum-degassed chromium steel, this genuine tapered bearing undergoes precise case-hardening to achieve a hard, wear-resistant surface and a tough, impact-resistant core. The precision-ground rollers feature optimized crowned profiles that prevent edge stress concentration, while the accurately machined cage maintains proper roller spacing for reduced friction and heat generation. Every component—cone (inner ring), cup (outer ring), rollers, and cage—is manufactured to exacting tolerances for interference fit, internal clearance, and preload adjustment, ensuring consistent performance under shock loads and continuous operation.