4662107 BRG.;ROL. HITACHI for ZX70-5A/4TNV98

Heavy-Duty Load Support for Rotating Assemblies – Engineered to Handle High Radial and Thrust Loads with Minimal Friction.
The roller bearing is a precision component designed to support rotating shafts, gears, and wheels under high radial loads—and, depending on type (cylindrical, spherical, or needle), also significant thrust loads. This genuine Hitachi roller bearing is manufactured to exact dimensional tolerances for bore diameter, outer diameter, width, and internal clearance, ensuring proper fit, alignment, and load distribution. Experience smooth, low-friction rotation, reduced vibration, and extended service life in final drives, transmissions, swing devices, and wheel hubs with a bearing engineered for heavy-duty performance.

Premium Materials for Extreme Durability – Case-Hardened Alloy Steel with Precision-Ground Rollers and Raceways.
Manufactured from high-grade, vacuum-degassed chromium steel, this genuine roller bearing features precision-ground rollers, raceways, and flanges that minimize surface stress and rolling resistance. The optimized roller geometry—crowned or profiled—ensures even load distribution across the roller length, preventing edge loading and premature fatigue. Advanced heat treatment provides a hard, wear-resistant surface with a tough, impact-resistant core. Robust cages (stamped steel, machined brass, or polymer) maintain proper roller spacing, reducing friction and heat generation even under high-speed or shock-load conditions.