8113562 SET;PINION for Hitachi ZW310-6/QSK19

Engineered for Accurate Torque Transfer and Mesh Alignment

The pinion set is a critical drivetrain component that transfers power from the motor or transmission to the final drive or differential. This genuine Hitachi pinion set is precision-manufactured to exact tooth geometry and hardness specifications, ensuring perfect mesh with the mating ring gear. Experience smooth, quiet operation, reduced vibration, and efficient power delivery with a set designed for optimal contact pattern and load distribution.

Factory-Matched Pinion and Hardware for Seamless Integration

This genuine set includes the pinion gear and all necessary companion components—such as the pinion shaft, bearing spacer, nut, and preload washers—carefully matched to Hitachi’s original tolerances. The precision-ground teeth and case-hardened surfaces resist wear and fatigue under shock loads, while the accurately machined splines or keyways ensure secure coupling. Every component is manufactured from high-strength alloy steel and heat-treated for maximum durability.

Genuine Hitachi: Protect Your Drivetrain from Premature Wear

An incorrectly machined or low-quality pinion set leads to improper gear mesh, excessive noise, heat generation, and rapid tooth wear—resulting in drivetrain failure and unplanned downtime. Aftermarket sets often lack the precision lapping, correct metallurgy, or matched component pairing required for reliable operation. This genuine Hitachi component is manufactured to meet all original equipment specifications for geometry, hardness, and dimensional accuracy. Trust the pinion set engineered for Hitachi driveline reliability.