3109161 GEAR;PLANETARY HITACHI for ZX75US-5A/4TNV98

Precision Power Distribution in Compact Drives – Engineered for Smooth Torque Splitting and High Reduction Ratios.
The planetary gear is a precision component that enables compact, high-torque power transmission within final drives, swing devices, travel motors, and transmissions. This genuine Hitachi planetary gear is precision-machined to exact tooth geometry, helix angle, and profile specifications, ensuring perfect meshing with mating sun gears and ring gears. Experience smooth, balanced load sharing across multiple planets, reduced vibration, and efficient power delivery with a gear engineered for rotational precision and high reduction ratios.

Premium Metallurgy for Extreme Load and Fatigue Resistance – Case-Hardened Alloy Steel with Precision-Ground Teeth.
Manufactured from high-strength alloy steel and precisely case-hardened, this genuine planetary gear achieves a hard, wear-resistant surface that resists pitting, spalling, and abrasive wear, combined with a ductile core that absorbs shock loads and resists tooth fracture. Precision-ground tooth flanks and optimized root fillets minimize stress concentrations, while induction-hardened bore and thrust surfaces resist fretting and galling under heavy loads. Advanced finishing processes ensure consistent tooth contact patterns for quiet operation and extended gear life.