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9W9134
CAT
9W9134
This Gear is a core power transmission component engineered for the transmission systems and travel mechanisms of excavators, loaders, and other heavy construction machinery. Forged from high-quality alloy steel and finished with precision machining and tooth grinding, it is designed to deliver precise, robust, and durable power transfer in extreme heavy-load and harsh working conditions, such as mining and construction sites.
Forged Steel – Tough Core:
Unlike standard cast gears, the blank of this gear is forged from high-quality alloy steel. The forging process optimizes the internal metallographic structure, eliminating porosity and inclusions while ensuring continuous, dense grain flow along the tooth profile. This provides exceptional core toughness and impact resistance, allowing the gear to withstand the massive shock loads generated during machine startup, braking, and digging operations, effectively preventing tooth breakage.
Precision Ground – Accurate Transmission:
The gear teeth and inner bore undergo precision grinding. This results in high dimensional accuracy and a superior surface finish, ensuring maximum tooth contact and smooth meshing. This significantly reduces operational noise and vibration, improves transmission efficiency, and helps lower fuel consumption.
Excellent Wear Resistance & Strength:
Through carburizing, quenching, or tempering heat treatments, the tooth surface hardness reaches HRC 60+. This creates an ideal "hard shell, tough core" structure that resists wear and pitting while maintaining the strength to handle heavy loads without deformation, significantly extending the overhaul cycle.
Built for Extreme Conditions:
The structural design is optimized for the harshest environments, including high temperatures, heavy dust, and steep terrain. It serves as a key load-bearing component in gearboxes, transfer cases, swing reducers, and travel motors, ensuring reliable 24/7 operation.
Parameter | Specification |
|---|---|
Product Type | Transmission Gear / Planetary Gear / Ring Gear / Drive Gear |
Material | Premium Alloy Steel (20CrMnTi / 42CrMo / 20CrNiMo) |
Process | Forging + Precision Machining + Heat Treatment + Tooth Grinding |
Precision Grade | ISO Grade 6-7 (High Precision) |
Surface Hardness | HRC 58-62 (Tooth Surface) |
Compatible Systems | Gearboxes, Swing Reducers, Travel Motors, Final Drives |
Stock Status | Sufficient Ready Stock (Fast Delivery) |
Transmission Systems: Gear sets for excavator/loader gearboxes, torque converter pump wheel rings.
Travel Mechanisms: Sprockets, idler gears, final drive sun gears, and planetary gears.
Slewing Mechanisms: Swing drive pinions, gears for swing reduction units.
Industrial Equipment: Heavy-duty reducers, gears for port lifting machinery.
We strictly adhere to the ISO 9001 quality management system. Every gear undergoes rigorous outgoing inspections, including hardness testing, Magnetic Particle Inspection (MPI) for cracks, and tooth profile accuracy checks, ensuring zero defects. We are committed to providing reliable and high-performance power transmission solutions.
Installation Recommendation:
Clean the shaft journal and gear bore before installation and check the fit tolerance. Due to the precision grinding, we recommend using a dedicated tool for press-fitting or thermal assembly (heating the gear). Do not strike the teeth directly with a hammer to avoid damaging the precision tooth form.
