9232360 Original Excavator Hydraulic Final Drive for Hitachi ZX330

The original Hitachi travel assembly with part number 9232360, also known as the final drive or travel reduction motor assembly. This component is a single-sided track drive core designed specifically for the Hitachi ZX330 series medium-sized hydraulic excavator (with a total working weight of approximately 33 tons). Its universal models usually cover same platform models with the same tonnage and chassis design, such as ZX330-3, ZX330-5G, ZX350H-3, etc. As the core drive unit of the original factory, its installation flange, output spline, and lower frame are precisely matched. It is strictly prohibited to use non original assemblies to avoid asynchronous walking, tooth breakage, or chassis damage.

This product is an integrated assembly of a helical axial piston hydraulic motor and a multi-stage planetary gear reducer. The hydraulic motor integrated internally can achieve a maximum working pressure of 35 MPa and a displacement of approximately 140-180 cc/rev. The planetary gear reducer converts the high-speed low torque of the motor into the low-speed high torque required by the driving wheels, with a total reduction ratio of over 50:1 and an output torque exceeding 20000 N · m. The assembly is equipped with high and low speed switching valves and overload relief valves to adapt to different road conditions and protect the system. Its design takes into account ultimate torque output, compact space layout, and long-term lubrication, and is the result of optimization for heavy-duty conditions of medium-sized equipment such as ZX330.

Installation specifications: 1 Cleaning alignment: Before installation, it is necessary to thoroughly clean the mounting surface of the lower frame and ensure that the output shaft spline is perfectly aligned with the internal spline of the drive wheel, which can be assisted by guide pins. 2. Tighten bolts: A torque wrench must be used to tighten all installation bolts in a staggered manner according to the cross sequence and torque specified in the maintenance manual (usually 280-350 N · m). 3. Oil filling: After installation, fill the designated heavy-duty gear oil (such as SAE 85W-140 API GL-5) through an independent oil filling port, and the oil level should reach the inspection hole standard.