4713380 Original Loader Transmission Bearings for ZW310-5A

Hitachi original loader transmission bearings (universal part number: 4713380) are key load-bearing and rotating components in the transmission system. According to the universal compatibility information of Hitachi genuine parts, this bearing is mainly suitable for Hitachi ZW series wheel loaders, such as ZW140, ZW180, ZW220, ZW250, ZW310, ZW330, ZW370-G, ZW550-G and other medium and large models. It may be applied to key parts such as gearboxes, transfer cases, drive axles, wheel reducers, or drive shafts, bearing radial and axial loads and ensuring high-precision rotation of related shaft components.

This transmission bearing is the core basic component that ensures smooth and efficient power transmission of the loader. As an original component, it is made of high-quality materials that meet strict engineering machinery standards, such as high-purity chromium steel or carburizing steel, and undergoes precision heat treatment (such as quenching and tempering) to give it extremely high hardness, wear resistance, and fatigue strength. The rolling elements (steel balls or rollers) and raceways of bearings undergo ultra precision machining, resulting in extremely high surface smoothness. With precise clearance design, they can maintain low friction, low noise, and long service life under high load, high speed, and impact vibration conditions.

When disassembling and installing bearings, special tools must be used, and it is strictly prohibited to directly strike the inner and outer rings of the bearings to avoid damage. Clean the shaft and bearing seat before installation, and ensure that the mating surface is free of burrs and rust. After installation, it is necessary to check whether the rotation is flexible and not stuck. When the bearing experiences significant increase in clearance, inflexible rotation, pitting or peeling of the raceway or rolling elements, it must be replaced in a timely manner.