3112305 Original Loader Ball Bearing for Hitachi ZW310-5A

Part number 3112305 is the original ball bearing provided by Hitachi for the ZW310-5A wheel loader. This component belongs to standardized deep groove ball bearings and is a widely used core support component in engineering machinery transmission, walking, rotation and other systems. As a designated component of the original factory, its dimensional accuracy and material grade fully match the requirements of ZW310-5A specific installation positions (such as wheel hub, tensioner, gearbox)

This product is a deep groove ball bearing, with high carbon chromium bearing steel used for the inner and outer rings and balls. After quenching and precision grinding, it presents a silver gray metallic luster and delicate brushed texture in the picture, with high hardness and wear resistance. Internally, steel plate stamping retaining frames are used to ensure even distribution of ball bearings and withstand radial loads. Its accuracy level is usually P6 or higher, and it can adapt to high-speed rotation (maximum speed can reach thousands of revolutions per minute) and certain radial impact. The working temperature range is -30 ℃ to+120 ℃, which can adapt to the temperature changes during the operation of the loader. Its core function is to reduce rotational friction and provide precise and stable radial support for the shaft.

Installation specifications (key): 1 Cleaning: Before installation, thoroughly clean the bearing itself, installation shaft, and bearing seat with cleaning agent and lint free cloth to ensure that there are no sand particles or metal shavings. 2. Heating installation: For interference fit, it is recommended to evenly heat the bearing with an oil bath to 80-100 ℃ and quickly and smoothly install it on the shaft. Direct tapping is strictly prohibited. 3. Lubrication: Fill the bearing raceway with a sufficient amount of specified high-temperature grease before installation. 4. Alignment and fastening: During installation, ensure that the bearings are absolutely aligned with the shaft and seat to avoid generating unbalanced loads. Use a torque wrench to tighten the locking nut or end cap to the specified torque.