3112323 Loader Clutch Bearing for ZW310-6

The original clutch bearing (part number 3112323) is a genuine transmission component of Hitachi ZW310-6 wheel loader, mainly used for the clutch disengagement system of this model. ZW310-6 is a 31 ton wheel loader from Hitachi Construction Machinery, typically equipped with a hydraulic torque converter gearbox and manual/semi-automatic clutch assembly. The universal number 3112323 of this bearing is its unique identifier in Hitachi's original parts system, ensuring that it matches the dimensions and working conditions of the main clutch pressure plate, release lever, and transmission input shaft perfectly. When placing an order, it is necessary to provide the complete model and serial number of the loader for verification to avoid mismatches.

This product is a clutch release bearing (also known as a release bearing) specifically designed for construction machinery, which complies with the JB/T 5312-2011 standard for automotive clutch release bearings and their units. Its structure usually consists of an outer ring, an inner ring, rolling elements (balls or rollers), a cage, and contact surfaces. It is made of chromium steel, stainless steel, or special high-quality bearing steel material and has undergone hardening treatment. The internal design includes a three lip sealing structure and high-temperature resistant grease, with self-lubricating, low vibration, and automatic centering functions. The main function is to control the separation or engagement of the clutch pressure plate and flywheel through axial movement, achieving power transmission switching between the engine and transmission system, and ensuring smooth starting and shifting of the equipment.

It is recommended to check the bearings for any abnormal noise (such as "rustling" sound), overheating, erosion, or signs of premature wear every 300 to 500 hours of work. During maintenance, it is necessary to regularly replenish high-temperature resistant lithium based grease and ensure that the clutch's free stroke is adjusted to 30-40mm (corresponding to a clearance of about 2.5mm between the release bearing and the release lever) to avoid overheating caused by the bearing being constantly engaged due to a small stroke. When replacing, thoroughly clean the installation area, install according to the torque specified in the maintenance manual, and check the flatness of the separation lever, the deformation of the separation fork, and the elasticity of the return spring. Daily operation should avoid semi clutch state and reduce frequent engagement/disengagement times to extend the service life of bearings.