4084073770 Loader Bushing for ZW310-5A

Part number 4084073770 is an original bushing produced by Hitachi Construction Machinery, specifically designed for the support chain (link rail) system of tracked excavators or bulldozers, serving as a wear-resistant bushing connecting the pin shaft and link plate. Therefore, it is mainly suitable for Hitachi ZX series (such as ZX200, ZX330, etc.) track type equipment.

This product is an open type wear-resistant liner with a C-shaped opening and a circular ring shape. It is made of high-strength alloy steel and has undergone precision processing and rust prevention treatment (such as galvanizing or phosphating) on the surface, presenting a silver gray metallic luster as shown in the picture. Its inner diameter, outer diameter, width, and opening size are all precision manufactured according to the matching requirements of the supporting chain pin shaft and the chain link plate hole. The opening design gives it a certain degree of elasticity, making it easy to install and disassemble, and can form a good fit with the pin shaft after being compressed. As an original component, its hardness, wear resistance, and dimensional accuracy are strictly guaranteed, optimized to withstand high-frequency impacts, friction, and heavy loads at the joint of the chain links during track walking.

Installation specifications: 1 Cleaning and inspection: Before installation, the pin holes and new bushings on the chain link plate must be thoroughly cleaned, and the inner and outer surfaces of the bushings should be checked for burrs and cracks. 2. Lubrication installation: Apply sufficient lithium based grease with extreme pressure resistance to the inner hole of the liner and the surface of the pin shaft. Use a specialized tool or copper rod to smoothly knock the bushing into the hole of the chain link plate, ensuring that it is installed in place and the opening direction is correct (usually facing the side that is less susceptible to direct impact). 3. Assembly of pin shaft: Thread the pin shaft through the bushing and install locking components (such as spring pins) to prevent movement.