ZAX55 Excavator Front Idler Assy for Hitachi 5.5-Ton Models

Factory Price ZAX55 Lug-Pattern Excavator Idler Assy Front Idler for 5.5-Ton Hitachi ZAX55-Series

The ZAX55 Idler Assy is Kubota's compact powerhouse component designed for excavators in demanding Australian projects. This precision-engineered bottom roller ensures durability, excellent load-bearing capacity, and smooth operation in compact construction machinery.

The ZAX55 Idler Assy (short for "idler assembly") is a critical wear component in the undercarriage system of Komatsu ZAX55 series excavators. It plays a central role in maintaining track alignment, reducing friction between the track and rollers/idlers, and ensuring smooth operation of the undercarriage. Regular inspection and replacement of the idler assembly are essential to prevent track slippage, uneven wear, and costly downtime--issues that can arise from worn or damaged idlers.

Our production involves rigorous quality-controlled processes:

• High-grade Material Selection: Components are crafted from premium materials for maximum durability
• Outer Race/Shell: High-carbon chromium bearing steel (SUJ2) for superior hardness and wear resistance
• Inner Roller/Spindle: Alloy steel (SCM440) engineered to withstand significant radial and axial loads
• Seals & Lubrication: Nitrile rubber (NBR) seals for oil resistance with lithium-based grease for long-term lubrication
• Quality Assurance: All materials undergo thorough inspection for chemical composition and mechanical properties using spectrometers and hardness testers