Factory Price EX55 Lug-Pattern Excavator Track Roller Bottom Roller for 5.5-Ton Hitachi EX55-Series

The EX55 Track Roller 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 ​​EX55 track roller​​ is a critical undercarriage component designed for ​​Hitachi EX55 series excavators​​ (including mini excavator variants like the Hitachi EX55). It belongs to the "carrier roller" or "bottom roller" category, which supports the excavator’s weight and ensures smooth movement of the tracks.

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