Hitachi EX200-5 Excavator Top Roller OEM Replacement

The ​​EX200-5 Lug Pattern Excavator Top Roller​​ is a critical undercarriage component designed exclusively for the ​​Hitachi EX200-5 series excavator​​. It plays a vital role in guiding and tensioning the track system, ensuring smooth power transfer from the engine to the tracks and preventing slippage or misalignment. This top roller is engineered to withstand harsh excavation conditions (dirt, rocks, heavy loads) and is essential for maintaining the stability and efficiency of the machine.

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