EX100 Excavator Front Idler Assembly OEM Fit

The ​​EX100 Idler Assy​​ (short for "idler assembly") is a critical undercarriage component designed exclusively for the ​​EX100 series excavators​​ from Hitachi. It plays a vital role in guiding and tensioning the track system, ensuring smooth power transfer from the engine to the wheels and preventing slippage or misalignment. This assembly 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