D7G Front Idler Assy For Komatsu 7 Ton Excavators Wear Resisting

The D7G Idler Assy is a precision-engineered component designed for Komatsu 7-ton excavators, ensuring durability, excellent load-bearing capacity, and smooth operation in demanding construction environments.

The D7G Idler Assy (short for "idler assembly") is a critical wear part in the undercarriage system, playing a vital role in maintaining track alignment, reducing friction, and ensuring smooth operation. It works in conjunction with track rollers, sprockets, and carriers to support the excavator's weight and guide the track chain along its correct path—essential for stability and efficiency during digging, pushing, and traversing rough terrain.

• High-grade Material Selection: Components 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