E120B E312 E313 E315 Track Roller for Caterpillar Excavators

Factory Price E120B/E312/313/315 Lug-Pattern Excavator Track Roller Bottom Roller for 12-Ton and 31-Ton Caterpillar Excavators.

The E120B/E312/313/315 Track Roller is a precision-engineered bottom roller designed for excavators in demanding projects. This component ensures durability, excellent load-bearing capacity, and smooth operation in compact construction machinery.

The E120B Track Roller is a critical wear part in the undercarriage system of Komatsu E120B series excavators. It plays a key role in maintaining track alignment, reducing friction between the track chain and other undercarriage components, and supporting the excavator's weight during tasks like digging, pushing, and traversing rough terrain. Proper maintenance of the track roller is essential to minimize downtime and extend the lifespan of the undercarriage.

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