EX100 Excavator Top Roller Steel OEM

The EX100 Top 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 EX100 Top Roller is a key wear part in the undercarriage of EX100-series excavators, designed to support the machine's weight, guide the track chain along its correct path, and absorb shocks from uneven terrain. It works in conjunction with rollers, idlers, and sprockets to reduce friction, prevent track misalignment, and enhance the stability of the excavator during operations like digging, lifting, and traversing rough ground. Proper maintenance of the top 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