Factory Price SK35 Lug-Pattern Excavator Track Roller Bottom Roller for 3.5-Ton Kobelco SK35-Series

Track rollers are essential for supporting the weight of tracked machines (e.g., mini excavators, crawlers) and facilitating smooth track movement. They are typically mounted on the undercarriage frame, with the track chain running over them to distribute load and reduce friction. For models like the ​​Kobleco SK350​​ (a 35-ton hydraulic crawler excavator), track rollers are part of the "four-wheel-one-chain" system (alongside idlers, drive sprockets, and carrier rollers) that ensures stable operation in construction, landscaping, and light demolition tasks.

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