Factory Price SK100 Lug-Pattern Excavator Top Roller Carrier Roller for 10-Ton Kobelco SK100-Series

The ​​SK100 top roller​​ is a critical wear component in the undercarriage of compact excavators, primarily designed for models like the ​​SK100​​ (and compatible with some JCB variants). It serves to support the track between the sprocket and idler, guide the track’s movement, and absorb impact from rough terrain—ensuring consistent machine stability and reducing premature wear on other undercarriage parts.

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