Yanmar E0860190030 Bottom Track Roller

The Yanmar E0860190030 is a double flange bottom track roller designed for the undercarriage system of Yanmar C50R, C50R-1, and C50R-2 tracked carriers. It features an outside guide configuration to maintain track alignment under load. The roller shell is manufactured from forged 50Mn or 40SiMnTi alloy steel, providing high surface hardness and core toughness for extended wear resistance in abrasive terrain. The assembly includes sealed-for-life bearings and a floating seal group to prevent contaminant ingress and lubricant loss. This component serves as a direct replacement for the OEM roller assembly, restoring track tension and load distribution performance.