Berco KM3542 Carrier Roller Assembly

The Berco KM3542 carrier roller (top roller / upper roller) is an undercarriage component designed for Komatsu hydraulic excavators in the 20-25 metric ton operating weight class. It provides upper track chain support and guidance to prevent track sag and maintain proper track alignment during operation. Manufactured to OEM specifications with sealed and lubricated bearings, hardened steel roller shell, and precision-machined shaft. The assembly includes roller shell, shaft, bearings, seals, and mounting hardware. Direct replacement for Komatsu OEM part numbers 22U-30-00020, 22U-30-00021, and 22U-30-00022. Compatible with Berco reference KM3542 and VPI reference VKM3532V. Application verified for Komatsu excavator models PC160LC-7, PC158USLC-2, PC200-7, PC200LC-7, PC210LC-7, PC220-7, PC220LC-7, PC228USLC-3, PC228US-3, PC240-7, and Komatsu mobile crusher BR380JG-1. Engineered for heavy-duty construction and mining environments with high resistance to abrasive wear and impact loading.