... 4.Warranty:6 months 5.Process:forging 1.Product:Mini Excavator lower roller PC20-3 2.Warrenty:6 ... roller is to convey the weight of an excavator to the groud.When an excavators is ... Guide,Bucket bushing,Bucket pin and so on excavator and bulldozer parts.5.Brand:Komatsu,Hitachi, ... rollerPC20-3PC20-7PC30-1PC30-7PC40-7PC40 DFPC50UUPC55PC60-1 SFPC60-1 DFPC60-5PC60-7PC75UUPC100-3PC100-5PC200-1PC200-5PC300- ...