... label offered Material : 50Mn , 42CrMo Focus on Customers Excavator part slewing ring Kato , Komatsu , Hitachi Excavator part slewing ringCaterpillar : CAT320B CAT320C CATE200B CAT320 SH120A1/A2 ... -3,ZX230,ZX240,EX300-1,EX3003,EX220-1,UH083,UH063,Komatsu : PC60-6,PC60-7, PC100-5,PC120-5,PC130-5 ... -7,DH220-5,DH320,DH10L,DH300-5,DH280,DH290 Kato , Komatsu , Hitachi Excavator part slewing ring