... SGS Certificate Good reputation Material : 50Mn , 42CrMo Excavator Slewing Rings Bearing Volvo: EC210, EC210B, EC330B, EC360B, EC460BDeere: 160C, 200C, ... -5, EX220-1, EX220-3, EX220-5, EX230-5, EX270-1, EX270-5, ZX230, ZX270EX300-2, EX300-3, EX310, EX300-5, EX330-5, EX370-5, ... ZX330, ZX370, EX400-1, EX400-3, EX400-5, EX450-5, ZX450Kobelco: SK100-III, SK100 ...