In April 2015, the company successfully expanded the processing range of XXT-004ZX automatic bearing bush precision boring machine, the original processing range of bearing bush diameter 60-90, now small specifications of bearing bush diameter 40-60 can also be processed. In a boring machine the size specifications of the bush can be processed, users do not need to add additional equipment, just need to follow the instructions behind the small specifications Bush replacement parts can be replaced. Special parts are placed in special accessory boxes of machine tools.