... Reliable operation Excellent after-sale service Yantai Jinpeng Mining Machinery CO., LTDAdd:No.11, Fuzhou Road, development District, Yantai, Shandong ProvinceTel ... ball mills, they can be classified into YR motor and JR motor. The structure difference between two types is the motor ... : to adopt YR motor when smaller than 80KW, to adopt JR motor when larger than 80KW.Main parameter of the Ball ...