NG51-4isSpecial induction motor for M7130,M7132 and other plane grinding machine. frequency:50HZ,60HZ output:4.5kw frequency:50HZ synchro speed:1500r/min Specification Power voltage frequency Synchro speed rated current Kw V HZ r/min A NG51-4 4.5 380 50 1500 9.69 YUL-4 5.5 380 50 1500 11.6 NG64-4 6.5 380 50 1500 13.7 Y160M-4 9 380 50 1500 17.8