yg series motor is newly designed roller bed motor with high reliability basing on jg2 series motor and with the reference of rm series motor produced by abb company. it possesses the advantages of small measurement, light weight, good performance, strong reliability, and easy maintaining etc. the bearing grease auto-supplying equipment is added to this motor, this lubricant grease is suitable for using on high temperature places, which will strengthen the mechanical strength of the motor. it's synthesize index of technique and economic has reached the international advanced level, the total performance of this motor could compare with rm series motor of abb company.