... -440V 3phase,20HP 2,manufacturer 3,CE,SGS,ISO 4,Delievery time:1 week concrete floor grinder with vacuum concrete floor ... 1.New configuration of Q880 has IE 2 standard motor and Delta inverter.2.Equipped with two heavy-duty motors (20hp) ,frequency ... In addition,the motor can be dismantled separately.3.Equipped with automatic regulation,it is capable of different construction process requirements ...