be used with the concrete vibrators, the pump. vibrator motor can be inserted using,Cylindrical ,Square,Claw coupling Values:Very ... (1.5HP)50HZ60HZ14.5kg330*170*2752850rpm3450rpmmotor coupling Type:Concrete vibrator motor typeCylindrical couplingSquare couplingDanapac couplingHayashi couplingHexagonal type electric motor(CCC,ISO9001)