... , suitable for Beam Pumping Units application with special high slip (5 to 13%),very high starting torque and very soft mechanical ... features,the equipment is able to be started easily .Motor speed can drop to protect the equipment from damaging when flucating ... MG13,Frame No:213T~449T4,Output Range:2~208HP.5,Synchronous Speed:1200RPM(6 Poles 60Hz),1000RPM(6 Poles 50Hz),900RPM(8 ...