The housing, front and back cover are made of cast-iron, with high hardness, strong bearing capacity,firm structure and uneasy to deform. This product adopts external centrifugal switch design to increase the height of stator and rotor inside the motor, which results the high starting power and stable operation performance of motor. YC/YCL electric motor is widely used for single-phase heavy-loading starting equipment such as crusher, crane, cement mixer and etc.