The jacking oil pump is used for forced lubrication before turning the steam turbine. The rotor of the large unit is heavier, and the required power of the cranking motor is larger. Using the jacking oil pump, the rotor can be jacked up by 0.03 to 0.05mm before the turning of the unit, which reduces the car motor power. The lubricating oil of the oil cooler of the jacking shaft oil pump has ...