The role of excavator vanguard oil

by:HMB     2021-01-28
Leading oil belongs to control oil, low pressure, the pressure is usually about 4 mpa, most of the gear pump, give a joystick, main control valve, solenoid valve, accumulator, hydraulic pump control, etc. Small excavators pilot pressure oil by the pressure reducing valve installed on the main control valve of the pump. It gives small drivers in the main valve stem, such as walking, turning, movable arm promote decline, shovel bucket rod excavation unloading. The main control valve opening and closing.
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