美国威格士VICKERS柱塞泵2520V21A8-1DD22R 2520V21A11-1AA22R

直轴斜盘式柱塞泵分为压力供油型和自吸油型两种。压力供油型液压泵大都是采用有气压的油箱，靠气压供油的液压油箱，在每次启动机器之后，必须等液压油箱达到使用气压后，才能操作机械。如果液压油箱的气压不足时就启动机器，会对液压泵内的滑靴造成拉脱现象，会造成泵体内回程板与压板的非正常磨损。

美国威格士vickers柱塞泵

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