德国Rexroth力士乐液压泵吸油管路的气穴现象 排除方法：
（1）增加吸油管道直径，减少或避免吸油管路的弯曲，以降低吸油速度，减少管路阻力损失。
（2）适当地吸油过滤器，并且要经常检查清洗，避免堵塞。
（3）液压泵的吸入高度要尽量小。自吸性能差的液压泵应由低压辅助泵供油。。
（4）避免油粘度过高而产生吸油不足现象。
（5）使用正确的配管方法。
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