武汉恒斯源液压机电设备有限公司
 
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该泵轴端密封设计为两种形式，种是机械密封，另种是填料密封，可根据具体使用情况和用户要求确定。 外啮合泵主要由主、从动齿轮，驱动轴，泵体侧板等主要零件构成。泵体内相互啮合的主、从动齿轮与两端盖泵体起构成密封工作容积，齿轮的啮合点将两腔隔开，形成了吸、压油腔，吸油腔内的轮齿脱离啮合，密封工作腔容积不断增大，形成部分真空，油液在大气压力作用下从油箱经吸油管进入吸油腔，并被旋转的轮齿带入压油腔。。

新闻：R902058120 A4VG90EP2DM1/32L-NZF02F021DH ：http://www.jdzj.com/jdzjnews/k3_10816061.html