柱塞泵一般分为单柱塞泵、卧式柱塞泵、轴向柱塞泵和径向柱塞泵。单柱塞泵结构组成主要有偏心轮、柱塞、弹簧、缸体、两个单向阀。柱塞与缸体孔之间形成密闭容积。偏心轮旋转一转，柱塞上下往复运动一次，向下运动吸油，向上运动排油。泵每转一转排出的油液体积称为排量，排量只与泵的结构参数有关。卧式柱塞泵卧式柱塞泵是由几个柱塞（一般为3个或6个）并列安装，用1根曲轴通过连杆滑块或由偏心轴直接推动柱塞做往复运动，实现吸、排液体的液压泵。它们也都采用阀式配流装置，而且大多为定量泵。煤矿液压支架系统中的乳化液泵一般都是卧式柱塞泵。R918C02310AZPF-22-022RHO30KB***BOSCHREXROTH齿轮泵0510系列REXROTH力士乐齿轮泵采用修正渐开线齿形，用活动月牙板将高、低压腔分开，并在径向形成压力补偿，使得内外齿齿顶与月牙板之间形成几无间隙的密封，轴向动补偿盘则保证轴向间隙的良好密封，使得该泵的内泄漏减至***低。低压12Mpa、中压21Mpa、高压33Mpa。9510390066AZ-P-N-12-036-RQC12MA9510390067AZ-P-N-12-020-LQC12MA9510390068AZ-P-N-12-022-LQC12MA9510390069AZ-P-N-12-025-LQC12MA9510390070AZ-P-N-12-028-LQC12MA9510390071AZ-P-N-12-032-LQC12MA9510390072AZ-P-N-12-036-LQC12MA9510390073AZ-P-N-12-020-RQR12MB9510390074AZ-P-N-12-022-RQR12MB9510390075AZ-P-N-12-025-RQR12MB9510390076AZ-P-N-12-028-RQR12MB9510390077AZ-P-N-12-032-RQR12MB9510390078AZ-P-N-12-036-RQR12MB9510390079AZ-P-N-12-020-LQR12MB9510390080AZ-P-N-12-022-LQR12MB9510390081AZ-P-N-12-025-LQR12MB9510390082AZ-P-N-12-028-LQR12MB9510390083AZ-P-N-12-032-LQR12MB9510390084AZ-P-N-12-036-LQR12MB9510390085AZ-P-NFF-11-020/019/019-RDC12MB-S0014)