20V2A 叶片泵
20V2A-1A22R
20V2A-1B22R
20V2A-1C22R
20V2A-1D22R
20V3A
20V3A-1A22R
20V3A-1B22R
20V3A-1C22R
20V3A-1D22R
20V4A
20V4A-1A22R
20V4A-1B22R
20V4A-1C22R
20V4A-1D22R
20V5A
20V5A-1A22R
20V5A-1B22R
20V5A-1C22R
20V5A-1D22R
20V6A
20V6A-1A22R
20V6A-1B22R
20V6A-1C22R
20V6A-1D22R
20V7A
20V7A-1A22R
20V7A-1B22R
20V7A-1C22R
20V7A-1D22R
20V8A
20V8A-1A22R
20V8A-1B22R
20V8A-1C22R
20V8A-1D22R
20V9A
20V9A-1A22R
20V9A-1B22R
20V9A-1C22R
20V9A-1D22R
20V10A
20V10A-1A22R
20V10A-1B22R
20V10A-1C22R
20V10A-1D22R
20V11A
20V11A-1A22R
20V11A-1B22R
20V11A-1C22R
20V11A-1D22R
20V12A
20V12A-1A22R
20V12A-1B22R
20V12A-1C22R
20V12A-1D22R
20V14A
20V14A-1A22R
20V14A-1B22R
20V14A-1C22R
20V14A-1D22R
25V10A
25V10A-1A22R
25V10A-1B22R
25V10A-1C22R
25V10A-1D22R
25V12A
25V12A-1A22R
25V12A-1B22R
25V12A-1C22R
25V12A-1D22R
25V14A
25V14A-1A22R
25V14A-1B22R
25V14A-1C22R
25V14A-1D22R
25V15A
25V15A-1A22R
25V15A-1B22R
25V15A-1C22R
25V15A-1D22R
25V17A
25V17A-1A22R
25V17A-1B22R
25V17A-1C22R
25V17A-1D22R
25V19A
25V19A-1A22R
25V19A-1B22R
25V19A-1C22R
25V19A-1D22R
25V21A
25V21A-1A22R
25V21A-1B22R
25V21A-1C22R
25V21A-1D22R
35V21A
35V21A-1A22R
35V21A-1B22R
35V21A-1C22R
35V21A-1D22R
35V25A
35V25A-1A22R
35V25A-1B22R
35V25A-1C22R
35V25A-1D22R
35V30A
35V30A-1A22R
35V30A-1B22R
35V30A-1C22R
35V30A-1D22R
35V32A
35V32A-1A22R
35V32A-1B22R
35V32A-1C22R
35V32A-1D22R
35V35A
35V35A-1A22R
35V35A-1B22R
35V35A-1C22R
35V35A-1D22R
35V38A
35V38A-1A22R
35V38A-1B22R
35V38A-1C22R
35V38A-1D22R
45V42A
45V42A-1A22R
45V42A-1B22R
45V42A-1C22R
45V42A-1D22R
45V45A
45V45A-1A22R
45V45A-1B22R
45V45A-1C22R
45V45A-1D22R
45V50A
45V50A-1A22R
45V50A-1B22R
45V50A-1C22R
45V50A-1D22R
45V57A
45V57A-1A22R
45V57A-1B22R
45V57A-1C22R
45V57A-1D22R
45V60A
45V60A-1A22R
45V60A-1B22R
45V60A-1C22R
45V60A-1D22R
45V66A
45V66A-1A22R
45V66A-1B22R
45V66A-1C22R
45V66A-1D22R
45V76A
45V76A-1A22R
45V76A-1B22R
45V76A-1C22R
45V76A-1D22R
2520V双联
3525V双联
20V2A-86A22R
20V2A-86B22R
20V2A-86C22R
20V2A-86D22R
4535V双联
20V3A-86A22R
20V3A-86B22R
20V3A-86C22R
20V3A-86D22R
20V4A-86A22R
20V4A-86B22R
20V4A-86C22R
20V4A-86D22R
20V5A-86A22R
20V5A-86B22R
20V5A-86C22R
20V5A-86D22R
20V6A-86A22R
20V6A-86B22R
20V6A-86C22R
20V6A-86D22R
20V7A-86A22R
20V7A-86B22R
20V7A-86C22R
20V7A-86D22R
20V8A-86A22R
20V8A-86B22R
20V8A-86C22R
20V8A-86D22R
20V9A-86A22R
20V9A-86B22R
20V9A-86C22R
20V9A-86D22R
20V10A-86A22R
20V10A-86B22R
20V10A-86C22R
20V10A-86D22R
20V11A-86A22R
20V11A-86B22R
20V11A-86C22R
20V11A-86D22R
20V12A-86A22R
20V12A-86B22R
20V12A-86C22R
20V12A-86D22R
20V14A-86A22R
20V14A-86B22R
20V14A-86C22R
20V14A-86D22R
25V10A-86A22R
25V10A-86B22R
25V10A-86C22R
25V10A-86D22R
25V12A-86A22R
25V12A-86B22R
25V12A-86C22R
25V12A-86D22R
25V14A-86A22R
25V14A-86B22R
25V14A-86C22R
25V14A-86D22R
25V15A-86A22R
25V15A-86B22R
25V15A-86C22R
25V15A-86D22R
25V17A-86A22R
25V17A-86B22R
25V17A-86C22R
25V17A-86D22R
25V19A-86A22R
25V19A-86B22R
25V19A-86C22R
25V19A-86D22R
25V21A-86A22R
25V21A-86B22R
25V21A-86C22R
25V21A-86D22R
35V21A-86A22R
35V21A-86B22R
35V21A-86C22R
35V21A-86D22R
35V25A-86A22R
35V25A-86B22R
35V25A-86C22R
35V25A-86D22R
35V30A-86A22R
35V30A-86B22R
35V30A-86C22R
35V30A-86D22R
35V32A-86A22R
35V32A-86B22R
35V32A-86C22R
35V32A-86D22R
35V35A-86A22R
35V35A-86B22R
35V35A-86C22R
35V35A-86D22R
35V38A-86A22R
35V38A-86B22R
35V38A-86C22R
35V38A-86D22R
45V42A-86A22R
45V42A-86B22R
45V42A-86C22R
45V42A-86D22R
45V45A-86A22R
45V45A-86B22R
45V45A-86C22R
45V45A-86D22R
45V50A-86A22R
45V50A-86B22R
45V50A-86C22R
45V50A-86D22R
45V57A-86A22R
45V57A-86B22R
45V57A-86C22R
45V57A-86D22R
45V60A-86A22R
45V60A-86B22R
45V60A-86C22R
45V60A-86D22R
45V66A-86A22R
45V66A-86B22R
45V66A-86C22R
45V66A-86D22R
45V76A-86A22R
45V76A-86B22R
45V76A-86C22R
45V76A-86D22R
保压、卸荷以负载相匹配，压力控制回路是利用 各种压力控制阀才能既满足工作要求又减少及多级压力控制等回路来实现，以满足刘控制系统压力的回路。液压系统中的压力必须与系统功率损失，这就需要通过调压(定压)，减压、增压，支压系统中各执行元件在力或转矩上对压力
8.3.1调压回路
调压回路的作用是用来调节或限定整个液压系统或系统局部的油液压力，或者更执行元件在一个工作循环中的各个不同工况具有不同的工作压力，以满足不同工况下因负载大小不同对工作压力大小不同的需求。调压回路 又称限压回路。
(1)调压回路
①压力设定回路如图8-29 所示，根据系统最大负载由溢流阀2设定(调节)压力大小，当负载压力小于益流河的设定压力时，溢流阀是关闭的:当负载压力大于阀2的调定压力时，液压泵1输出的油液此时从打开的益流阀溢往油箱部分油液，维持液压系统的压力不超出溢流阀所设定的压力，从而限定了液压系统的最大工作压力，起到溢流保护作用。图中的溢 流阀2如果使用比例溢流阀，可构成比例调压回路;如果阀2为先导式溢流阀，井在其遥空口接直动式远程调压阀，便构成远程调压回路。
②多级调压回路当液压执行元件 在工作循环中的各个阶段需要几种不同工作压力时，可采用图830所示的多级调压回路。图中，三位四通电磁阀3与先导式溢流阀的控制油口相接，当电磁阀铁1DT与2DT不通电时，系统压力由主溢流阀2调节(如20MPa);当1DT通电时，系统压力由直动势(式)溢流阀4调节(如15MPa);当2DT通电时，系统压力由直动式溢流阀5调节(如10MPa)。
③限压回路 在立式机床上，可采用图8-31所示的限压回路。当液压缸5 下行(IDT通电)时，先导式溢流阀2-着缸5下压时的最大工作压力(高压):液压缸5上行时，只需克服塞杆等的重力上抬溢流阀4-着上升时回路的压力(低压), 此时系统压力大小由阀4限定，阀2调的压力比阀4的高。
