力士乐Rexroth二级伺服阀
德国Rexroth伺服阀结构比较复杂，造价高，对油的质量和清洁度要求高。新型的伺服阀正试图克服这些缺点，例如利用电致伸缩元件的伺服阀，使结构大为简化。另一个方向是研制特殊的工作油（如电气粘性油）。这种工作油能在电磁的作用下改变粘性系数。利用这一性质就可通过电信号直接控制油流。
力士乐三位四通二级伺服阀，力士乐4WS2EM 10...XH型伺服阀属于两级阀，*级为喷嘴档板式，由控制信号控制其出口压力，第二级为滑阀式，执行控制级至刹车缸的压力。当无信号作用时， 由於压力喷嘴出口油压力的作用，使Rexroth伺服阀挡板靠在回油喷嘴上，此时压力口的油压作用在滑阀阀芯上，使刹车口同计量油口直接连通，刹车口压力同飞行员控制的计量油压相等，当机轮角速度检测到滑行速度同基准滑行速度有偏差时，力矩马达接收到偏差电信号，此时力矩马达驱动档板向压力喷嘴偏转，使作用在阀芯上端油压下降，在阀芯下端油压作用下，阀芯上移，关小计量压力油口，这将导致控制口压力降低，控制口压力降低到某一值时，就有对应的制动压力。
力士乐4WS2EM 10...XH型三位四通二级伺服阀的全系列订货型号如下，如果想找您要的型号，请Ctrl+F寻找。
4WS2EM10-5X/5B11XH-210K31EV、4WS2EM10-5X/5B11XH-210K31DV、4WS2EM10-5X/5B11XH-210K31CV、4WS2EM10-5X/5B11XH-315K31EV、4WS2EM10-5X/5B11XH-315K31DV、4WS2EM10-5X/5B11XH-315K31CV、4WS2EM10-5X/5B11XHE210K31EV、4WS2EM10-5X/5B11XHE210K31DV、4WS2EM10-5X/5B11XHE210K31CV、4WS2EM10-5X/5B11XHE315K31EV、4WS2EM10-5X/5B11XHE315K31DV、4WS2EM10-5X/5B11XHE315K31CV、4WS2EM10-5X/5B11XHT210K31EV、4WS2EM10-5X/5B11XHT210K31DV、4WS2EM10-5X/5B11XHT210K31CV、4WS2EM10-5X/5B11XHT315K31EV、4WS2EM10-5X/5B11XHT315K31DV、4WS2EM10-5X/5B11XHT315K31CV、4WS2EM10-5X/5B11XHET210K31EV、4WS2EM10-5X/5B11XHET210K31DV、4WS2EM10-5X/5B11XHET210K31CV、4WS2EM10-5X/5B11XHET315K31EV、4WS2EM10-5X/5B11XHET315K31DV、4WS2EM10-5X/5B11XHET315K31CV、4WS2EM10-5X/10B11XH-210K31EV、4WS2EM10-5X/10B11XH-210K31DV、4WS2EM10-5X/10B11XH-210K31CV、4WS2EM10-5X/10B11XH-315K31EV、4WS2EM10-5X/10B11XH-315K31DV、4WS2EM10-5X/10B11XH-315K31CV、4WS2EM10-5X/10B11XHE210K31EV、4WS2EM10-5X/10B11XHE210K31DV、4WS2EM10-5X/10B11XHE210K31CV、4WS2EM10-5X/10B11XHE315K31EV、4WS2EM10-5X/10B11XHE315K31DV、4WS2EM10-5X/10B11XHE315K31CV、4WS2EM10-5X/10B11XHT210K31EV、4WS2EM10-5X/10B11XHT210K31DV、4WS2EM10-5X/10B11XHT210K31CV、4WS2EM10-5X/10B11XHT315K31EV、4WS2EM10-5X/10B11XHT315K31DV、4WS2EM10-5X/10B11XHT315K31CV、4WS2EM10-5X/10B11XHET210K31EV、4WS2EM10-5X/10B11XHET210K31DV、4WS2EM10-5X/10B11XHET210K31CV、4WS2EM10-5X/10B11XHET315K31EV、4WS2EM10-5X/10B11XHET315K31DV、4WS2EM10-5X/10B11XHET315K31CV、4WS2EM10-5X/20B11XH-210K31EV、4WS2EM10-5X/20B11XH-210K31DV、4WS2EM10-5X/20B11XH-315K31CV、4WS2EM10-5X/20B11XH-315K31EV、4WS2EM10-5X/20B11XH-315K31DV、4WS2EM10-5X/20B11XH-210K31CV、4WS2EM10-5X/20B11XHE210K31EV、4WS2EM10-5X/20B11XHE210K31DV、4WS2EM10-5X/20B11XHE315K31EV、4WS2EM10-5X/20B11XHE210K31CV、4WS2EM10-5X/20B11XHE315K31CV、4WS2EM10-5X/20B11XHE315K31DV、4WS2EM10-5X/20B11XHT210K31EV、4WS2EM10-5X/20B11XHT210K31DV、4WS2EM10-5X/20B11XHT210K31CV、4WS2EM10-5X/20B11XHT315K31EV、4WS2EM10-5X/20B11XHT315K31DV、4WS2EM10-5X/20B11XHT315K31CV、4WS2EM10-5X/20B11XHET210K31EV、4WS2EM10-5X/20B11XHET210K31DV、4WS2EM10-5X/20B11XHET210K31CV、4WS2EM10-5X/20B11XHET315K31EV、4WS2EM10-5X/20B11XHET315K31DV、4WS2EM10-5X/20B11XHET315K31CV、4WS2EM10-5X/30B11XH-210K31EV、4WS2EM10-5X/30B11XH-210K31DV、4WS2EM10-5X/30B11XH-210K31CV、4WS2EM10-5X/30B11XH-315K31EV、4WS2EM10-5X/30B11XH-315K31DV、4WS2EM10-5X/30B11XH-315K31CV、4WS2EM10-5X/30B11XHE210K31EV、4WS2EM10-5X/30B11XHE210K31DV、4WS2EM10-5X/30B11XHE210K31CV、4WS2EM10-5X/30B11XHE315K31EV、4WS2EM10-5X/30B11XHE315K31DV、4WS2EM10-5X/30B11XHE315K31CV、4WS2EM10-5X/30B11XHT210K31EV、4WS2EM10-5X/30B11XHT210K31DV、4WS2EM10-5X/30B11XHT210K31CV、4WS2EM10-5X/30B11XHT315K31EV、4WS2EM10-5X/30B11XHT315K31DV、4WS2EM10-5X/30B11XHT315K31CV、4WS2EM10-5X/30B11XHET210K31EV、4WS2EM10-5X/30B11XHET210K31DV、4WS2EM10-5X/30B11XHET210K31CV、4WS2EM10-5X/30B11XHET315K31EV、4WS2EM10-5X/30B11XHET315K31DV、4WS2EM10-5X/30B11XHET315K31CV、4WS2EM10-5X/45B11XH-210K31EV、4WS2EM10-5X/45B11XH-210K31DV、4WS2EM10-5X/45B11XH-210K31CV、4WS2EM10-5X/45B11XH-315K31EV、4WS2EM10-5X/45B11XH-315K31DV、4WS2EM10-5X/45B11XH-315K31CV、4WS2EM10-5X/45B11XHE210K31EV、4WS2EM10-5X/45B11XHE210K31DV、4WS2EM10-5X/45B11XHE210K31CV、4WS2EM10-5X/45B11XHE315K31EV、4WS2EM10-5X/45B11XHE315K31DV、4WS2EM10-5X/45B11XHE315K31CV、4WS2EM10-5X/45B11XHT210K31EV、4WS2EM10-5X/45B11XHT210K31DV、4WS2EM10-5X/45B11XHT210K31CV、4WS2EM10-5X/45B11XHT315K31EV、4WS2EM10-5X/45B11XHT315K31DV、4WS2EM10-5X/45B11XHT315K31CV、4WS2EM10-5X/45B11XHET210K31EV、4WS2EM10-5X/45B11XHET210K31DV、4WS2EM10-5X/45B11XHET210K31CV、4WS2EM10-5X/45B11XHET315K31EV、4WS2EM10-5X/45B11XHET315K31DV、4WS2EM10-5X/45B11XHET315K31CV
Rexroth二级伺服阀：4WS2EM10-5X/60B11XH-210K31EV、4WS2EM10-5X/60B11XH-210K31DV、4WS2EM10-5X/60B11XH-210K31CV、4WS2EM10-5X/60B11XH-315K31EV、4WS2EM10-5X/60B11XH-315K31DV、4WS2EM10-5X/60B11XH-315K31CV、4WS2EM10-5X/60B11XHE210K31EV、4WS2EM10-5X/60B11XHE210K31DV、4WS2EM10-5X/60B11XHE210K31CV、4WS2EM10-5X/60B11XHE315K31EV、4WS2EM10-5X/60B11XHE315K31DV、4WS2EM10-5X/60B11XHE315K31CV、4WS2EM10-5X/60B11XHT210K31EV、4WS2EM10-5X/60B11XHT210K31DV、4WS2EM10-5X/60B11XHT210K31CV、4WS2EM10-5X/60B11XHT315K31EV、4WS2EM10-5X/60B11XHT315K31DV、4WS2EM10-5X/60B11XHT315K31CV、4WS2EM10-5X/60B11XHET210K31EV、4WS2EM10-5X/60B11XHET210K31DV、4WS2EM10-5X/60B11XHET210K31CV、4WS2EM10-5X/60B11XHET315K31EV、4WS2EM10-5X/60B11XHET315K31DV、4WS2EM10-5X/60B11XHET315K31CV、4WS2EM10-5X/75B11XH-210K31EV、4WS2EM10-5X/75B11XH-210K31DV、4WS2EM10-5X/75B11XH-210K31CV、4WS2EM10-5X/75B11XH-315K31EV、4WS2EM10-5X/75B11XH-315K31DV、4WS2EM10-5X/75B11XH-315K31CV、4WS2EM10-5X/75B11XHE210K31EV、4WS2EM10-5X/75B11XHE210K31DV、4WS2EM10-5X/75B11XHE210K31CV、4WS2EM10-5X/75B11XHE315K31EV、4WS2EM10-5X/75B11XHE315K31DV、4WS2EM10-5X/75B11XHE315K31CV、4WS2EM10-5X/75B11XHT210K31EV、4WS2EM10-5X/75B11XHT210K31DV、4WS2EM10-5X/75B11XHT210K31CV、4WS2EM10-5X/75B11XHT315K31EV、4WS2EM10-5X/75B11XHT315K31DV、4WS2EM10-5X/75B11XHT315K31CV、4WS2EM10-5X/75B11XHET210K31EV、4WS2EM10-5X/75B11XHET210K31DV、4WS2EM10-5X/75B11XHET210K31CV、4WS2EM10-5X/75B11XHET315K31EV、4WS2EM10-5X/75B11XHET315K31DV、4WS2EM10-5X/75B11XHET315K31CV、4WS2EM10-5X/90B11XH-210K31EV、4WS2EM10-5X/90B11XH-210K31DV、4WS2EM10-5X/90B11XH-210K31CV、4WS2EM10-5X/90B11XH-315K31EV、4WS2EM10-5X/90B11XH-315K31DV、4WS2EM10-5X/90B11XH-315K31CV、4WS2EM10-5X/90B11XHE210K31EV、4WS2EM10-5X/90B11XHE210K31DV、4WS2EM10-5X/90B11XHE210K31CV、4WS2EM10-5X/90B11XHE315K31EV、4WS2EM10-5X/90B11XHE315K31DV、4WS2EM10-5X/90B11XHE315K31CV、4WS2EM10-5X/90B11XHT210K31EV、4WS2EM10-5X/90B11XHT210K31DV、4WS2EM10-5X/90B11XHT210K31CV、4WS2EM10-5X/90B11XHT315K31EV、4WS2EM10-5X/90B11XHT315K31DV、4WS2EM10-5X/90B11XHT315K31CV、4WS2EM10-5X/90B11XHET210K31EV、4WS2EM10-5X/90B11XHET210K31DV、4WS2EM10-5X/90B11XHET210K31CV、4WS2EM10-5X/90B11XHET315K31EV、4WS2EM10-5X/90B11XHET315K31DV、4WS2EM10-5X/90B11XHET315K31CV
力士乐4WS2EM...XH型4通伺服阀的zui大工作压力315 bar；zui大流量180 l/min。应用根据防爆指示94/9/EC；适用于美国FM许可"VH1"；环境温度范围–20 °C至60 °C
