德国力士乐伺服阀4ws2em10-5x/30b11et315k31ev原理
力士乐德国产伺服阀，直接德国原厂订货，提供报关单，质保一年。力士乐rexroth伺服阀本系列产品为我公司主打产品系列。
力士乐伺服阀，是电液转换元件同时也是功率放大原件。是电液伺服系统控制的核心。
伺服阀，主要由6部分组成，分别是：永磁力矩马达、喷嘴、档板、阀芯、阀套以及控制腔。而它的工作原理就是当连通电流的时候，挡板会向右移动，使得其右边的喷嘴节能作用变强，自然流量也会随之减少。与此同时左边喷嘴节流作用会减少，流量会随之增加。这时候阀芯它两端就会失去平衡，使得阀芯会向左移动。然后阀芯它的位移量跟马达的电流量是形成正比的，而在阀芯上面的液压力跟弹簧力是刚好平衡的。
力士乐伺服阀由永磁力矩马达、喷嘴、档板、阀芯、阀套和控制腔组成。当输入线圈通入电流时，档板向右移动，使右边喷嘴的节流作用加强，流量减少，右侧背压上升;同时使左边喷嘴节流作用减小，流量增加，左侧背压下降。阀芯两端的作用力失去平衡, 阀芯遂向左移动。高压油从流向，送到负载。负载回油通过流过回油口，进入油箱。阀芯的位移量与力矩马达的输入电流成正比，作用在阀芯上的液压力与弹簧力相平衡，因此在平衡状态下力矩马达的差动电流与阀芯的位移成正比。如果输入的电流反向，则流量也反向。
力士乐伺服阀主要用在电气液压伺服系统中作为执行元件(见液压伺服系统)。在伺服系统中，液压执行机构同电气及气动执行机构相比，具有快速性好、单位重量输出功率大、传动平稳、抗干扰能力强等特点。另一方面，在伺服系统中传递信号和校正特性时多用电气元件。因此，现代高性能的伺服系统也都采用电液方式，伺服阀就是这种系统的必需元件。
力士乐部分型号如下：
r900584270 4ws2em10-4x/10b3et315k8av-7
r900583336 4ws2em10-4x/20b2et315k8em
r900582609 4ws2em10-4x/30b2et315k0dm-60
r900576452 4wse3ee16-1x/300b9et315k9em
r900568584 4ws2em10a-4x/45b3et315k8em
r900567828 4wse3ee16-1x/300b9-315k9em
r900565557 4wse2ed16-2x/100b8t315k9em
r900560820 4ws2em10-4x/45b2et315k8ev
r900560353 4ws2eb10-4x/10b2et70k8am
r900534062 4ws2eb10-4x/60b2e70k8dm
r900526719 4ws2em10-4x/45b2et315k8em
r900524418 4ws2em10-4x/2b2et315k8dm
r900522193 4ws2em16-2x/150b12t210k8em
r900520413 4ws2em10-4x/10b3et315k8am
r900513964 4wse3ee16-1x/200b8-315k9em
r900510650 4ws2em10-4x/20b2t315k8dm
r900508857 4ws2em10-4x/45b2et315k8bm
r900506180 4wse3ee16-1x/200b8-315k9ev
r900505743 4ws2eb10-4x/10b2et140k8am
r900501001 4ws2em10-4x/10b2et315k8bm-52
r900472884 4ws2em10-4x/30b3et315k8am-10
r900472869 4ws2em10-4x/30b2et315k8am
r900472730 4ws2em10-4x/5b3et315k8dm
r900470068 4ws2em10-4x/45b3et315k8dm
r900448828 4ws2em10-4x/30b2et315k0dm-53
r900448827 4ws2em10-4x/10b2et315k0dm-53
r900444077 4ws2em10-4x/30b2et315k8dv
r900443028 4ws2em10-4x/10b2et315k8dv
r900441328 4ws2em10-4x/60b1et315k8am
r901136727 4wse2em6-2x/15b9et210k17ev
r901132770 4wse2em10-5x/90b9-315k31dv
r901127976 4ws2em10-5x/20b11t210k31dv
r901125423 4wse3ee16-1x/300b8-315k9dv-122
r901122489 4wse3ee25-2x/400b8-315k9dv-122
r901120159 4ws2em10-5x/20b11t315k31cv-102
r901119977 4ws2em10-5x/30b11et210k31dv
r901119296 4ws2em10-5x/10b11t210k31cv-102
r901119176 4ws2em10-5x/60b11et210k31av
r901119156 4ws2em10-5x/75b11xhet210k31ev-100
r901117716 4wse3ee25-2x/400b8-315k9dv
r901116633 4ws2em10-5x/5b11xhet315k31ev-100
r901114562 4wse2ed10-5x/10b9t315k31dv
r901114271 4ws2em10-5x/45b11t315k8cv-104
r901113388 4ws2em10-5x/30b11et315k8dv
r901112369 4wse3ee16-1x/300b9et315k9dm-127
r901111502 4wse3ee25-2x/500b8et210k9ev-129
r901111253 4wse3ee25-2x/300b9t210k9ev
r901110839 4wse3ee16-1x/300b8-315k9dv
r901108852 4ws2em10-5x/60b11xhe315k31ev
r901108851 4ws2em10-5x/75b11xhe315k31ev
r901107316 4wse3ee16-1x/200b8-315k9ev-118
r901105059 4wse2ed10-5x/30b13et315k31ev
r901103913 4wse2ee10-4x/60b8et315k9ev-73
r901103896 4wse2ed10-5x/45b13t210k31ev
r901103115 4wse2em6-2x/5b8et210k17ev
r901102082 4wse3ee25-2x/500b8et210k9ev
r901101919 4ws2em10-5x/20b11xhet315k31ev-100
r901101469 4ws2em10-5x/75b11t315k8cv-104
r901100588 4wse2ed10-5x/20b9t210k31ev
r901098531 4wse3ee16-1x/150b9-210k9ev-118
r901098304 4ws2em10-5x/10b11xhet315k31ev-100
r901098041 4ws2em10-5x/30b11et315k31av
r901097271 4ws2em10-4x/60b1t315k8ev
r901097114 4wse3ee32-4x/500b9-315k9dv
r901096801 betriebsanleitung4ws2em10-5x/xh-102eu
r901096782 betriebsanleitung 4ws2em10-5x/xh-100eu
r901096781 4ws2em10-5x/30b11vh1et315k31dv-114
r901096114 4ws2em10-5x/5b11et315k31dv
r901095313 4ws2em10-5x/20b11t315k31ev
r901095275 4wse3ee32-4x/700b9et315k9ev
r901091476 4ws2em6-2x/25b11et315k17ev
r901091443 4ws2em10-5x/10b11t315k8av
r901086626 4ws2em10-5x/90b11xhet315k31ev
r901083564 4wse2em6-2x/15b8et315k17ev
r901082071 4wse3ee25-2x/400b8t210k9ev
r901081620 4ws2ee10-4x/20b2t70k8dv
r901079357 4ws2em10-4x/45b2et315k8ev-10
r901078195 4ws2em10-4x/30b1et315k8dv
r901077583 4ws2em10-5x/20b11et210k8dv
r901075694 4ws2em10-5x/30b11t315k31av
r901072949 4wse3ee16-1x/300b8t315k9ev
r901070225 4ws2em10-5x/20b11t315k8ev