液控伺服阀主要是指电液伺服阀,它在接受电气模拟信号后，相应输出调制的流量和压力。它既是电液转换元件，也是功率放大元件，它能够将小功率的微弱电气输入信号转换为大功率的液压能（流量和压力）输出。在电液伺服系统中，它将电气部分与液压部分连接起来，实现电液信号的转换与液压放大。电液伺服阀是电液伺服系统控制的核心。

液控伺服阀是在伺服系统中将电信号输入转换为功率非常大的压力或流量压力信号输出的执行元件。它是一种电液转换和功率放大元件。伺服阀的灵敏度高，快速性好，能将很小的电信号（例如10毫安）转换成很大的液压功率（如几十匹马力以上），可以驱动多种类型的负载。过去人们曾把喷嘴档板阀、射流管或滑阀伺服马达等液压放大装置都列入伺服阀范围内。20世纪70年代以来，伺服阀一般仅指电液伺服阀。

典型的伺服阀由永磁力矩马达、喷嘴、档板、阀芯、阀套和控制腔组成(见图)。当输入线圈通入电流型号 4WRDE 

高频响方向阀，先导式，带电位反馈

规格10至32 

安装面按ISO 4401 

控制流量的方向和大小 

适合对动力、位置、速度和压力进行闭环控制 

通过一个2级伺服阀进行先导控制 

通过感应位置监测器对主阀芯进行位置感应 

集成电控器（OBE）

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力士乐比例阀4WRKE10E100L-3X/6EG24K31/A1D3M电液比例阀简称比例阀。普通液压阀只能通过预调的方式对液流的压力、流量进行定值控制。但是当设备机构在工作过程中要求对液压系统的压力、流量参数进行调节或连续控制，例如.要求工作台在工作进给时按慢、快、慢连续变化的速度实现进给，或按一定精度模拟某个较佳控制曲线实现旅力控制.普通液压阀则实现不了。这时可以用电液比例阀对液压系统进行控制。
电液比例阀是一种按输入的电信号连续地、按比例地控制液压系统的液流方向、流量和压力的阀类。它山电-机械比例转换装置和液压控制阀本体两大部分构成.前者将输入的电信号连续地按比例地转换为机械力和位移输出，后者在接受这种机械力和位移之后、按比例连续地输出压力和流量.
电液比例阀的发展主要有两个途径一是用比例电磁铁取代传统液压阀的手动调节装置或取代普通电磁铁发展起来的;二是由电液伺服阀简化结构、降低精度发展起来的。下面介绍的比例阀均指前者，它是当今比例阀的主流。与普通液压阀可以互换。
比例电磁阀的结构如图5-27所示。比例电磁铁是直流电磁铁，但它与普通直流电磁铁不同。普通直流电磁铁的衔铁只有吸合和断开两个工作位置，并且在吸合时磁路中几乎没有气隙.而比例电磁铁要求吸合力或位移与给定电流成比例。并在衔铁的全部工作行程上，磁路中保持一定的气隙‘.其结构主要由较靴1、线圈2、壳体5和衔铁10等组成。线圈2中通电后产生磁场，因隔磁环4的存在。使磁力线主要部分通过衔铁10、气隙和较靴1，形成回路口较靴对衔铁产生吸力门在线圈中电流一定时。吸力的大小因较靴1与衔铁间的距离不同而变化。但衔铁在气隙适中的一段行程中，吸力随位置的改变发生的变化很小。
设计中就使比例电磁铁的衔铁在这段行程中工作。因此。改变线圈中的电流，即可在衔铁上得到与其成正比的吸力。用比例电磁铁代替螺旋手柄来调整液压阀，就能使输出乐力或流量与输人电流对应成比例地发生变化。
比例阀用于模拟控制，是介于普通开关控制与伺服控制之间的控制方式，它也特别适合于
设备的革新或改造。使设备自动化控制水平大为提高。其在现代液雌系统中占比例很大口
与普通液压阀相比.比例阀的优点是:①能简单地实现远距离控制:②能连续地、按比例地控制液压系统的压力和流量。从而实现对执行机构的位置、速度和力的连续控制，并能防止或减小压力、速度变换时的冲击;③油路简化，元件数量少。
比例阀适用于既要求能连续控制胀力、流量.和方向.而又不需要很I的控制精度的场合。
比例阀也分为压力阀、流量阀和方向阀几大类。近来又出现了功能复合化的趋势。

插装阀LR25F03E1X/
插装阀LR25F10E1X/
插装阀LR25F40E1X/B40
插装阀LR32DB40E1X/
插装阀LR32DR40D6X/-074
插装阀LR32F03E1X/
插装阀LR32F40E1X/
插装阀LR40DB40E1X/
插装阀LR40F10K1X/
电磁球阀M-2SEW6P3X/420MG24N9K4
电磁球阀M-3SED10CK1X/350CG24N9K4
电磁球阀M-3SED10UK13/350CG24N9K4
电磁球阀M-3SED10UK1X/350CG24N9K4
电磁球阀M-3SED6CK13/350CG24N9K4
电磁球阀M-3SED6CK1X/350CG24N9K4
电磁球阀M-3SED6CK1X/350CG24N9K4/V
电磁球阀M-3SED6UK13/350CG24N9K4
电磁球阀M-3SED6UK13/350CG24N9K4/V
电磁球阀M-3SED6UK1X/350CG24N9K4
电磁球阀M-3SED6UK1X/350CG24N9K4/V
电磁球阀M-3SEW10UK1X/350CG24N9K4
电磁球阀M-3SEW6C36/420MG24N9K4
电磁球阀M3SEW6C3X/420MG24N9K4
电磁球阀M-3SEW6C3X/420MG24N9K4
电磁球阀M-3SEW6U36/420MG24N9K4
电磁球阀M-3SEW6U3X/420MG24N9K4
单向阀MG10G1X/V
单向阀MG8G1X/V
单向阀MK10G1X/V
单向阀M-SR10KE00-1X/
单向阀M-SR10KE02-1X/
单向阀M-SR10KE05-1X/
单向阀M-SR10KE05-1X/V
单向阀M-SR15KE02-1X/
单向阀M-SR15KE05-1X/
单向阀M-SR20KE05-1X
单向阀M-SR20KE05-1X/
单向阀M-SR20KE15-1X/
单向阀M-SR20KE50-1X/
单向阀MSR25KE05-1X
单向阀M-SR25KE05-1X
单向阀M-SR25KE05-1X/
单向阀M-SR25KE15-1X/
单向阀M-SR30KE02-1X/
单向阀MSR30KE05-1X
单向阀M-SR30KE05-1X/
单向阀M-SR8KE02-1X/
单向阀M-SR8KE05-1X/
OD.02.07.01-30-0C-02
OD.02.17-01-30-OC
OD.13.10.77-70-00
OD.14.40.78-70-00
OD.15.04.18-1A-S0
OD.15.04.89-1A-S0
OD.15.05.36-3A-S0
OD.15.06.18-1B-S0
OD.15.31.18-3A-S0
OD.15.31.36-3A-S0
OD.15.32.18-1A-S0
OD.15.32.36-1A-S0
OD.15.32.89-1A-S0
OD.21.01.03.56
OD.75.31.18-34-00
OD.75.32.18-14-00
OT.M1.03.03-99-10
OT.M1.04.03-99-10
OT.M1.04.03-99-35
OT.U3.01.00-09-00
齿轮泵PGF1-2X/2.2RA01VP1
齿轮泵PGF1-2X/2.2RE01VU2
齿轮泵PGF1-2X/3.2AR01VP1
齿轮泵PGF1-2X/5.0RE01VU2
齿轮泵PGF2-2X/016RE01VE4
齿轮泵PGF2-2X/019RE01VE4
齿轮泵PGF3-3X/025RE07VE4
齿轮泵PGF3-3X/040RE07VE4
齿轮泵PGH3-2X/016RE07VU2
齿轮泵PGH4-2X/020RE11VU2
齿轮泵PGH4-2X/025RE11VU2
齿轮泵PGH4-2X/032RE11VU2
齿轮泵PGH4-2X/040RE11VU2
齿轮泵PGH4-2X/050RE11VU2
齿轮泵PGH4-3X/020RE11VU2
齿轮泵PGH4-3X/025RE11VU2
齿轮泵PGH4-3X/032RE11VU2
齿轮泵PGH4-3X/040RE11VU2
齿轮泵PGH4-3X/050RE11VU2
齿轮泵PGH5-3X/063RE11VU2
齿轮泵PGH5-3X/080RE11VU2
齿轮泵PGH5-3X/100RE11VU2
齿轮泵PGH5-3X/125RE11VU2
齿轮泵PGH5-3X/160RE11VU2
叶片泵PV7-1X/10-14RE01MC0-16
叶片泵PV7-1X/10-20RE01MC0-08
叶片泵PV7-1X/10-20RE01MC0-10
叶片泵PV7-1X/16-20RE01MC0-16
叶片泵PV7-1X/16-30RE01MC0-08
叶片泵PV7-1X/25-45RE01MC0-08
叶片泵PV7-2X/20-25RA01MA0-05
叶片泵PVV1-1X/036RA15DMB
叶片泵PVV2-1X/068RA15RMB
叶片泵PVV2-1X/068RA15UMB
叶片泵PVV4-1X/082RA15DMC
叶片泵PVV4-1X/122RA15DMC
叶片泵PVV5-1X/193RA15DMC
叶片泵PVV54-1X/193-122RA15UUMC
R900020153
R900020154
R900051053
R900052392
R900052621
R900053460
R900061658
R900063029
R900086321
R900086685
R900094562
R900205506
R900214081
R900214082
R900244520
R900304376
R900334998
R900340979
R900344369
R900344549
R900344778
R900344919
R900345372
R900345743
R900346083
R900346859
R900347495
R900347496
R900347499
R900347500
R900347501
R900347504
R900347505
R900348453
R900348943
R900351634
R900356291
R900357438
R900358268
R900372794
R900400824
R900401212
R900405611
R900407394
R900407424
R900407434
R900409844
R900409889
R900409898
R900409933
R900409958
R900409959
R900409965
R900409967
R900410813
R900410815
R900410849
R900410876
R900410880
R900411318
R900413204
R900417573
R900417590
R900418952
R900420245
R900420511
R900420519
R900420520
R900420524
R900420525
R900420531
R900420537
R900421985
R900422885
R900422886
R900423261
R900423724
R900423725
R900423726
R900423728
R900423730
R900424148
R900424149
R900424150
R900424152
R900424155
R900424157
R900424158
R900424175
R900424266
R900424269
R900424271
R900424277
R900424348
JPR-213
JPR-213 16
JPR-213/2
JPR-214
JPR-214 16
JPR-312
JPR-312 16
JPR-312/2
JPR-313
JPR-313 16
JPR-314
KC-011
KC-011/30
KC-011/30 14
KC-011/30/M
KE-1718-X 24DC
KG-031/100
KG-031/100 20
KG-031/100/20
KG-031/100/V
KG-031/100/V 20
KG-031/210
KG-031/210 20
KG-031/210/20
KG-031/210/21
KG-031/210/V
KG-031/210/V 20
KG-031/210L1
KG-033/100
KG-033/100 20
KG-033/100/V
KG-033/210
KG-033/210 20
KG-033/210/V
KG-034/100
KG-034/100 20
KG-034/100/V
KG-034/210
KG-034/210 20
KG-034/210/V
KIT-E-SW-BC
KIT-E-SW-BP
KIT-E-SW-PS
KIT-E-SW-PS-TERS
KM-011/100
KM-011/100/V
KM-011/110V
KM-011/210
KM-011/210/V
KM-011/210/V 50 /WG
KM-011/350
KM-011/350 50
KM-011/350/50
KM-011/350/V
KM-012/100
KM-012/100/350/V
KM-012/100/V
KM-012/100/V 50
KM-012/210
KM-012/210 50
KM-012/210/100
KM012/210/V
KM-012/210/V
KM-012/210-50/DE
KM-012/350
KM-012/350/100
KM-012/350/100/V
KM-012/350/210
KM-012/350/50
KM-012/350/V
KM-012/350/VF
KM-013/100
KM-013/100 50
KM-013/100/V
KM-013/210
KM-013/210 50
KM-013/210/V
KM-013/350
KM-013/350 50
KM-013/350/V
KM-013/350V/50
KM-013-210
KM-014/100
KM-014/100 50
KM-014/100/V
KM-014/210
KM-014/210 50
KM-014/210/V
KM-014/210/V 50
KM-014/350
KM-014/350 50
KM-014/350/30
KM-014/350/V
KM-015
KM-015/100
KM-015/100/V
KM-015/210
KM-015/210 50
KM-015/210/V
KM-015/350
KM-015/350/V
KQ-012
KQ-012 53
KQ-012/53
KQ-012/G
KQ-0-12/G
KQ-012/G 54