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力士樂(lè )Rexroth伺服閥4WS2EM10-5X/60B11ET210K31AV

REXROTH力士樂(lè )比例閥，伺服閥

比例方向閥 

直控式比例方向閥 4WRA, 4WRAE, 4WRAF, 4WRE, 4WREE, 4WREF, 4WREEM

先導式比例方向閥 4WRZ, 4WRZE, 4WRZF, 4WRKE

其他 直控式二位三通比例方向閥（插裝閥）

帶感應式位置開(kāi)關(guān)的比例方向閥

高頻響閥 

直控式 WV1, RV1-PL1, RV1-HRV1, RV1-P/Q1

先導式 4WRDE, WV2-HPP, RV2-PL2, RV2-PL2, RV2-HRV2, 3/2V

伺服閥 

二級伺服閥 4WS.2E

三級伺服閥 4WSE3EE

比例壓力控制閥 

直動(dòng)式 DBET, DBETE, DBEP, KBPS, PV1-DBV, PV1-DBV(Active Plug), PV1-DBV

先導式 (Z)DBE, (Z)DBEE, DBE(M), DBE(M)E, PV2-DBV

比例減壓閥 3DREP, 3DREPE, (Z)DRE, ZDRE, ZDREE, DRE(M), DRE(M)E, 3DRE(M), 3DRE(M)E, PV2-DRV-3W

比例流量控制閥 

直動(dòng)式 QV1-4/2WV

直動(dòng)式二通型 2FRE

先導式 QV1-3WSRV, FES(E), 2/2-CPV, 2WRC(E), 3WRC(E)

規格 4WS.2E. 

2級方向伺服閥，機械或電子反饋

規格6，10和16 

安裝面按DIN 24340 A型 

控制流量的方向和大小 

適合對動(dòng)力、位置、速度和壓力進(jìn)行閉環(huán)控制 

第一級為噴嘴/擋板放大器 

干扭矩馬達 

反饋元件和閥芯的無(wú)磨損連接 

通過(guò)感應位置檢測器對主閥芯進(jìn)行位置感應，帶電反饋（規格10） 

集成電控器（OBE），用于4WSE2E型 

型號 4WSE3EE 

3級方向伺服閥，帶電反饋

規格16至32 

安裝面按DIN 24340 A型 

控制流量的方向和大小 

適合對動(dòng)力、位置、速度和壓力進(jìn)行閉環(huán)控制 

高靈敏鍍，極低滯環(huán)和零點(diǎn)漂移 

通過(guò)感應位置檢測器校對主閥芯進(jìn)行位置感應 

集成電控器（OBE） 

4WS2EM10-5X/75B11ET315K31EV

4WS2EM10-90/75B2ET315CAM

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R901006867 4WS2EM10-5X/45B11ET210K8AV

R901006460 4WSE3EE16-1X/100B8-315K9EV-120

R901006219 4WSE2ED10-5X/5B9ET315K31EV

R901006218 4WSE2EM10-5X/5B9ET315K31EV

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R901004485 4WS2EM6-2X/0B12ET315K17EV-113

R901003060 4WS2EM10-5X/45B11T315K31EV

R901003007 4WS2EM10-5X/20B11ET315K31AV

R901002262 4WSE3EE16-1X/150B8-315K9DV

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R900960652 4WS2EM16-2X/150B12T315K8CV-104

R900960651 4WS2EM10-4X/75B3T315K8CV-24

R900960575 4WS2EM16-2X/200B12ET315K8EV

R900960539 4WS2EB10-4X/45B2ET40K8AV

R900960536 4WSE3EE25-2X/500B8-315K9EV

R900960302 4WS2EM10-4X/20B4ET315K8EV

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R900958796 4WSE2EE10A-4X/60B9ET315K9DV

R900958263 4WS2EM10-5X/20B11-315K31EV

R900957873 4WS2EM16-2X/200B12ET315K8DV

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R900953933 4WSE3EE25-2X/400B9-315K9EM

R900952651 4WS2EM10-5X/45B11-315K31EV

R900952168 4WSE2EM6-2X/20B9ET315K17EV

R900952167 4WSE2EM6-2X/15B9ET315K17EV

R900952166 4WSE2EM6-2X/10B9ET315K17EV

R900952165 4WSE2EM6-2X/5B9ET315K17EV

R900952164 4WSE2EM6-2X/2B9ET315K17EV

R900952159 4WSE2ED10-5X/20B9-210K31EV

R900951573 4WS2EM10-4X/5B2ET315K8BM-52

R900951559 4WSE3EE25-2X/400B8-315K9EM

R900951452 4WS2EM6-2X/20B11ET315K17EV

R900951451 4WS2EM6-2X/15B11ET315K17EV

R900951450 4WS2EM6-2X/10B11ET315K17EV

R900951449 4WS2EM6-2X/5B11ET315K17EV

R900951187 4WSE3EE16-1X/200B9T315K9EV

R900950971 4WS2EM10-4X/20B2ET315K8EV

R900950929 4WS2EM6-2X/2B11ET315K17EV

R900950890 4WS2EM10-5X/30B11T315K31EV

R900950888 4WS2EM10-5X/90B11T315K31EV

R900950542 4WSE2ED16-2X/150B9T210K9EV

R900950489 4WS2EB10-4X/45B2ET140K8AM

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伺服閥

液控伺服閥主要是指電液伺服閥,它在接受電氣模擬信號后，相應輸出調制的流量和壓力。它既是電液轉換元件，也是功率放大元件，它能夠將小功率的微弱電氣輸入信號轉換為大功率的液壓能（流量和壓力）輸出。在電液伺服系統中，它將電氣部分與液壓部分連接起來(lái)，實(shí)現電液信號的轉換與液壓放大。電液伺服閥是電液伺服系統控制的核心。

伺服閥的介紹、定義：

液控伺服閥是在伺服系統中將電信號輸入轉換為功率較大的壓力或流量壓力信號輸出的執行元件。它是一種電液轉換和功率放大元件。伺服閥的靈敏度高，快速性好，能將很小的電信號（例如10毫安）轉換成很大的液壓功率（如幾十匹馬力以上），可以驅動(dòng)多種類(lèi)型的負載。過(guò)去人們曾把噴嘴檔板閥、射流管或滑閥伺服馬達等液壓放大裝置都列入伺服閥范圍內。20世紀70年代以來(lái)，伺服閥一般僅指電液伺服閥。

伺服閥的工作原理：

典型的伺服閥由永磁力矩馬達、噴嘴、檔板、閥芯、閥套和控制腔組成(見(jiàn)圖)。當輸入線(xiàn)圈通入電流時(shí)，檔板向右移動(dòng)，使右邊噴嘴的節流作用加強，流量減少，右側背壓上升；同時(shí)使左邊噴嘴節流作用減小，流量增加，左側背壓下降。閥芯兩端的作用力失去平衡, 閥芯遂向左移動(dòng)。高壓油從S流向C2，送到負載。負載回油通過(guò) C1流過(guò)回油口，進(jìn)入油箱。閥芯的位移量與力矩馬達的輸入電流成正比，作用在閥芯上的液壓力與彈簧力相平衡，因此在平衡狀態(tài)下力矩馬達的差動(dòng)電流與閥芯的位移成正比。如果輸入的電流反向，則流量也反向。 

伺服閥主要用在電氣液壓伺服系統中作為執行元件（見(jiàn)液壓伺服系統）。在伺服系統中，液壓執行機構同電氣及氣動(dòng)執行機構相比，具有快速性好、單位重量輸出功率大、傳動(dòng)平穩、抗干擾能力強等特點(diǎn)。另一方面，在伺服系統中傳遞信號和校正特性時(shí)多用電氣元件。因此，現代高性能的伺服系統也都采用電液方式，伺服閥就是這種系統的必需元件。

伺服閥結構比較復雜，造價(jià)高，對油的質(zhì)量和清潔度要求高。新型的伺服閥正試圖克服這些缺點(diǎn)，例如利用電致伸縮元件的伺服閥，使結構大為簡(jiǎn)化。另一個(gè)方向是研制特殊的工作油（如電氣粘性油）。這種工作油能在電磁的作用下改變粘性系數。利用這一性質(zhì)就可通過(guò)電信號直接控制油流。

應用領(lǐng)域：

電液伺服閥廣泛地應用于電液位置,速度,加速度,力伺服系統,以及伺服振動(dòng)發(fā)生器中.它具有體積小,結構緊湊,功率放大系數高,控制精度高,直線(xiàn)性好,死區小,靈敏度高,動(dòng)態(tài)性能好以及響應速度快等優(yōu)點(diǎn).