MOOG D661-4651伺服閥
1.產(chǎn) 品 資 料 介 紹：
- 先導(dǎo)式兩級控制架構(gòu)：MOOG D661-4651 采用 “先導(dǎo)級 + 主級” 兩級設(shè)計，先導(dǎo)級為高性能比例電磁鐵驅(qū)動的雙噴嘴擋板閥，主級為大流量四通滑閥，通過先導(dǎo)級精準(zhǔn)控制主級閥芯位移。相比直動式結(jié)構(gòu)，可實現(xiàn)更大流量輸出，同時借助機(jī)械反饋桿形成閉環(huán)控制，兼顧控制精度與功率密度，適配大型液壓執(zhí)行機(jī)構(gòu)（如船舶舵機(jī)、鍛壓設(shè)備油缸）。
- 模塊化油口與安裝設(shè)計：閥體采用 ISO 4401 標(biāo)準(zhǔn)安裝底面，支持多種油口配置（如 P、T、A、B 四口標(biāo)準(zhǔn)布局及可選第五油口），可直接替換傳統(tǒng)伺服閥或比例閥，無需改造液壓系統(tǒng)閥塊。部分型號提供法蘭式安裝選項，適配不同設(shè)備的空間布局需求，降低集成難度。
- 抗污染與維護(hù)優(yōu)化結(jié)構(gòu)：主級閥芯與閥套采用 AISI 4140 合金鋼材，經(jīng)精密珩磨處理，配合間隙控制在 2-3μm，表面鍍硬鉻提升耐磨性；先導(dǎo)級內(nèi)置 20μm 精密過濾器，可過濾液壓油中微小雜質(zhì)，減少閥芯卡滯風(fēng)險。同時設(shè)計可拆卸式先導(dǎo)級組件，無需拆解主閥體即可更換先導(dǎo)部件，縮短維護(hù)時間。
- 高壓大流量輸出能力：最大工作壓力可達(dá) 35MPa，在 7MPa 閥壓降條件下，額定流量覆蓋 50-200L/min（具體視閥芯規(guī)格），能為重型液壓設(shè)備提供充足動力。即便在高壓差（25-35MPa）工況下，仍可保持流量輸出線性度，適配大型工程機(jī)械、冶金軋機(jī)等大負(fù)載場景。
- 高頻響與動態(tài)響應(yīng)特性：頻率響應(yīng)達(dá) 30-50Hz（±100% 輸入信號），100% 階躍響應(yīng)時間≤25ms，先導(dǎo)級比例電磁鐵采用低磁滯設(shè)計，配合主級閥芯的低摩擦特性，可快速跟隨控制指令調(diào)整流量，有效抑制液壓系統(tǒng)的動態(tài)滯后，保障高速運(yùn)動設(shè)備（如高速沖床）的控制穩(wěn)定性。
- 高精度比例控制指標(biāo)：流量滯環(huán)誤差低于 0.8%，線性度優(yōu)于 1%，通過機(jī)械反饋桿實現(xiàn)閥芯位移與輸入信號的精準(zhǔn)對應(yīng)。最小可控流量偏差≤0.5%，在低速、低流量微調(diào)場景（如精密壓力控制、同步運(yùn)動系統(tǒng)）中，可實現(xiàn)微米級位移控制，滿足高端制造設(shè)備需求。
MOOG D661-4651伺服閥 英文資料：
1、 Infrastructure and Design Characteristics
Pilot controlled two-stage control architecture: MOOG D661-4651 adopts a two-stage design of "pilot stage+main stage". The pilot stage is a high-performance proportional solenoid driven dual nozzle baffle valve, and the main stage is a large flow four-way slide valve, which precisely controls the displacement of the main stage valve core through the pilot stage. Compared to direct acting structures, it can achieve greater flow output and form closed-loop control with the help of mechanical feedback rods, balancing control accuracy and power density, and is suitable for large hydraulic actuators such as ship servos and forging equipment cylinders.
Modular oil port and installation design: The valve body adopts the ISO 4401 standard installation bottom surface, supporting multiple oil port configurations (such as P, T, A, B four port standard layout and optional fifth oil port), which can directly ｒｅｐｌａｃｅ traditional servo valves or proportional valves without the need to modify the hydraulic system valve block. Some models offer flange installation options to meet the spatial layout requirements of different devices and reduce integration difficulty.
Anti pollution and maintenance optimization structure: The main valve core and valve sleeve are made of AISI 4140 alloy steel, which has undergone precision honing treatment, and the clearance is controlled at 2-3 μ m. The surface is plated with hard chromium to improve wear resistance; The pilot stage is equipped with a 20 μ m precision filter, which can filter out small impurities in hydraulic oil and reduce the risk of valve core sticking. Simultaneously design detachable pilot stage components, which can ｒｅｐｌａｃｅ pilot components without disassembling the main valve body, reducing maintenance time.
2、 Core performance and control accuracy
High pressure and high flow output capability: The maximum working pressure can reach 35MPa, and under the condition of 7MPa valve pressure ｄｒｏｐ, the rated flow covers 50-200L/min (depending on the valve core specifications), which can provide sufficient power for heavy-duty hydraulic equipment. Even under high pressure differentials (25-35MPa), the flow output linearity can still be maintained, making it suitable for large load scenarios such as construction machinery and metallurgical rolling mills.
High frequency response and dynamic response characteristics: The frequency response reaches 30-50Hz (± 100% input signal), with a 100% step response time of ≤ 25ms. The pilot stage proportional electromagnet adopts a low hysteresis design, which, combined with the low friction characteristics of the main stage valve core, can quickly follow the control instructions to adjust the flow rate, effectively suppressing the dynamic hysteresis of the hydraulic system and ensuring the control stability of high-speed moving equipment (such as high-speed punching machines).
High precision proportional control indicators: flow hysteresis error is less than 0.8%, linearity is better than 1%, and precise correspondence between valve core displacement and input signal is achieved through mechanical feedback rod. The minimum controllable flow deviation is ≤ 0.5%. In low-speed and low flow fine-tuning scenarios (such as precision pressure control and synchronous motion systems), micrometer level displacement control can be achieved to meet the requirements of high-end manufacturing equipment.
MOOG D661-4651伺服閥 產(chǎn)品展示
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The content is from Ruichang Mingsheng Automation Equipment Co., LTD
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