威格士3520V-25A9/30A9/35A9/38A9-1AA-22R葉片泵外形尺寸相對(duì)小，這些代號(hào)業(yè)經(jīng)證實(shí)能為所列產(chǎn)品 ( 無(wú)論哪家制造商的 ) 提供長(zhǎng)而***的使用壽命。液壓系統(tǒng)中的油液起著流體傳動(dòng)、元件潤(rùn)滑和冷卻的多重功能。它們?cè)谝簤合到y(tǒng)中的關(guān)鍵作用是必須滿足工作條件和***元件的壽命。液壓系統(tǒng)對(duì)***的石油基液壓油的基本要求是：1. 足夠的抗磨添加劑2. 在工作溫度下有正確的黏度3. 充分的防腐和防氧化能力從---廠商處得到***油液提供這些性能。兩種***的油液滿足現(xiàn)代液壓系統(tǒng)的要求：·抗磨型液壓油，根據(jù) astm-d-2882 的泵磨損試驗(yàn)。·汽車曲軸油箱，按照 sae j183 jun89標(biāo)記 "sc"，"sd"，"se"，"sf" 或 "sg"。有關(guān)正確的黏度和正確選擇液壓系統(tǒng)油液的進(jìn)一步資料，參考樣本 694。
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2520V-21A9-1BC-22R
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2520V-10A11-1BC-22R
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2520V-10A12-1BC-22R
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2520V-12A12-1BC-22R
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2520V-10A2-1BD-22R
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威格士3520V-25A9/30A9/35A9/38A9-1AA-22R葉片泵外形尺寸相對(duì)小，在葉片、轉(zhuǎn)子、定子與配流盤之間構(gòu)成若干密封空間。當(dāng)葉片從小半徑曲線段向大半徑曲線滑動(dòng)時(shí)，葉片外伸,這時(shí)所構(gòu)成的密封容積由小變大，形成部分真空，油液便經(jīng)吸油窗口吸入;而處于從大半徑曲線段向小半徑曲線滑動(dòng)的葉片縮回，所構(gòu)成的密封容積由大變小，其中的油液受到擠壓，經(jīng)過(guò)壓油窗口壓出這種葉片泵每轉(zhuǎn)-一周，每個(gè)密封容腔完成兩次吸、壓油過(guò)程，故這種泵稱為雙作用葉片泵。同時(shí)，泵中兩吸油區(qū)和兩壓油區(qū)各自對(duì)稱，使作用在轉(zhuǎn)子.上的徑向液壓力互相平衡，所以這種泵又被稱為平衡式葉片泵或雙作用卸荷式葉片泵。這種泵的排量不可調(diào)，因此它是定量泵。2.雙作用葉片泵排量和流量圖可知，泵軸轉(zhuǎn)-轉(zhuǎn)時(shí)，從吸油窗口流向壓油窗口的液體體積為大半徑為r，小半徑為r,寬度為b的圓環(huán)的體積。因?yàn)槭请p作用泵，所以雙作用葉片泵的排量為葉片體積對(duì)排量無(wú)影響。因?yàn)樵趬河颓?，葉片縮回排出的液體體積補(bǔ)償了葉片在壓油腔所占的體積。
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