S20A3.0管式單向閥

S20A3.0/管式單向閥 德國原裝博世力士樂REXROTH單向閥 電磁閥

我公司現(xiàn)貨供應博世力士樂（BOSCH-REXROTH）、阿托斯ATOS、派克Parker、迪普馬DUPLOMATIC、油研YUKEN;本特利bentley、貝加萊B&R、西門子、光洋KOYO，美國ASCO，美國PARKER派克 等系列進口產(chǎn)品 

S20A3.0/管式單向閥

技術參數(shù)

公稱通徑:21/16“~41/16“

工作壓力：2,000~15,000PSI

溫度：-60?C~ 121?C(K,U)

產(chǎn)品規(guī)范級別：PSL3~4

產(chǎn)品性能級別：PR1~2

材料級別：AA~FF

單向閥是氣流只能一個方向流動而不能反向流動的方向控制閥。其工作原理與液壓單向閥一樣。壓縮空氣從P口進入，克服彈簧力和摩擦力使單向閥閥口開啟，壓縮空氣從P流至A；當P口無壓縮空氣時，在彈簧力和A口(腔)余氣力作用下；閥口處于關閉狀 態(tài)，使從A至P氣流不通。單向閥應用于不允許氣流反向流動的場合，如空壓機向氣罐充氣 時，在空壓機與氣罐之間設置一單向閥，當空壓機停止工作時，可防止氣罐中的壓縮空氣回流 到空壓機。單向閥還常與節(jié)流閥、順序閥等組合成單向節(jié)流閥、單向順序閥使用。

(單向閥)止回閥用途廣泛，有很多種類，下面說的是供水和熱力常用的止回閥：

1、彈簧式：液體由下而上，依靠壓力頂起彈簧控制的閥瓣，壓力消失后，彈簧力將閥瓣壓下，封閉液體倒流。常用于通徑較小的止回閥。

2、重力式：和彈簧式相似，依靠閥瓣的自身重力封閉，防止倒流。

3、旋啟式：液體在閥體內直通，依靠壓力頂開一側的旋轉閥瓣，壓力失去后，閥瓣依靠自重回位，反向的液體壓力封閉閥瓣。

4.塑料隔膜式: 外殼和隔膜均為塑料.一般外殼為ABS,PE,PP,NYLON, PC.隔膜有硅樹脂,氟樹脂等。

其它的單向閥（止回閥），如排污的止回閥，人防的防爆閥和液體使用的止回閥的原理是大同小異。

液壓機（又名：油壓機）液壓機是一種利用液體靜壓力來加工金屬、塑料、橡膠、木材、粉末等制品的機械。它常用于壓制工藝和壓制成形工藝，如：鍛壓、沖壓、冷擠、校直、彎曲、翻邊、薄板拉深、粉末冶金、壓裝等等。

它的原理是利用帕斯卡定律制成的利用液體壓強傳動的機械，種類很多。當然，用途也根據(jù)需要是多種多樣的。如按傳遞壓強的液體種類來分，有油壓機和水壓機兩大類。

液壓機單向閥型號

力士樂REXROTH管式單向閥S6…S30 A..-1X/...

R901454057 S10A00-1X/450J3

R901454175 S10A00-1X/450J3/12

R901454058 S10A02-1X/450J3

R901454059 S10A02-1X/450J3/12

R901424189 S10A05-1X/450J3

R901456430 S10A05-1X/450J3B00

R901454644 S10A05-1X/450J3B08

R901454645 S10A05-1X/450J3B15

R901449002 S10A05-1X/450J3/12

R901454060 S10A15-1X/450J3

R901451456 S10A15-1X/450J3/12

R901454061 S10A30-1X/450J3

R901454176 S10A30-1X/450J3/12

R901454062 S10A50-1X/450J3

R901454177 S10A50-1X/450J3/12

R901454063 S13A00-1X/450J3

R901454178 S13A00-1X/450J3/12

R901444092 S13A02-1X/450J3

R901454179 S13A02-1X/450J3/12

R901454065 S13A05-1X/450J3

R901454064 S13A05-1X/450J3B00

R901454180 S13A05-1X/450J3/12

R901454066 S13A15-1X/450J3

R901454182 S13A15-1X/450J3/12

R901454067 S13A30-1X/450J3

R901454183 S13A30-1X/450J3/12

R901454069 S13A50-1X/450J3

R901454184 S13A50-1X/450J3/12

R901454070 S20A00-1X/450J3

R901454185 S20A00-1X/450J3/12

R901444093 S20A02-1X/450J3

R901454071 S20A02-1X/450J3/12

R901424190 S20A05-1X/450J3

R901456431 S20A05-1X/450J3B00

R901451454 S20A05-1X/450J3B15/12

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R901454186 S20A15-1X/450J3/12

R901451714 S20A30-1X/450J3

R901454075 S20A30-1X/450J3/12

R901454076 S20A50-1X/450J3

R901454187 S20A50-1X/450J3/12

R901454077 S23A00-1X/420J3

R901454188 S23A00-1X/420J3/12

R901454078 S23A02-1X/420J3

R901454189 S23A02-1X/420J3/12

R901454079 S23A05-1X/420J3

R901454190 S23A05-1X/420J3/12

R901454080 S23A15-1X/420J3

R901454646 S23A15-1X/420J3B10

R901454191 S23A15-1X/420J3/12

R901454081 S23A30-1X/420J3

R901454192 S23A30-1X/420J3/12

R901454083 S23A50-1X/420J3

R901454647 S23A50-1X/420J3B00

R901454193 S23A50-1X/420J3/12

R901454085 S23A80-1X/420J3

R901454086 S30A00-1X/420J3

R901454194 S30A00-1X/420J3/12

R901454088 S30A02-1X/420J3

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R901454090 S30A05-1X/420J3

R901456599 S30A05-1X/420J3B00

R901461534 S30A05-1X/420J3B10

R901454196 S30A05-1X/420J3/12

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R901454198 S30A30-1X/420J3/12

R901454094 S30A50-1X/420J3

R901454199 S30A50-1X/420J3/12

R901454095 S30A80-1X/420J3

R901454043 S6A00-1X/450J3

R901454045 S6A02-1X/450J3

R901454046 S6A05-1X/450J3

R901454047 S6A15-1X/450J3

R901454048 S6A30-1X/450J3

R901454049 S6A50-1X/450J3

R901454050 S8A00-1X/450J3

R901454171 S8A00-1X/450J3/12

R901454051 S8A02-1X/450J3

R901454052 S8A05-1X/450J3

R901454172 S8A05-1X/450J3/12

R901454054 S8A15-1X/450J3

R901454173 S8A15-1X/450J3/12

R901454055 S8A30-1X/450J3

R901454174 S8A30-1X/450J3/12

R901454056 S8A50-1X/450J3

力士樂REXROTH截止閥S52...S150

R900419834 S102F0-1X/

R900415099 S102F1-1X/

R900536870 S102F1-1X//12

R900461432 S102F1-1X//5

R900468632 S102F1-1X/ SO6

R900342762 S102F1-1X/V

R900403998 S102F1-1X/V/5

R900472434 S102F2-1X/

R900405525 S102F2-1X/5

R900424628 S102F3-1X/

R900372480 S102F3-1X/5

R900775128 S125F1-1X/

R900451745 S52F0-1X/

R900473775 S52F0-1X/5

R900345561 S52F0-1X/5 SO6

R900343333 S52F0-1X/ SO6

R900490803 S52F0-1X/V

R900444199 S52F1-1X/

R900081556 S52F1-1X//12

R900454189 S52F1-1X/5

R900479136 S52F1-1X/5 SO6

R900486054 S52F1-1X/J

R900451716 S52F1-1X/ SO6

R900462637 S52F1-1X/V

R900377137 S52F1-1X/V SO6

R900471511 S52F1-1X/V/5

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R900479258 S52F2-1X/5

R900486148 S52F2-1X/J

R900427338 S52F2-1X/ SO6

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R900497866 S52F2-1X/V SO6

R900387129 S52F2-1X/V/5

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R900778756 S52F3-1X//12

R900469458 S52F3-1X//5

R900490188 S52F3-1X/5 SO6

R900389647 S52F3-1X/J

R900462159 S52F3-1X/ SO6

R900403053 S52F3-1X/V

R900392302 S52F3-1X/V SO6

R900417749 S52F3-1X/V/5

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R900412820 S52F5-1X/5

R900464840 S52F5-1X/ SO6

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R900445213 S52P1-1X/

R900461433 S52P1-1X//5

R900359403 S52P1-1X/V

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R900505733 S52P3-1X/V

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R900383686 S52P5-1X//5

R900454193 S62F0-1X/

R900352912 S62F0-1X//5

R900375039 S62F0-1X/ SO6

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R900495362 S62F1-1X/

R900759680 S62F1-1X//12

R900586956 S62F1-1X//5

R900461430 S62F1-1X/5

R900345560 S62F1-1X/5 SO6

R900462163 S62F1-1X/ SO6

R900473275 S62F1-1X/V

R900401050 S62F1-1X/V/5

R901426698 S62F1-1X=V

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R900400731 S62F2-1X/5

R900334244 S62F2-1X/V

R900497865 S62F2-1X/V SO6

R900401049 S62F2-1X/V/5

R900448170 S62F3-1X/

R900406838 S62F3-1X//5

R900472820 S62F3-1X/ SO6

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R900407208 S62F3-1X/V/5

R900445214 S62P1-1X/

R900461434 S62P1-1X/5

R900211273 S62P1-1X/V

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R900464478 S62P3-1X/

R900386740 S62P3-1X//5

R900337936 S82F0-1X/

R900411666 S82F0-1X/5

R901114168 S82F0-1X/V

R900444819 S82F1-1X/

R900766589 S82F1-1X//12

R900461431 S82F1-1X//5

R900492655 S82F1-1X/JV

R900451717 S82F1-1X/ SO6

R900408323 S82F1-1X/V

R900403997 S82F1-1X/V/5

R900455986 S82F2-1X/

R900402795 S82F2-1X/5

R900492656 S82F2-1X/JV

R900498983 S82F2-1X/ SO6

R900408324 S82F2-1X/V

R900459789 S82F3-1X/

R900400399 S82F3-1X/5

R900405609 S82F3-1X/ SO6

R901175953 S82F3-1X/V

R900494038 S82F3-1X/V/5

R900454752 S82P1-1X/

R900461435 S82P1-1X/5

R900479594 S82P1-1X/V

R900384546 S82P2-1X/

R900730560 S150F1-1X/

R901145845 S150F1-1X/V

力士樂REXROTH插裝式單向閥M-SR 6...30

R900435539 M-SR10KD50-1X/

R900381073 M-SR10KD02-1X/

R900301891 M-SR10KD05-1X/

R900440016 M-SR10KD05-1X/B12

R900301898 M-SR10KD15-1X/

R900301905 M-SR10KD30-1X/

R900365223 M-SR10KD50-1X/

R900356291 M-SR10KE00-1X/

R900484616 M-SR10KE00-1X/V

R901414189 M-SR10KE01-1X/

R900345745 M-SR10KE02-1X/

R900374787 M-SR10KE02-1X/V

R900344549 M-SR10KE05-1X/

R900348632 M-SR10KE05-1X/V

R901319215 M-SR10KE05-1X=

R901339055 M-SR10KE05-1X=V

R900346857 M-SR10KE15-1X/

R900422425 M-SR10KE15-1X/V

R900962882 M-SR10KE15-1X/V

R900346936 M-SR10KE30-1X/

R900382015 M-SR10KE30-1X/V

R900361982 M-SR10KE50-1X/

R900346343 M-SR10KE50-1X/V

R900359836 M-SR15KD00-1X/

R900365217 M-SR15KD02-1X/

R900365216 M-SR15KD02-1X/

R900301892 M-SR15KD05-1X/

R900362864 M-SR15KD05-1X/SO56

R900384870 M-SR15KD05-1X/SO72

R900301899 M-SR15KD15-1X/

R900301906 M-SR15KD30-1X/

R900365224 M-SR15KD50-1X/

R900573554 M-SR15KD50-1X/B08

R900360254 M-SR15KE00-1X/

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R901425705 M-SR15KE01-1X/

R900348943 M-SR15KE02-1X/

R900390429 M-SR15KE02-1X/V

R901351241 M-SR15KE02-1X=

R900345372 M-SR15KE05-1X/

R900518872 M-SR15KE05-1X/MK

R900350794 M-SR15KE05-1X/V

R901341380 M-SR15KE05-1X=

R900346858 M-SR15KE15-1X/

R900409567 M-SR15KE15-1X/SO8

R900387662 M-SR15KE15-1X/V

R900346082 M-SR15KE30-1X/

R900382309 M-SR15KE30-1X/V

R901348955 M-SR15KE30-1X=

R900348818 M-SR15KE50-1X/

R900361867 M-SR15KE50-1X/V

R900365529 M-SR20KD10-1X/

R900365218 M-SR20KD02-1X/

R900301893 M-SR20KD05-1X/

R900301900 M-SR20KD15-1X/

R900301907 M-SR20KD30-1X/

R900365225 M-SR20KD50-1X/

R900373516 M-SR20KE50-1X/SO1

R900350936 M-SR20KE00-1X/

R900382674 M-SR20KE00-1X/V

R901432713 M-SR20KE01-1X/

R900345744 M-SR20KE02-1X/

R900377614 M-SR20KE02-1X/V

R900340979 M-SR20KE05-1X/

R900392631 M-SR20KE05-1X/MT

R900468994 M-SR20KE05-1X/SO10

R900350795 M-SR20KE05-1X/V

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R900348667 M-SR20KE15-1X/V

R900346638 M-SR20KE30-1X/

R900420865 M-SR20KE30-1X/V

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R900430183 M-SR20KE50-1X/V

R900580084 M-SR20KE50-1X/VSO9

R900365219 M-SR25KD02-1X/

R900301894 M-SR25KD05-1X/

R900403942 M-SR25KD05-1X/B10

R900301901 M-SR25KD15-1X/

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R900484361 M-SR25KD50-1X/B10

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R900344778 M-SR25KE05-1X/

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R901324297 M-SR25KE05-1X=

R900348453 M-SR25KE15-1X/

R901062482 M-SR25KE15-1X/SO27

R900500220 M-SR25KE15-1X/V

R900346391 M-SR25KE30-1X/

R900385859 M-SR25KE30-1X/V

R900351943 M-SR25KE50-1X/

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R900301895 M-SR30KD05-1X/

R900514077 M-SR30KD05-1X/B05

R901263853 M-SR30KD05-1X=

R900301902 M-SR30KD15-1X/

R900322482 M-SR30KD15-1X/SO4

R900301909 M-SR30KD30-1X/

R900365227 M-SR30KD50-1X/

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R900501576 M-SR30KE00-1X/V

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R900345743 M-SR30KE02-1X/

R900356970 M-SR30KE02-1X/V

R900344919 M-SR30KE05-1X/

R900472648 M-SR30KE05-1X/SO281

R900350797 M-SR30KE05-1X/V

R901324296 M-SR30KE05-1X=

R901432895 M-SR30KE120-1X/

R901335698 M-SR30KE120-1X/SO28

R900348666 M-SR30KE15-1X/

R901062486 M-SR30KE15-1X/SO27

R900379888 M-SR30KE15-1X/V

R901347873 M-SR30KE15-1X=

R900345961 M-SR30KE30-1X/

R900516562 M-SR30KE30-1X/MK

R900356969 M-SR30KE30-1X/V

R900349973 M-SR30KE50-1X/

R900350796 M-SR30KE50-1X/V

R901338114 M-SR30KE60-1X/MT

R900365221 M-SR6KD50-1X/

R900365214 M-SR6KD02-1X/

R900301889 M-SR6KD05-1X/

R900301896 M-SR6KD15-1X/

R900301903 M-SR6KD30-1X/

R900437261 M-SR6KD50-1X/

R900392934 M-SR8KD05-1X/SO7

R900387538 M-SR8KD30-1X/

R900365222 M-SR8KD50-1X/

R900365215 M-SR8KD02-1X/

R900301890 M-SR8KD05-1X/

R900582721 M-SR8KD05-1X/B06

R900923840 M-SR8KD05-1X/B07

R900323467 M-SR8KD05-1X/B08

R900465956 M-SR8KD05-1X/B10

R900484830 M-SR8KD05-1X/B12

R900512017 M-SR8KD05-1X/B14

R900395968 M-SR8KD05-1X/B15

R900301897 M-SR8KD15-1X/

R900301904 M-SR8KD30-1X/

R900361981 M-SR8KE00-1X/

R900371497 M-SR8KE00-1X/V

R901425717 M-SR8KE01-1X/

R900357438 M-SR8KE02-1X/

R900361251 M-SR8KE02-1X/V

R901281004 M-SR8KE02-1X=

R901281718 M-SR8KE02-1X=V

R900346083 M-SR8KE05-1X/

R900357718 M-SR8KE05-1X/V

R900477349 M-SR8KE05-1X/VSO11

R901280323 M-SR8KE05-1X=

R900348143 M-SR8KE15-1X/

R900397443 M-SR8KE15-1X/V

R901340 M-SR8KE15-1X=

R900348329 M-SR8KE30-1X/

R900483387 M-SR8KE30-1X/V

R901324291 M-SR8KE30-1X=

R900356258 M-SR8KE50-1X/

R900430077 M-SR8KE50-1X/V

R978917682 M-SR10KE05-1X/SO43A-1703

R978917686 M-SR10KE05-1X/VSO43A-1703

R978917683 M-SR10KE15-1X/SO43A-1703

R978917687 M-SR10KE15-1X/VSO43A-1703

R978917684 M-SR10KE30-1X/SO43A-1703

R978917688 M-SR10KE30-1X/VSO43A-1703

R978917685 M-SR10KE50-1X/SO43A-1703

R978917689 M-SR10KE50-1X/VSO43A-1703

R978913656 M-SR15KE05-1X/SO43A-1193

R978917690 M-SR15KE05-1X/SO43A-1703

R978917694 M-SR15KE05-1X/VSO43A-1703

R978917691 M-SR15KE15-1X/SO43-1703

R978917695 M-SR15KE15-1X/VSO43A-1703

R978917692 M-SR15KE30-1X/SO43A-1703

R978917696 M-SR15KE30-1X/VSO43A-1703

R978917693 M-SR15KE50-1X/SO43A-1703

R978917697 M-SR15KE50-1X/VSO43A-1703

R978870139 M-SR20KE05-1X/SO43A-1132

R978917698 M-SR20KE05-1X/SO43A-1703

R978917702 M-SR20KE05-1X/VSO43A-1703

R978917699 M-SR20KE15-1X/SO43A-1703

R978917703 M-SR20KE15-1X/VSO43A-1703

R978917700 M-SR20KE30-1X/SO43A-1703

R978917704 M-SR20KE30-1X/VSO43A-1703

R978917701 M-SR20KE50-1X/SO43A-1703

R978917705 M-SR20KE50-1X/VSO43A-1703

R978005975 M-SR25KE00-1X/SO43A-1703

R978917706 M-SR25KE05-1X/SO43A-1703

R978917710 M-SR25KE05-1X/VSO43A-1703

R978917707 M-SR25KE15-1X/SO43A-1703

R978917711 M-SR25KE15-1X/VSO43A-1703

R978917708 M-SR25KE30-1X/SO43A-1703

R978917712 M-SR25KE30-1X/VSO43A-1703

R978917709 M-SR25KE50-1X/SO43A-1703

R978917713 M-SR25KE50-1X/VSO43A-1703

R978917714 M-SR30KE05-1X/SO43A-1703

R978917718 M-SR30KE05-1X/VSO43A-1703

R978917715 M-SR30KE15-1X/SO43A-1703

R978917719 M-SR30KE15-1X/VSO43A-1703

R978917716 M-SR30KE30-1X/SO43A-1703

R978917720 M-SR30KE30-1X/VSO43A-1703

R978917717 M-SR30KE50-1X/SO43A-1703

R978917721 M-SR30KE50-1X/VSO43A-1703

R987116692 M-SR8KD02-1X/V

R978892073 M-SR8KE05-1X/SO43A-1318

R978917674 M-SR8KE05-1X/SO43A-1703

R978917678 M-SR8KE05-1X/VSO43A-1703

R978917675 M-SR8KE15-1X/SO43A-1703

R978917679 M-SR8KE15-1X/VSO43A-1703

R978917676 M-SR8KE30-1X/SO43A-1703

R978917680 M-SR8KE30-1X/VSO43A-1703

R978917677 M-SR8KE50-1X/SO43A-1703

R978917677 M-SR8KE50-1X/SO43A-1703

R978917681 M-SR8KE50-1X/VSO43A-1703

力士樂REXROTH止回閥安裝裝置M-SR 52...150

R900306403 M-SR102KD00-1X/

R900306441 M-SR102KD00-1X/V

R900306409 M-SR102KD05-1X/

R900306447 M-SR102KD05-1X/V

R900306415 M-SR102KD15-1X/

R900306453 M-SR102KD15-1X/V

R900700382 M-SR102KD30-1X/

R901131741 M-SR102KD30-1X/V

R900381566 M-SR102KE05-1X/

R900306422 M-SR102KE00-1X/

R900306460 M-SR102KE00-1X/V

R900306428 M-SR102KE05-1X/

R900306466 M-SR102KE05-1X/V

R900306434 M-SR102KE15-1X/

R900306472 M-SR102KE15-1X/V

R901204285 M-SR102KE30-1X

R900306404 M-SR125KD00-1X/

R900306442 M-SR125KD00-1X/V

R900306410 M-SR125KD05-1X/

R900306448 M-SR125KD05-1X/V

R901078689 M-SR125KD30-1X/SO31

R900306423 M-SR125KE00-1X/

R900306461 M-SR125KE00-1X/V

R900306429 M-SR125KE05-1X/

R900306467 M-SR125KE05-1X/V

R900306405 M-SR150KD00-1X/

R900306443 M-SR150KD00-1X/V

R900306411 M-SR150KD05-1X/

R900306449 M-SR150KD05-1X/V

R900306424 M-SR150KE00-1X/

R900306462 M-SR150KE00-1X/V

R900306430 M-SR150KE05-1X/

R900306468 M-SR150KE05-1X/V

R900306400 M-SR52KD00-1X/

R900306438 M-SR52KD00-1X/V

R900306406 M-SR52KD05-1X/

R900306444 M-SR52KD05-1X/V

R900306412 M-SR52KD15-1X/

R900306450 M-SR52KD15-1X/V

R900306416 M-SR52KD30-1X/

R900306454 M-SR52KD30-1X/V

R900382324 M-SR52KE05-1X/

R900381 M-SR52KE15-1X/

R900306746 M-SR52KE00-1X/

R900306747 M-SR52KE00-1X/V

R900386684 M-SR52KE02-1X/

R901088957 M-SR52KE02-1X/V

R900306740 M-SR52KE05-1X/

R901064071 M-SR52KE05-1X/SO27

R900306743 M-SR52KE05-1X/V

R900306741 M-SR52KE15-1X/

R900306744 M-SR52KE15-1X/V

R900306742 M-SR52KE30-1X/

R900306745 M-SR52KE30-1X/V

R900306401 M-SR62KD00-1X/

R900306439 M-SR62KD00-1X/V

R900306407 M-SR62KD05-1X/

R900306445 M-SR62KD05-1X/V

R900306413 M-SR62KD15-1X/

R900306451 M-SR62KD15-1X/V

R900306417 M-SR62KD30-1X/

R900306455 M-SR62KD30-1X/V

R900381565 M-SR62KE00-1X/

R900381766 M-SR62KE05-1X/

R900306420 M-SR62KE00-1X/

R900306458 M-SR62KE00-1X/V

R900386685 M-SR62KE02-1X/

R900306426 M-SR62KE05-1X/

R900306464 M-SR62KE05-1X/V

R900306432 M-SR62KE15-1X/

R900306470 M-SR62KE15-1X/V

R900306436 M-SR62KE30-1X/

R900306474 M-SR62KE30-1X/V

R900306402 M-SR82KD00-1X/

R900306440 M-SR82KD00-1X/V

R900306408 M-SR82KD05-1X/

R900306446 M-SR82KD05-1X/V

R900306414 M-SR82KD15-1X/

R900306452 M-SR82KD15-1X/V

R900306418 M-SR82KD30-1X/

R900306456 M-SR82KD30-1X/V

R900381713 M-SR82KE00-1X/

R900306421 M-SR82KE00-1X/

R900306459 M-SR82KE00-1X/V

R900306427 M-SR82KE05-1X/

R900361690 M-SR82KE05-1X/SO5

R900306465 M-SR82KE05-1X/V

R900306433 M-SR82KE15-1X/

R900306471 M-SR82KE15-1X/V

R900306437 M-SR82KE30-1X/

R900306475 M-SR82KE30-1X/V

力士樂REXROTH疊加式液控單向閥Z2S 6

電磁線圈是通電產(chǎn)生電磁的一種裝置。在鐵芯的外部纏繞與其功率相匹配的導電繞組，這種通有電流的線圈像磁鐵一樣具有磁性，它也叫做電磁鐵（electromagnet）。我們通常把它制成條形或蹄形狀，以使鐵芯更加容易磁化。另外，為了使電磁鐵斷電立即消磁，我們往往采用消磁較快的的軟鐵或硅鋼材料來制做。這樣的電磁鐵在通電時有磁性，斷電后磁就隨之消失。