REXROTH比例閥是閥內(nèi)比例電磁鐵輸入電壓信號產(chǎn)生相應(yīng)動作，使工作閥閥芯產(chǎn)生位移，閥口尺寸發(fā)生改變并以此完成與輸入電壓成比例壓力、流量輸出元件。閥芯位移也可以以機(jī)械、液壓或電形式進(jìn)行反饋。電液比例閥具有形式種類多樣、容易組成使用電氣及計算機(jī)控制各種電液系統(tǒng)、控制精度高、安裝使用靈活以及抗污染能力強(qiáng)等多方面優(yōu)點，應(yīng)用領(lǐng)域日益拓寬。電氣比例閥快易優(yōu)自動化選型與收錄，研發(fā)生產(chǎn)插裝式比例閥和比例多路閥充分考慮到工程機(jī)械使用特點，具有先導(dǎo)控制、負(fù)載傳感和壓力補(bǔ)償?shù)裙δ?。它出現(xiàn)對移動式液壓機(jī)械整體技術(shù)水平提升具有重要意義。特別是電控先導(dǎo)操作、無線遙控和有線遙控操作等方面展現(xiàn)了其良好應(yīng)用前景。
REXROTH比例閥的特點如下：
1)可實現(xiàn)壓力、速度的無極調(diào)節(jié)，避免了常通的開關(guān)式氣閥換向時的沖擊現(xiàn)象。
2)能實現(xiàn)遠(yuǎn)程控制和程序控制。
3)與斷續(xù)控制相比，系統(tǒng)簡化，元件大大減少。
4)與液壓比例閥相比，體積小、重量輕、結(jié)構(gòu)簡單、成本較低，但響應(yīng)速度比液壓系統(tǒng)慢得多，對負(fù)載變化也比較敏感。
5)使用功率小、發(fā)熱少、噪聲低。
6)不會發(fā)生火災(zāi)，不污染環(huán)境。受溫度變化的影響小。
REXROTH比例閥的現(xiàn)貨型號：
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0811404405 4WRL 25 V370M-3X/G24Z4/M
0811404207 4WRL 16 V200M-3X/G24Z4/M
0811405063 VT-VRRA 1-527-20/V0/2STV
0811405060 VT-VRRA1-527-20/V0
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0811404035 4WRPH6C3B24L-2X/G24Z4/M
R901382357 4WRPEH 6 C3 B25P-3X/M/24A1
R900775889 4WRSE10V50-3X/G24K0/A1V-429
R900244748 4WREE10W3-75-2X/G24K31/F1V
R900616436 4WRZE25W5-325-7X/6EG24N9ETK31/F1D3V
R900927356 4WREE 10 E-75/2X/G24K31/F1V
R900909367 4WREE6V08-2X/G24K31/A1V
R900927230 4WREE 10 E75-2X/G24K31/A1V
R900927233 4WREE 10 W75-2X/G24K31/A1V
R901382349 4WRPEH 6 C3 B24L-3X/M/24F1
R900928553 4WREE6E1-32-2X/G24K31/A1V
R901218100 3DREME 16 P-7X/200YG24K31F1V
R901218097 3DREME10P-7X/200YG24K31F1V
R900020154 VT3002-1-2X/48F
R900500051 DR10DP2-4X/150Y
R901010980 VT-MSPA2-1-1X/V0/0
R901002095 VT-VSPA2-1-2X/V0/T5
R901002090 VT-VSPA2-1-2X/V0/T1
R900020153 VT3002-1-2X/32D
R900579497 VT-5035-17
R900028816 AB32-12/00-K-006-22
R901102721 HED8OP-20/200K14
R901147104 PGH4-3X/050RE11VU2
R902482660 A10VSO71DR/31R-VPA42N00
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R900924975 4WREE10V50-2X/G24K31/F1V
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R900912156 4WREE 6 E08-2X/G24K31/A1V
R900617676 4WRZE 10 E85-7X/6EG24N9ETK31/A1D3M
R900955887 3DREP 6 C-2X/25EG24N9K4/M
R901057060 VT-VRPA1-151-1X/V0/0
R900958848 3DREPE 6 C-2X/25EG24N9K31/F1M
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R900711320 4WRKE 16 W8-200L-3X/6EG24ETK31/A1D3M
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R983037927 DBDS6K1X/400
R983037936 DBDS6P1X/200
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R900483786 ZDR6DP2-4X/75YM