德國(guó)力士樂(lè)Rexroth葉片泵R412002224

價(jià)格：8506個(gè)
供貨總量：1000
最小起訂：1
發(fā)貨期限：1天
公司：上海滄燦自動(dòng)化科技有限公司銷(xiāo)售部
聯(lián)系人：張瑞先生

13795349318

打電話(huà)時(shí)請(qǐng)告知是在中國(guó)石材之窗上看到的，謝謝!

德國(guó)力士樂(lè)Rexroth葉片泵R412002224德國(guó)力士樂(lè)Rexroth葉片泵R412002224

上海滄燦是德國(guó)Rexroth力士樂(lè)的一級(jí)代理商，大量庫(kù)存，價(jià)格優(yōu)惠.

歡迎新老顧客來(lái)店選購(gòu).本店產(chǎn)品質(zhì)量永不打烊

021-37695830 qq.2904410653 郵箱加@qq.com

REXROTH力士樂(lè)比例閥也就是說(shuō)，伺服閥的主閥是靠前置級(jí)閥的輸出壓力來(lái)控制的，而前置級(jí)閥的壓力則來(lái)自于伺服閥的入口p，假如p口的壓力不足，前置級(jí)閥就不能輸出足夠的壓力來(lái)推動(dòng)主閥芯動(dòng)作。

而我們知道，當(dāng)負(fù)載為零的時(shí)候，如果四通滑閥完全打開(kāi)，p口壓力＝t口壓力＋閥口壓力損失（忽略油路上的其它壓力損失），如果閥口壓力損失很小，t口壓力又為零，那么p口的壓力就不足以供給前置級(jí)閥來(lái)推動(dòng)主閥芯，整個(gè)伺服閥就失效了。所以伺服閥的閥口做得偏小，即使在閥口全開(kāi)的情況下，也要有一定的壓力損失，來(lái)維持前置級(jí)閥的正常工作。

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