北京原装华德换向阀4WEH10K20B/6AG24NETZ5

北京原装华德换向阀4WEH10K20B/6AG24NETZ5

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6J61B/CG24NDL 4WEH10E20B/6AW220-50NEZ4

4WE6J61B/CG24NZ4 4WEH10E20B/6AW220-50NEZ5

4WE6J61B/CG24NZ5 4WEH10E20B/6AW220-50NEZ5L

4WE6J61B/CG24NZ5L 4WEH10E20B/6AW220-50NTZ4

4WE6J61B/CW220-50N9DKL 4WEH10E20B/6AW220-50NTZ5

4WE6J61B/CW220-50N9DL 4WEH10E20B/6AW220-50NTZ5L

4WE6J61B/CW220-50N9Z4 4WEH10E20B/6AW220-50NZ4

4WE6J61B/CW220-50N9Z5 4WEH10E20B/6AW220-50NZ5

4WE6J61B/CW220-50N9Z5L 4WEH10E20B/6AW220-50NZ5L

4WE6J61B/CW220-50NDKL 4WEH10E20B/6EG24NETZ4

4WE6J61B/CW220-50NDL 4WEH10E20B/6EG24NETZ5

4WE6J61B/CW220-50NZ4 4WEH10E20B/6EG24NETZ5L

4WE6J61B/CW220-50NZ5 4WEH10E20B/6EG24NEZ4

4WE6J61B/CW220-50NZ5L 4WEH10E20B/6EG24NEZ5

4WE6L50B/AG24N         4WEH10E20B/6EG24NEZ5L

4WE6L50B/AW220-50N 4WEH10E20B/6EG24NTZ4

4WE6L50B/BG24N         4WEH10E20B/6EG24NTZ5

4WE6L50B/BW220-50N 4WEH10E20B/6EG24NTZ5L

4WE6L61B/CG12N9DKL 4WEH10E20B/6EG24NZ4

4WE6L61B/CG12N9DL 4WEH10E20B/6EG24NZ5

4WE6L61B/CG12N9Z5 4WEH10E20B/6EG24NZ5L

4WE6L61B/CG12N9Z5L 4WEH10E20B/6EW220-50NETZ4

4WE6L61B/CG12NDKL 4WEH10E20B/6EW220-50NETZ5

4WE6L61B/CG12NDL 4WEH10E20B/6EW220-50NETZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6L61B/CG12NK4 4WEH10E20B/6EW220-50NEZ4

4WE6L61B/CG12NZ5 4WEH10E20B/6EW220-50NEZ5

4WE6L61B/CG12NZ5L 4WEH10E20B/6EW220-50NEZ5L

4WE6L61B/CG24N9DKL 4WEH10E20B/6EW220-50NTZ4

4WE6L61B/CG24N9DL 4WEH10E20B/6EW220-50NTZ5

4WE6L61B/CG24N9Z5 4WEH10E20B/6EW220-50NTZ5L

4WE6L61B/CG24N9Z5L 4WEH10E20B/6EW220-50NZ4

4WE6L61B/CG24NDKL 4WEH10E20B/6EW220-50NZ5

4WE6L61B/CG24NDL 4WEH10E20B/6EW220-50NZ5L

4WE6L61B/CG24NK4 4WEH10F20B/6EG24NETZ4

4WE6L61B/CG24NZ5 4WEH10F20B/6EG24NETZ5

4WE6L61B/CG24NZ5L 4WEH10F20B/6EG24NETZ5L

4WE6L61B/CW220-50N9DKL 4WEH10F20B/6EG24NEZ4

4WE6L61B/CW220-50N9DL 4WEH10F20B/6EG24NEZ5

4WE6L61B/CW220-50N9Z5 4WEH10F20B/6EG24NEZ5L

4WE6L61B/CW220-50N9Z5L 4WEH10F20B/6EG24NTZ4

4WE6L61B/CW220-50NDKL 4WEH10F20B/6EG24NTZ5

4WE6L61B/CW220-50NDL 4WEH10F20B/6EG24NTZ5L

4WE6L61B/CW220-50NK4 4WEH10F20B/6EG24NZ4

4WE6L61B/CW220-50NZ5 4WEH10F20B/6EG24NZ5

4WE6L61B/CW220-50NZ5L 4WEH10F20B/6EG24NZ5L

4WE6M50B/AG24N         4WEH10F20B/6EW220-50NETZ4

4WE6M50B/AW220-50N 4WEH10F20B/6EW220-50NETZ5

4WE6M50B/BG24N         4WEH10F20B/6EW220-50NETZ5L

4WE6M50B/BW220-50N 4WEH10F20B/6EW220-50NEZ4

4WE6M61B/CG12N9DKL 4WEH10F20B/6EW220-50NEZ5

4WE6M61B/CG12N9DL 4WEH10F20B/6EW220-50NEZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6M61B/CG12N9K4 4WEH10F20B/6EW220-50NTZ4

4WE6M61B/CG12NDKL 4WEH10F20B/6EW220-50NTZ5

4WE6M61B/CG12NDL 4WEH10F20B/6EW220-50NTZ5L

4WE6M61B/CG12NK4 4WEH10F20B/6EW220-50NZ4

4WE6M61B/CG24N9DKL 4WEH10F20B/6EW220-50NZ5

4WE6M61B/CG24N9DL 4WEH10F20B/6EW220-50NZ5L

4WE6M61B/CG24N9K4 4WEH10G20B/6AW220-50NETZ4

4WE6M61B/CG24NDKL 4WEH10G20B/6AW220-50NETZ5

4WE6M61B/CG24NDL 4WEH10G20B/6AW220-50NETZ5L

4WE6M61B/CG24NK4 4WEH10G20B/6AW220-50NEZ4

4WE6M61B/CW220-50N9DKL 4WEH10G20B/6AW220-50NEZ5

4WE6M61B/CW220-50N9DL 4WEH10G20B/6AW220-50NEZ5L

4WE6M61B/CW220-50N9K4 4WEH10G20B/6AW220-50NTZ4

4WE6M61B/CW220-50N9Z5L 4WEH10G20B/6AW220-50NTZ5

4WE6M61B/CW220-50NDKL 4WEH10G20B/6AW220-50NTZ5L

4WE6M61B/CW220-50NDL 4WEH10G20B/6AW220-50NZ5

4WE6M61B/CW220-50NK4 4WEH10G20B/6AW220-50NZ5L

4WE6P50B/AG24N         4WEH10G20B/6EW220-50NETZ4

4WE6P50B/AW220-50N 4WEH10G20B/6EW220-50NETZ5

4WE6P50B/BG24N         4WEH10G20B/6EW220-50NETZ5L

4WE6P50B/BW220-50N 4WEH10G20B/6EW220-50NEZ4

4WE6P61B/CG12N9DKL 4WEH10G20B/6EW220-50NEZ5

4WE6P61B/CG12N9DL 4WEH10G20B/6EW220-50NEZ5L

4WE6P61B/CG12N9K4 4WEH10G20B/6EW220-50NTZ4

4WE6P61B/CG12N9Z4 4WEH10G20B/6EW220-50NTZ5

4WE6P61B/CG12N9Z5 4WEH10G20B/6EW220-50NTZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6P61B/CG12N9Z5L 4WEH10G20B/6EW220-50NZ4

4WE6P61B/CG12NDKL 4WEH10G20B/6EW220-50NZ5

4WE6P61B/CG12NDL 4WEH10G20B/6EW220-50NZ5L

4WE6P61B/CG12NK4 4WEH10H20B/6EG24NETZ4

4WE6P61B/CG12NZ4 4WEH10H20B/6EG24NETZ5

4WE6P61B/CG12NZ5 4WEH10H20B/6EG24NETZ5L

4WE6P61B/CG12NZ5L 4WEH10H20B/6EG24NEZ4

4WE6P61B/CG24N9DKL 4WEH10H20B/6EG24NEZ5

4WE6P61B/CG24N9DL 4WEH10H20B/6EG24NEZ5L

4WE6P61B/CG24N9K4 4WEH10H20B/6EG24NTZ4

4WE6P61B/CG24N9Z4 4WEH10H20B/6EG24NTZ5

4WE6P61B/CG24N9Z5 4WEH10H20B/6EG24NTZ5L

4WE6P61B/CG24N9Z5L 4WEH10H20B/6EG24NZ4

4WE6P61B/CG24NDKL 4WEH10H20B/6EG24NZ5

4WE6P61B/CG24NDL 4WEH10H20B/6EG24NZ5L

4WE6P61B/CG24NK4 4WEH10H20B/6EW220-50NETZ4

4WE6P61B/CG24NZ4 4WEH10H20B/6EW220-50NETZ5

4WE6P61B/CG24NZ5 4WEH10H20B/6EW220-50NETZ5L

4WE6P61B/CG24NZ5L 4WEH10H20B/6EW220-50NEZ4

4WE6P61B/CW220-50N9DKL 4WEH10H20B/6EW220-50NEZ5

4WE6P61B/CW220-50N9DL 4WEH10H20B/6EW220-50NEZ5L

4WE6P61B/CW220-50N9K4 4WEH10H20B/6EW220-50NTZ4

4WE6P61B/CW220-50N9Z4 4WEH10H20B/6EW220-50NTZ5

4WE6P61B/CW220-50N9Z5 4WEH10H20B/6EW220-50NTZ5L

4WE6P61B/CW220-50N9Z5L 4WEH10H20B/6EW220-50NZ4

4WE6P61B/CW220-50NDKL 4WEH10H20B/6EW220-50NZ5

4WE6P61B/CW220-50NDL 4WEH10H20B/6EW220-50NZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6P61B/CW220-50NK4 4WEH10J20B/6EG24NETZ4

4WE6P61B/CW220-50NZ4 4WEH10J20B/6EG24NETZ5

4WE6P61B/CW220-50NZ5 4WEH10J20B/6EG24NETZ5L

4WE6P61B/CW220-50NZ5L 4WEH10J20B/6EG24NEZ4

4WE6Q61B/CG12N9DKL 4WEH10J20B/6EG24NEZ5

4WE6Q61B/CG12N9DL 4WEH10J20B/6EG24NEZ5L

4WE6Q61B/CG12N9K4 4WEH10J20B/6EG24NTZ4

4WE6Q61B/CG12N9Z4 4WEH10J20B/6EG24NTZ5

4WE6Q61B/CG12N9Z5 4WEH10J20B/6EG24NTZ5L

4WE6Q61B/CG12N9Z5L 4WEH10J20B/6EG24NZ4

4WE6Q61B/CG12NDKL 4WEH10J20B/6EG24NZ5

4WE6Q61B/CG12NDL 4WEH10J20B/6EG24NZ5L

4WE6Q61B/CG12NK4 4WEH10K20B/6AG24NETZ4

4WE6Q61B/CG12NZ4 4WEH10K20B/6AG24NETZ5

4WE6Q61B/CG12NZ5 4WEH10K20B/6AG24NETZ5L

4WE6Q61B/CG12NZ5L 4WEH10K20B/6AG24NEZ4

4WE6Q61B/CG24N9DKL 4WEH10K20B/6AG24NEZ5

4WE6Q61B/CG24N9DL 4WEH10K20B/6AG24NEZ5L

4WE6Q61B/CG24N9K4 4WEH10K20B/6AG24NTZ4

4WE6Q61B/CG24N9Z4 4WEH10K20B/6AG24NTZ5

4WE6Q61B/CG24N9Z5 4WEH10K20B/6AG24NTZ5L

4WE6Q61B/CG24N9Z5L 4WEH10K20B/6AG24NZ4

4WE6Q61B/CG24NDKL 4WEH10K20B/6AG24NZ5

4WE6Q61B/CG24NDL 4WEH10K20B/6AG24NZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6Q61B/CG24NK4 4WEH10K20B/O6EW220-50NETZ4

4WE6Q61B/CG24NZ4 4WEH10K20B/O6EW220-50NETZ5

4WE6Q61B/CG24NZ5 4WEH10K20B/O6EW220-50NETZ5L

4WE6Q61B/CG24NZ5L 4WEH10K20B/O6EW220-50NEZ4

4WE6Q61B/CW220-50N9DKL 4WEH10K20B/O6EW220-50NEZ5

4WE6Q61B/CW220-50N9DL 4WEH10K20B/O6EW220-50NEZ5L

4WE6Q61B/CW220-50N9K4 4WEH10K20B/O6EW220-50NTZ4

4WE6Q61B/CW220-50N9Z4 4WEH10K20B/O6EW220-50NTZ5

4WE6Q61B/CW220-50N9Z5 4WEH10K20B/O6EW220-50NTZ5L

4WE6Q61B/CW220-50N9Z5L 4WEH10K20B/O6EW220-50NZ4

4WE6Q61B/CW220-50NDKL 4WEH10K20B/O6EW220-50NZ5

4WE6Q61B/CW220-50NDL 4WEH10K20B/O6EW220-50NZ5L

4WE6Q61B/CW220-50NK4 4WEH10K20B/OF6AW220-50NETZ4

4WE6Q61B/CW220-50NZ4 4WEH10K20B/OF6AW220-50NETZ5

4WE6Q61B/CW220-50NZ5 4WEH10K20B/OF6AW220-50NETZ5L

4WE6Q61B/CW220-50NZ5L 4WEH10K20B/OF6AW220-50NEZ4

4WE6R61B/CG12N9DKL 4WEH10K20B/OF6AW220-50NEZ5

4WE6R61B/CG12N9DL 4WEH10K20B/OF6AW220-50NEZ5L

4WE6R61B/CG12N9K4 4WEH10K20B/OF6AW220-50NTZ4

4WE6R61B/CG12N9Z4 4WEH10K20B/OF6AW220-50NTZ5

4WE6R61B/CG12N9Z5 4WEH10K20B/OF6AW220-50NTZ5L

4WE6R61B/CG12N9Z5L 4WEH10K20B/OF6AW220-50NZ4

4WE6R61B/CG12NDKL 4WEH10K20B/OF6AW220-50NZ5

4WE6R61B/CG12NDL 4WEH10K20B/OF6AW220-50NZ5L

4WE6R61B/CG12NK4 4WEH10K20B/OF6EG24NETZ4

4WE6R61B/CG12NZ4 4WEH10K20B/OF6EG24NETZ5

4WE6R61B/CG12NZ5 4WEH10K20B/OF6EG24NETZ5L

北京华德液压全系列 具体型号

北京华德换向阀部分型号如下：

4WE6R61B/CG12NZ5L 4WEH10K20B/OF6EG24NEZ4

4WE6R61B/CG24N9DKL 4WEH10K20B/OF6EG24NEZ5

4WE6R61B/CG24N9DL 4WEH10K20B/OF6EG24NEZ5L

4WE6R61B/CG24N9K4 4WEH10K20B/OF6EG24NTZ4

4WE6R61B/CG24N9Z4 4WEH10K20B/OF6EG24NTZ5

4WE6R61B/CG24N9Z5 4WEH10K20B/OF6EG24NTZ5L

4WE6R61B/CG24N9Z5L 4WEH10K20B/OF6EG24NZ4

4WE6R61B/CG24NDKL 4WEH10K20B/OF6EG24NZ5

4WE6R61B/CG24NDL 4WEH10K20B/OF6EG24NZ5L

4WE6R61B/CG24NK4 4WEH10L20B/6AG24NETZ4

4WE6R61B/CG24NZ4 4WEH10L20B/6AG24NETZ5

4WE6R61B/CG24NZ5 4WEH10L20B/6AG24NETZ5L

4WE6R61B/CG24NZ5L 4WEH10L20B/6AG24NEZ4

4WE6R61B/CW220-50N9DKL 4WEH10L20B/6AG24NEZ5

4WE6R61B/CW220-50N9DL 4WEH10L20B/6AG24NEZ5L

4WE6R61B/CW220-50N9K4 4WEH10L20B/6AG24NTZ4

4WE6R61B/CW220-50N9Z4 4WEH10L20B/6AG24NTZ5

4WE6R61B/CW220-50N9Z5 4WEH10L20B/6AG24NTZ5L

4WE6R61B/CW220-50N9Z5L 4WEH10L20B/6AG24NZ4

4WE6R61B/CW220-50NDKL 4WEH10L20B/6AG24NZ5

4WE6R61B/CW220-50NDL 4WEH10L20B/6AG24NZ5L

4WE6R61B/CW220-50NK4 4WEH10L20B/6AW220-50NETZ4

4WE6R61B/CW220-50NZ4 4WEH10L20B/6AW220-50NETZ5

4WE6R61B/CW220-50NZ5 4WEH10L20B/6AW220-50NETZ5L

调速回路故障原因分析 
调速回路的功能是调定执行元件的工作速度。改变输入执行元件的流量、液压缸的有效工作面积或液压马达的排量均可以达到调速的目的，但改变液压缸的有效工作面积往往会受到负载等其他因素的制约，改变排量对于变量液压马达容易实现，但对定量马达则不易实现，而使用普遍的方法是通过改变输入执行元件的流量来达到调速的目的。目前，液压系统中常用的调速方式有以下3种。

(1)节流调速：用定量泵供油，由流量控制阀改变输入执行元件的流量来调节速度。其主要优点是速度稳定性好，主要缺点是节流损失和溢流损失较大、发热多、效率较低。

(2)容积调速；通过改变变量泵或（和）变量马达的排量来调节速度。其主要优点是无节流损失和溢流损失、发热较小、效率较高，其主要缺点是速度稳定性较差。

(3)容积节流调速：用能够自动改变流量的变量泵与流量控制阀联合来调节速度。其主要优点是有节流损失、无溢流损失、发热较低、效率较高。
速度调节是 液压系统的重要内容，执行机构速度不正常，液压机械就无法工作。速度控制系统主要故障及其产生原因可归结为以下几个方面。

1．执行机构（液压缸、液压马达）无小进给的主要原因

(1)节流阀的节流口堵塞，导致无小流量或小流量不稳定。

(2)调速阀中定差式减压阀的弹簧过软，使节流阀前后压差过低，导致通过调速阀的小流量不稳定。

(3)调速阀中减压阀卡死，造成节流阀前后压差随外载荷而变。经常见到的是由于小进给时载荷较小，导致小进给量增大。

2．载荷增加时进给速度显著下降的主要原因

(1)液压缸活塞或系统中某个或几个元件的泄漏随载荷、压力增高而显著加大。

(2)调速阀中的减压阀卡死于打开位置，则载荷增加时通过节流阀的流量下降。

(3)液压系统中油温升高，油液黏度下降，导致泄漏增加。

3．执行机构爬行的主要原因

(1)系统中进入空气。

(2)由于导轨润滑不良，导轨与液压缸轴线不平行，活塞杆密封压得过紧，活塞杆弯曲变形等原因，导致液压缸工作行程时摩擦阻力变化较大而引起爬行。

(3)在进油节流调速系统中，液压缸无背压或背压不足，外载荷变化时，导致液压缸速度变化。

(4)液压泵流量脉动大，溢流阀振动造成系统压力脉动大，使液压缸输入压力油波动而引起爬行。

(5)节流阀的阀口堵塞，系统泄漏不稳定，调速阀中减压阀不灵活，造成流量不稳定而引起爬行。

感谢每一位阅读本文的朋友，您们的理解与