DBETBEX-1X/180G24K31F1M /力士乐比例阀 081140207

比例阀伺服阀的主阀一般来说和换向阀一样是滑阀结构，只不过阀芯的换向不是靠电磁铁来推动，而是靠前置级阀输出的液压力来推动，这一点和电液换向阀比较相似，只不过电液换向阀的前置级阀是电磁换向阀，而伺服阀的前置级阀是动态特性比较好的喷嘴挡板阀或射流管阀。也就是说，伺服阀的主阀是靠前置级阀的输出压力来控制的，而前置级阀的压力则来自于伺服阀的入口p，假如p口的压力不足，前置级阀就不能输出足够的压力来推动主阀芯动作。而我们知道，当负载为零的时候，如果四通滑阀完全打开，p口压力=t口压力+阀口压力损失（忽略油路上的其它压力损失），如果阀口压力损失很小，t口压力又为零，那么p口的压力就不足以供给前置级阀来推动主阀芯，整个伺服阀就失效了。所以伺服阀的阀口做得偏小，即使在阀口全开的情况下，也要有一定的压力损失，来维持前置级阀的正常工作。伺服阀其实缺点极多：能耗浪费大、容易出故障、抗污染能力差、昂贵等等等等，好处只有一个：动态性能是所有液压阀中的。就凭着这一个优点，在很多对动态特性要求高的场合不得不使用伺服阀，如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的，基本上都是比例阀的天下了。一般说来，好像伺服系统都是闭环控制，比例多用于开环控制；其次比例阀类型要多，有比例压力、流量控制阀等，控制比伺服要灵活一些。从他们内部结构看，伺服阀多是零遮盖，比例阀则有一定的死区，控制精度要低，响应要慢。但从发展趋势看，特别在比例方向流量控制阀和伺服阀方面，两者性能差别逐渐在缩小，另外比例阀的成本比伺服阀要低许多，抗污染能力也强！

技术特性：斜盘结构轴向柱塞变量泵，适用于闭式回路的静液传动。流量与驱动转速和排量成比例可无级调节。随着斜盘摆动角度增加，流量从零至值。当斜盘摆动经过零位时，液流方向平稳换向。良好适应性的多种形式控制和调节功能。高压侧的两个溢流阀保护液压传动元件（泵和马达）不过载，高压溢流阀同时作为补油压阀。内置辅助泵作为补油和控制油泵。通过内装的补油溢流阀限制补油压力。使用于矿山、冶金、船舶、建筑、工程、农业、林业、产业、工业等各种领域。公司现有型号德国力士乐A4VG-125泵的配件主轴080121-001#,
轴向柱塞泵E-A4VSO250EO2/30R-VPB25N00-SO3,轴向柱塞泵E-A4VSO250EO2/30R-VPB25N00-SO3,
柱塞泵A4VSO180DR/30R-FPB13N00,恒压变量泵E-A4VS0125DR/22R-VPB13N00,
柱塞泵A4VSO180DR/30R-FPB13N00,柱塞泵A4VS0180LR2G/30R-PPB13NOO,
柱塞泵A4VSO250LR2D/30R-PPB13NOO,柱塞泵A4VSO250DR/30R-PPB13NOO,
泵A4VG56EZ2DM1/32-NSC02F003F,柱塞泵A4VS0250DR/30RPPB13N00,
阀柱塞泵A4VTG71HW/32R-NLD10F001S,柱塞泵A4VSG750HD/22R-PPH10NOO,
轴向柱塞泵A4VS07IDR/3XR,轴向柱塞泵A4VS0125DR/3XR,
柱塞泵A4VG90EP2DT1/32R-NAF02F00,柱塞泵A4VSO-250E02/30R-PPB13N00,
柱塞泵A4VSO-250DR/30R-PPB13N00,液压马达A4VG40EP4DMT1/32L-NSC02F015PH,柱塞泵A4VG71DWDMT2/23L-NZF02F041D,泵A4VG250HD1D1/32LNZD10F001S,柱塞泵A4VS0125DR30R-PPB13N00,0822 120 0/085,0820 055 101,0820 032 025,0820 232 002,0820 225 102,0820 024 990,
力士乐(BOSCH-REXROTH)轴向柱塞泵型号如下:
柱塞泵A4VG90HWD1/32R-NZF001S,柱塞泵A4VTG90HW/32R-NLD10F001S,轴向柱塞泵A4VSO125DR/PPB13NOO,变量轴向柱塞泵A4VSO180DR/30R-PPB13N00,变量轴向柱塞泵A4VSO125DR/30R-PPB13N00,柱塞泵A4VS0125DR/10R-PPB13N00,柱塞泵A4VS071DR/10R-PPB13N00,柱塞泵A4VS0125DR/22R,变量泵A4VSO250EO2/30R-VPB13N00-SO2,柱塞泵A4VG125EP2MT1/32-NZF02F021SH-S,
柱塞泵A4VG125HD1D2/32R-NTF02F691P,柱塞泵A4VG125HD1D2/32R-NSF02F02F021P,
串泵A4VG125HDMT1-32R-NSF02F691S-,柱塞泵（二串泵）A4VG125EP2/32+A10V028DR/31,A4VSO40LR2G/10R-PPB13N00
A4VSO71DFR/10X-PPB13N00
A4VSO71DR/10X-PPB13N00
A4VSO71DRG/10X-PPB13N00
A4VSO71LR2/10R-PPB13N00
A4VSO71LR2D/10R-PPB13N00
A4VSO125DFR/22R-PPB13N00
A4VSO125DR/22R-PPB13N00
A4VSO125DR/22R-VPB13N00
A4VSO125LR2/22R-PPB13N00
A4VSO125LR2G/22R-PPB13N00
A4VSO125LR2N/22R-PPB13N00
A4VSO180LR2N/22R-PPB13N00
A4VSO250DFR/30R-PPB13N00
A4VSO250DR/30R-PPB13N00
A4VSO250DRG/30R-PPB13N00
A4VSO250LR2/30R-PPB13N00
A4VSO250LR2G/30R-PPB13N00
A4VSO250LR2N/30R-PPB13N00
A4VSO180DFR/22R-PPB13N00
A4VSO180DR/22R-PPB13N00
A4VSO180DRG/22R-PPB13N00
柱塞泵 A4VG90HWD1/32R-NZF001S
柱塞泵 A4VTG90HW/32R-NLD10F001S
轴向柱塞泵 A4VSO125DR/PPB13NOO
变量轴向柱塞泵 A4VSO180DR/30R-PPB13N00
变量轴向柱塞泵 A4VSO125DR/30R-PPB13N00
柱塞泵 A4VS0125DR/10R-PPB13N00
柱塞泵 A4VS071DR/10R-PPB13N00
柱塞泵 A4VS0125DR/22R
变量泵 A4VSO250EO2/30R-VPB13N00-SO2
柱塞泵 A4VG125EP2MT1/32-NZF02F021SH-S
柱塞泵 A4VSO250EO2/30R-VPB13N00-SO2
变量轴向柱塞泵 A4VSO180DR/30R-PPB13N00
变量轴向柱塞泵 A4VSO125DR/30R-PPB13N00
油泵 A4VSO180DFR/30R-PPB13N00
柱塞泵 A4VS0180DR/30R-PPB13N00
轴向柱塞泵主泵 A4VS0125DRG/30R-PPB13N00
油泵 A4VS071DR/30R-PPB13N00
德国力士乐A4VG-125泵的配件 主轴 080121-001#
轴向柱塞泵 E-A4VSO250EO2/30R-VPB25N00-SO3
轴向柱塞泵 E-A4VSO250EO2/30R-VPB25N00-SO3
柱塞泵 A4VSO180DR/30R-FPB13N00
恒压变量泵 E-A4VS0125DR/22R-VPB13N00
柱塞泵 A4VSO180DR/30R-FPB13N00
柱塞泵 A4VS0180LR2G/30R-PPB13NOO
柱塞泵 A4VSO250LR2D/30R-PPB13NOO
柱塞泵 A4VSO250DR/30R-PPB13NOO
泵 A4VG56EZ2DM1/32-NSC02F003F
柱塞泵 A4VS0250DR/30RPPB13N00
阀柱塞泵 A4VTG71HW/32R-NLD10F001S
柱塞泵 A4VSG750HD/22R-PPH10NOO
轴向柱塞泵 A4VS07IDR/3XR
轴向柱塞泵 A4VS0125DR/3XR
柱塞泵 A4VG90EP2DT1/32R-NAF02F00
柱塞泵 A4VSO-250E02/30R-PPB13N00
柱塞泵 A4VSO-250DR/30R-PPB13N00
液压马达 A4VG40EP4DMT1/32L-NSC02F015PH
柱塞泵 A4VG71DWDMT2/23L-NZF02F041D
 泵 A4VG250HD1D1/32LNZD10F001S
柱塞泵 A4VS0125DR30R-PPB13N00
柱塞泵 A4VG125HD1D2/32R-NTF02F691P
柱塞泵 A4VG125HD1D2/32R-NSF02F02F021P
串泵 A4VG125HDMT1-32R-NSF02F691S-

4WE6D62/EW230N9K4,4WE6D6X/OFEG24N9K4,4WE6D62/OFEW230N9K4,4WE6D6X/EG24N9DAL/62=CSA,

4WE6D6X/EG24N9DK23L,4WE6D62/EG24N9DL,4WE6D6X/EG24N9K4QMBG24/B12,4WE6D6X/EG24N9K4/V,

4WE6D62/EG110N9K4,4WE6D62/EG110N9K4,4WE6D6X/EG110N9K4/V,4WE6D62/EG220N9K4/V,

4WE6D6X/EG110N9K4/V,4WE6D6X/EG110N9K4,4WE6D62/OFEW110N9K4,4WE6D62/OFEG24N9K,

4WE6D6X/OFEG24N9K4,4WE6D62/OFEG220N9K4,4WE6D70/OFHG24N9K4,4WE6D7X/HG24N9K4,

4WE6D7X/HG24N9K4,4WE6EA6X/EG24N9K4,4WE6E62/EW230N9K4,4WE6E62/EW230N9K4,

4WE6E6X/EG24N9K4,4WE6E62/EG24N9K4,4WE6E62/EG24N9K4,4WE6EB62/EG24N9K4,

4WE6EB62/OFEG24N9K4,4WE6E70/HG24N9K4,4WE6E7X/HG24N9K4,4WE6EA7X/HG24N9K4,

4WE6EB7X/HG24N9K4,Z4WE6E633X/EG24N9K4,4WE6GA6X/EG24N9K4,4WE6GA6X/EW110N9K4,