R901120820 PVQ54-1X/193-122RB15UUMC 力士乐油泵 叶片泵

上海韦米机电设备有限公司代理经销美国PARKER(派 克)液压元件，德国BOSCH REXROTH(博世-REXROTH)气动液压元件，美国EATON VICKERS(伊顿-威格士)液压元件，意大利ATOS(阿托斯)液压元件，德国HYDAC(贺德克)电子器件，奥地利(B&R)贝加莱驱动模块，美国bently本特利传感器探头，德国西门子数控产品
优势特价供应经销德国BOSCH REXROTH(博世-REXROTH)液压元件：柱塞泵A10VSO、电磁阀4WE、溢流阀DBW、节流阀Z2S、液压泵PV7、压力继电器HED、博世放大器比例阀0811、齿轮泵0510等系列大量特价供应;
奥地利贝加莱(B&R)2003系统、2005系统、Automation Panel AP800\AP900\PC\PC APC620、Mobile Pane、Panel PC、Power Pane、X20系统、X67 IO、变频器、电源模块、附件、紧凑型IO、三相同步电机、伺服驱动器、网络和现场总线模块等工业产品配件大量优势供应
德国西门子(siemens)自动化与数控驱动、1FK电机、6SN1145系列电源、6FC5251系列伺服模块、6SN1111系列西门子、6FC5210系列模块等自动化与数控驱动模块大量供应
REXROTHREXROTH液压泵
液压泵的性能参数：
(1)压力 单作用变量液压泵的工作压力一般不**过17.5MPa。双作用定量液压泵的工作压力现已达28～30MPa，略低于齿轮泵。凸轮转子液压泵的工作压力可达21MPa。
(2)排量的估算及范围 液压泵的排量主要取决于定子和转子的宽度、定子的内径及偏心距（单作用液压泵）、定子滑道曲面的长、短半径（双作用液压泵）及叶片数、叶片厚度、叶片倾角等。
(3)转速 常用单作用变量泵的转速约3000r/min，其同时还有转速的限制(一般为600～900r/min)，以保证有足够的离心力可靠地甩出叶片。小排量的双作用定量液压泵的转速达8000～10000r/min，但一般产品只有1500～2000r/min，一般低于齿轮泵。
(4)效率 单作用定量液压泵在额定工况下的容积效率可达92%；双作用定量液压泵在额定工况下的容积效率可**过94%，均略低于齿轮泵，但液压泵的机械效率一般较高。故两者的总效率相差无几。
(5)寿命 由于轴承负荷较小和配流盘受力均衡等原因，高压液压泵的使用寿命一般均比齿轮泵长，可达5000h以上。
(6)噪声 单作用变量液压泵的噪声比较高，仅略低于变量柱塞泵。双作用定量液压泵的噪声很低，与内齿轮泵水平相当。
(7)功率密度 由于双作用液压泵单位结构体积中可设置的工作容积较大（“双作用”的特点），因此在排量相同时，尺寸有可能比齿轮泵更小；但后者许用压力和转速较高，且外齿轮泵多用铝合金壳体，故在功率密度方面仍然是齿轮泵占优势。
(8)主要结构参数 对于双作用定量液压泵，定子滑道曲面大、小半径之比一般为R/r=1.06～1.15。转、定子宽度B可减少沿端面的泄漏占总输出的比例，对提高容积效率有利，但B值过大时将使配流窗口中流速过高，压力损失，对于单作用泵还会使轴承受力恶化，一般为B/r=0.45～1。例如，为25～200L/min的YB系列液压泵B=20～40。单作用泵的偏心距一般为e/D=0.025～0.03。
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REXROTHREXROTH液压泵
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REXROTHREXROTH液压泵
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