马祖奇微型油泵MARZOCCHI齿轮泵U0.25R18/24/30/36/48/60KX液压泵






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U0.25R18 是一款微型、高压、单向旋转的外啮合齿轮液压泵(非马达),专为小流量、中高压精密液压系统设计。
一、型号含义(U0.25R18)
- U:系列代号(微型高压齿轮泵 / 马达系列)
- 0.25:理论排量 0.25 cm³/rev (cc/rev)
- R:单向顺时针旋转(Right-handed,从轴伸端看)
- 18:额定压力 18 MPa (180 bar)
二、核心技术参数
1. 排量与流量
- 理论排量:0.25 cm³/rev
- 额定转速:1450 rpm(标准工况)
- 理论流量:0.36 L/min(@1450 rpm)
- 转速范围:500 ~ 5000 rpm(连续)
- 最高转速:6000 rpm(短时)
2. 压力性能
- 额定工作压力:180 bar (18 MPa)
- 峰值压力:210 bar (21 MPa)
- 连续背压:≤ 5 bar
- 泄油压力:≤ 1.2 bar(绝对压力)
3. 功率与效率
- 额定输入功率:~ 0.11 kW(@180 bar, 1450 rpm)
- 容积效率:≥ 91%(额定工况)
- 机械效率:≥ 88%
- 总效率:≥ 80%
4. 结构与材质
- 结构形式:外啮合齿轮泵(2 齿轮,固定排量)
- 壳体:高强度铝合金(轻量化、紧凑)
- 齿轮 / 轴:渗碳淬火合金钢(高精度磨齿、耐磨)
- 轴承:微型高压滑动轴承
- 密封:丁腈橡胶 NBR/FKM(耐油、耐高温)
- 旋转方向:单向(R = 顺时针)
- 安装法兰:微型标准法兰(2/4 孔安装)
- 轴伸形式:圆柱平键 / 花键轴(φ6~φ8mm)
- 油口形式:微型螺纹(G1/8、UNF 1/4")
- 重量:~ 0.8 kg(标准型)
5. 介质与环境
- 适用介质:矿物液压油(L-HM32/46)、合成油
- 介质粘度:10 ~ 80 mm²/s (cSt)
- 工作温度:-20℃ ~ +90℃
- 清洁度:NAS 9 级以上(建议≤10μm 过滤)
三、结构特点
- 超微型紧凑:体积小、重量轻,适配空间极受限设备
- 高压小流量:18MPa 高压,0.25cc 排量,精准微流量输出
- 单向稳定:R 型单向旋转,结构简单、可靠性高、寿命长
- 低噪音低脉动:精密齿轮啮合,运转平稳、振动小
- 耐磨长寿命:合金钢齿轮 + 高压轴承,抗磨损、连续稳定
- 易安装维护:标准微型接口,通用互换、维护简便
四、典型应用场景
- 精密液压系统:精密夹具、伺服液压、微量润滑系统
- 医疗器械:医疗设备液压驱动、精密给药、手术器械
- 航空航天:机载微型液压、飞行器控制、精密作动
- 汽车工业:自动变速箱控制、液压制动、座椅调节
- 精密机床:微量润滑、主轴冷却、液压夹紧
- 仪器仪表:测试设备、液压校准、压力源
- 小型机器人:关节驱动、精密执行、微型液压动力
五、安装与使用要点
- 旋转方向:R 为顺时针(轴伸端看),不可反转
- 泄油口:单独回油箱,无压回油,禁止背压
- 油口连接:严格区分进油口(低压)、出油口(高压)
- 润滑保护:启动前注油润滑,避免干磨
- 压力控制:系统压力≤180 bar连续工作
- 过滤精度:≤10μm,防止杂质磨损
六、同系列替代型号
- U0.15R18(排量 0.15 cc/rev,更小流量)
- U0.25L18(L = 逆时针旋转,同排量)
- U0.25R21(压力 21 MPa,加强型)
- U0.35R18(排量 0.35 cc/rev,更大流量)
七、选型提示
- 排量匹配:0.25 cc/rev,适配微流量需求
- 压力等级:180 bar额定,中高压精密系统
- 旋转方向:R = 单向顺时针
- 安装空间:微型结构,超紧凑设备首选
- 工况适配:高速、微流量、高压精密场景
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