马祖奇MARZOCCHI齿轮泵GHM2-R-20-E1 GHM2-R-9/12/13/16/22/25/30






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GHM2-R-9 是一款外啮合、固定排量、高压、单向旋转的齿轮式液压马达,专为中高压、中小扭矩、高转速液压系统设计。
一、型号含义(GHM2-R-9)
- GHM2:产品系列代号(高压齿轮马达,第二代结构)
- R:结构 / 旋转方向(单向顺时针旋转 Right-handed,标准进出油口)
- 9:排量规格(理论排量 6.4 cc/rev,对应系列代号 9)
二、核心技术参数
1. 排量与流量
- 理论排量:6.4 cm³/rev (cc/rev)
- 额定转速:1500 rpm(标准工况)
- 理论流量:9.1 L/min(@1500 rpm)
- 转速范围:500 ~ 4000 rpm(连续)
- 最高转速:4500 rpm(短时)
2. 压力性能
- 连续工作压力:250 bar (25 MPa)
- 峰值压力:290 bar (29 MPa)
- 连续背压:≤ 6 bar(单向)
- 泄油压力:≤ 1.5 bar(绝对压力)
3. 扭矩与功率
- 理论扭矩:1.02 Nm/bar(每 bar 压力产生扭矩)
- 额定扭矩:~ 255 Nm(@250 bar)
- 峰值扭矩:~ 296 Nm(@290 bar)
- 额定功率:~ 40 kW(@250 bar, 1500 rpm)
4. 结构与材质
- 结构形式:外啮合齿轮马达(2 齿轮,固定排量)
- 壳体:高强度铝合金(轻量化)
- 端盖 / 法兰:球墨铸铁(高压强度)
- 齿轮 / 轴:渗碳淬火合金钢(耐磨、高强度)
- 轴承:高压滚针轴承 + 滑动轴承组合(高承载)
- 密封:氟橡胶 FKM(耐油、耐高温、长寿命)
- 旋转方向:单向(R = 顺时针)
- 安装法兰:标准欧洲 / SAE 标准法兰(通用安装)
- 轴伸形式:渐开线花键 / 圆柱平键(标准配置)
- 油口形式:螺纹 / 法兰(标准 G1/2 或 UNF)
- 重量:~ 3.2 kg(标准型)
5. 性能与介质
- 容积效率:≥ 93%(额定工况)
- 机械效率:≥ 90%
- 总效率:≥ 84%
- 适用介质:矿物液压油(L-HM32/46/68)、乳化液
- 介质粘度:10 ~ 100 mm²/s (cSt)
- 工作温度:-20℃ ~ +100℃
- 清洁度:NAS 8 级以上(建议≤10μm 过滤)
三、结构特点
- 高压轻量化:铝合金壳体 + 铸铁端盖,兼顾强度与重量
- 高效齿轮:精密磨齿、高重合度、低噪音、高效率
- 高压轴承:组合轴承设计,承受径向 / 轴向高压载荷
- 单向稳定:R 型单向旋转,结构简化、可靠性高、寿命长
- 低泄漏:精密配合 + 高压密封,内泄漏小、容积效率高
- 通用接口:标准法兰 / 油口 / 轴伸,互换性强、易替换
- 抗污染:齿轮结构简单,抗杂质能力优于柱塞马达
- 高转速:最高 4000+rpm,适配高速液压驱动
四、典型应用场景
- 工程机械:小型挖掘机、装载机、叉车的液压马达驱动
- 农业机械:收割机、播种机、喷雾机的行走 / 工作机构
- 工业设备:机床液压系统、注塑机、液压夹具、打包机
- 车辆机械:环卫车、清障车、高空作业车的液压执行器
- 船舶设备:小型船用液压绞车、舱门启闭、舵机驱动
- 特种机械:液压工具、钻机、清扫车、卷扬机
五、安装与使用要点
- 旋转方向:R 为顺时针(从轴伸端看),不可反转
- 泄油口:必须单独回油箱,保持无压,禁止接背压
- 油口连接:严格区分进油口(高压)、回油口(低压)
- 润滑保护:启动前注油润滑,避免干磨损坏轴承
- 压力控制:系统压力≤250 bar连续工作,防止过载
- 过滤精度:≤10μm,防止杂质磨损齿轮与轴承
六、同系列替代型号
- GHM2-R-6(排量 4.5 cc/rev,小扭矩)
- GHM2-R-12(排量 8.3 cc/rev,大扭矩)
- GHM2-L-9(L = 逆时针旋转,同排量)
- GHM2A-R-9(A = 加强型,高压 / 重载)
七、选型提示
- 排量匹配:按流量 / 转速需求选 6.4 cc/rev 排量
- 压力等级:250 bar连续,适配中高压系统
- 旋转方向:R = 单向顺时针,需反转选 L 型
- 安装接口:标准SAE / 欧洲法兰,通用替换性强
- 工况适配:高速中小扭矩场景优先,稳定可靠
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