产品概述

GM系列液压马达是本公司集合多年生产实践经验，在原有 的技术基础上进行了设计改进。使GM系列马达壳体强度增 加，内部动态元件承载能力增强。这一特点使该系列马达具 有很高的连续功率范围。由于机械效率和容积效率高，同时 又减少了内部单位负载力，因此减少了热量产生及与此相关 的负面效应。其主要特点如下：

1、由于活塞与摆缸不存在侧向力，活塞底部设计成静压平衡， 活塞与曲轴之间通过滚动轴承传递扭力，这些均减少了传 力过程中的摩擦损失。因而GM系列液压马达具有很高 的机械效率、高的启动扭矩（启动时机械效率92%以上） 的特点。

2、平面配流器简单可靠，密封性好，泄漏很少。活塞与摆缸 之间用塑料活塞密封无泄漏，因而有很高的容积效率（可达98%）。

3、由于结构上减少了摩擦损失，提高了密封性能，因而低速 稳定性好，可以在10r/min I况下平稳运转，调速范围大（速度调节比可达1000）

4、由于活塞与轴承套通过卡环贴牢不存在间隙，因而该系列 液压马达可以作泵工况下运转，当进油口封闭后马达可在 自由轮工况下高速动转。

5、该系列液压马达压力高，最高压力可达31.5MPao重量轻、 体积小、功率高。

6、由于结构简单，设计合理，采用符合能力大的轴承，因而 工作可靠，寿命长、噪音低，传动轴允许承受径向力，

旋转方向可逆。

Product overview

GM series hydraulic motor is a new type of product of our company, which is based on years practical experience. The design is improved in the foundation on the original technologies. GM hydraulic motor mainly has the following characteristics:

As the piston and the tilt cylinder have no side force ,the piston bottom is designed to be static pressure balance. The torsional force is transferring between the piston and the crankshaft through rolling bearing, so the friction loss during the transferring process of force is reduced. Therefore, GM series hydraulic motor has such features as: very high mechanical efficiency and comparatively high startup torque (mechanical efficiency of over 0.92 during startup).

The plane distributor (patented technology)is simple and reliable with perfect seal performance and almost no leakage. The plastic piston ring is used to seal between the piston and the tilt cylinder, so it has very high volumetric efficiency (can be as high as 0.98).

As the structure of this product has reduced friction loss and enhanced the seal performance, the product has perfect stability at low speed. It can stably run at 10r/min working condition and has big speed regulation range.

As the piston is jointed closely with bearing bushing without any clearance, this series of hydraulic motor can run at pump working condition.

This series of hydraulic motor has high pressure, (the highest pressure can reach 31.5 Mpa) light weight, small bulk and high specific power.

As this series hydraulic motor has simple structure, reasonable design and adopts bearing with big load ability, it can work reliably and has long life and low noise; the transmission shaft allows endure radial load and the rotational direction is reversible.

产品适用范围

    由于GM系列液压马达具有上述一系列特点，故广泛用于塑 料机械，轻工机械、冶金机械、矿山机械、起重运输设备、 重型机械、石油煤矿机械、船舶甲板机械、机床、塑料、地 质钻探设备等各种机械的液压传动系统中。特别适用于提升 绞盘、卷筒机械、各种回转机械驱动、履带和轮子行走机构 的驱动等传动机械中。

Products application range

As GM series hydraulic motor has the above characteristics, it has wide application range. It can be applied in the hydraulic transmission systems of various types of machinery in plastic injection machine, light industry machine, engineering machine, metallurgical equipment, petroleum, coal mine, geological prospecting, railway, ship, environment protection, machine tool and agricultural machine industries.