XHZC550T4

GFB hydraulic transmission device instruction manual

I. Overview:

The GFB series transmission device is composed of various hydraulic valve blocks, hydraulic motors, planetary reducers and other components. It also has the characteristics of high efficiency when starting and working, less energy consumption, low noise, compact size, beautiful appearance, and good economy. It can be widely used in railway and truck cranes, ships, oil fields, coal mines, ports and other equipment. 

2. Matters needing attention:

1. Please read this manual carefully before ordering, and let us know the actual working conditions. Our factory can assist in model selection and establish customer files for after-sales service.  

2. The hydraulic rotary device can rotate in both directions, and the user can realize it only by exchanging the oil inlet and outlet of the hydraulic motor. 

3. All products are allowed to be installed in any direction, but it should be noted that the leakage port of the hydraulic motor should be located above the horizontal plane of the shaft center. If the customer requires that the shaft output direction is upward or higher than the horizontal direction, please specify when ordering, and our factory will provide the leakage port A check valve is added to prevent the lack of lubricating oil in the housing. 

4. The shell pressure of all products does not exceed 0.3MPa. If you have special requirements, please contact our factory. 

5. Working fluid: The working oil of the hydraulic motor is wear-resistant hydraulic oil. The ideal working oil temperature is 30°C~50°C and the allowable oil temperature is -20°C~80°C. In special cases, low-condensation hydraulic oil should be used. The ideal hydraulic oil viscosity is 40~60 centistokes. 

6. Filtration precision of oil used in hydraulic motors: 25 micron or better filtration precision is recommended. 

7. Please add two-thirds of the volume of gear oil to the gearbox before use, and fill the hydraulic motor with hydraulic oil.

8. After 200 hours of use for the first time, please replace the gear oil and hydraulic oil. The brand of the oil is the same as the original one. Replace every six months thereafter.

小型吊机液压马达是液压传动系统中的实行元器件，它将来自于液压油泵的液压机能转化成旋转运作的机械动能，进而推动负载完成工作中。

该马达通常可分成快速和低速档两类。额定值转速高过500rpm的常视作快速液压的马达，关键方式有传动齿轮式、风冷式、叶面式、径向柱塞泵式。其优点是转速较高，功率高，惯性力矩小，排量也小，运行、制动系统、变速及换相便捷，但输出扭矩并不大，通常几十到几十个牛米（N.m），非常多的情形下无法立即达到工程项目负荷对扭矩的规定，必须配备机械设备降速组织，因而，应用上得到一定的限定。

额定值转速小于500rpm的常被称作低速档电机。低速档电机排量大，体积大。当转速低于每分钟几转甚至零点几转时，它仍然可以平稳输出数千甚至数万元牛米（N.m）的扭矩。因此，液压回转传动装置通常被称为低速档大扭矩液压电机。具体方法包括切向柱塞泵型液压电机，如多功能内曲线图柱塞式液压电机、曲柄连杆式、负压均衡式等。它主要用于立即联接并推动负荷，不用降速组织，且运行、加快时间较短，特性好，因为輸出扭矩大，因而在工业设备中获得普遍的运用。