Excavator Hydraulic System Parts

mini excavator final drive
1. Integrated structure with Axial Piston Motor and Reducer.
2. High reliability - all main parts are made by Automatic CNC producing line.
3. High efficiency - the axial piston motor maintains high efficiency.
4. Compact in volume and low noise.
5. Two-speed function, exchange in high speed and strong torque.
6. Parking brake - included as standard for safety
7. Exchangeable: same flange dimensions with original final drive.

Advantages of mini excavator travel motor：
Rigorous, precise, multi-level security protection
Efficient and stable, with a wide range of transmission ratios
Low noise, longer service life than peers
Patented technology, trustworthy
Strict quality control, 100% quality assurance

The advantages of final drive komatsu pc200:
1.Coexistence of high quality and competitive prices
2.Long service life
3.Easy to install
4.High yield
5.Good performance

Product feature of cat 312 final drive：
1. Standard product design
2. High quality material selection
3. Advanced imported manufacture & testing equipment
4. Advanced manifacturing process and production technology
5. in the line with global standards
6. By long time testing, proved to be good condition

1. The hitachi excavator final drive described are of the standard type. Other design variants with different ratio, dimensions, and power characteristics are available if so requested for specific applications.
2. The hitachi excavator final drive have been widely applied in crawler excavator, crawler cranes, road milling machine, road header, road roller, track vehicles, aerial platform, and self-propel drill rigs.
3.The hitachi excavator final drive not only have been used by domestic customer such as SANY, XCMG, ZOOMLION, but also have been exported to Southeast Asia, Middle East, India, South Korea, Netherlands, Germany and Russia and so on.

hitachi ex60 final drive Troubleshooting-General Precautions
• If you experience an abnormal operation of the hitachi ex60 final drive, think all working circuit
elements that could potentially effect the Track Drive Motor's performance.
• If deemed to disassemble the hitachi ex60 final drive, it is critical to do so in a clean environment, to ensure no miss or broken during the reassembly process.
• When disassembly, pls note that the inner hydraulic components of the Track Drive Motor are precision manufactured and as a result must be handled with care to avoid irreversible damage.

hitachi ex30 final drive Installation Precautions：
Check the piping and flexible hose is correctly installed.
Ensure correct direction of rotation of the hitachi ex30 final drive is achieved.
Check for leakage from all motor parts.
Ensure the system is operating within the specified working temperature.
Check the pressure is operating within specified range.

How to diagnose whether the m5x130 swing motor is abnormal?
To judge whether the m5x130 swing motor is abnormal, it can be judged by disassembling the slewing motor separately. Turn off the engine first, remove only the fixing bolts of the m5x130 swing motor, separate the main shaft i of the rotary motor from the planetary gear of the rotary reducer for a certain distance, restart the engine, and operate the motor to make a rotary motion to perform evaporative idling. Since the slewing motor has been separated from the slewing reducer, if the slewing motor runs smoothly without any abnormal noise, it means that the slewing motor is faultless.

The cat 320d slewing motor is the key component of the excavator slewing mechanism. Motor swing cat 320d converts the oil pressure provided by the main pump into mechanical energy and inputs it to the reducer; cat 320d swing motor working performance will directly affect the slewing speed, driving torque, slewing speed of the whole machine. Parking and parking brakes are the keys to determining the productivity of the entire machine.
After the excavator works for a long time, the rotary motor often has the phenomenon of weak rotation and unstable rotation. At this time, it is necessary to replace the internal parts according to the test results.

The komatsu pc200 swing motor is equipped with the following features:
①The braking device is used to absorb the shock generated when the rotation stops.
②Relief valve to prevent overload damage to the komatsu pc200 swing motor and deceleration mechanism.
③ Oil charge valve, used to prevent cavitation during rotating operation.
④ When the rotation stops, the anti-reverse valve that generates the reaction force (the reaction force generated by the inertial force) is eliminated