With the rapid development of industrial automation, hydraulic robotic arms have been widely used in manufacturing, logistics, construction and other fields due to their powerful load capacity and accurate control performance. However, the complex structure and high-pressure working environment of hydraulic robotic arms also require higher maintenance and upkeep. To ensure the operation of hydraulic robotic arms and extend their service life, the following are some key maintenance techniques.

　　1. Regularly check the quality of hydraulic oil

　　Hydraulic oil is the core working medium of hydraulic robotic arms, and its quality directly affects the performance and lifespan of the robotic arm. Therefore, it is crucial to regularly check the condition of hydraulic oil. Maintenance personnel should check the cleanliness, viscosity, and oil level of hydraulic oil every month to ensure that the oil is not oxidized. If the oil is found to be turbid, has impurities, or has abnormal viscosity, it should be replaced in a timely manner. In addition, the replacement cycle of hydraulic oil is generally 6 months to 1 year, and the specific time should be adjusted according to the frequency of equipment use and working environment.

　　2. Keep the hydraulic system clean

　　Hydraulic systems require high cleanliness, and even small impurities can cause damage to hydraulic pumps, valves, and seals. Therefore, maintenance personnel should regularly clean the exterior and interior of the hydraulic system. When replacing hydraulic oil or filter element, it is necessary to ensure the cleanliness of the operating environment and avoid impurities such as dust and metal shavings from entering the system. At the same time, the oil tank, pipelines, and joints of the hydraulic system should be regularly inspected to ensure no leakage or corrosion.

　　3. Regularly replace the filter element

　　The filter element in the hydraulic system is a key barrier to prevent impurities from entering the hydraulic components. As the usage time increases, the filter element will gradually become clogged, leading to a decrease in hydraulic system pressure and efficiency. Therefore, the filter element should be replaced regularly, and it is recommended to check it every 3 months and replace it every 6 months. When replacing the filter element, choose the original filter element that matches the equipment to avoid using inferior products.

　　4. Check the hydraulic cylinder and seals

　　The hydraulic cylinder is the core executing component of the hydraulic robotic arm, and the state of its seal directly affects the accuracy and stability of the robotic arm. Maintenance personnel should regularly inspect the surface of the piston rod of the hydraulic cylinder for smoothness, scratches, or corrosion, and also check whether the seals are aging, worn, or leaking. If damaged seals are found, they should be replaced in a timely manner to avoid hydraulic oil leakage causing insufficient system pressure or environmental pollution.

　　5. Lubricate moving parts

　　The moving parts of hydraulic robotic arms, such as joints, bearings, and guide rails, require regular lubrication to reduce friction and wear. Maintenance personnel should select appropriate lubricants according to the requirements of the equipment manual and lubricate them according to the prescribed cycle. Excessive or insufficient lubrication can cause damage to equipment, so it is necessary to control the appropriate and timely lubrication.

　　6. Monitoring system pressure and temperature

　　The working pressure and temperature of a hydraulic robotic arm are important parameters for its normal operation. Maintenance personnel should regularly check the pressure gauge of the hydraulic system to ensure that the system pressure is within the normal range. If abnormal pressure is found, the cause should be promptly investigated, which may be a malfunction in the hydraulic pump, valves, or pipelines. In addition, the working temperature of the hydraulic system should also be controlled within a reasonable range. Excessive temperature can accelerate the oxidation of hydraulic oil and reduce its lubrication performance. If abnormal temperature is found, check whether the cooling system is working properly.

　　7. Regular calibration and debugging

　　The accuracy of hydraulic robotic arms gradually decreases over time, so regular calibration and debugging are essential. Maintenance personnel should conduct a semi annual inspection of the positioning accuracy, repeatability, and load capacity of the robotic arm, and make necessary adjustments based on the inspection results. Calibration and debugging should be carried out by professionals to ensure the performance of the equipment is restored to its original state.

　　8. Train operators

　　The maintenance of hydraulic robotic arms is not only the responsibility of technicians, but also the daily usage habits of operators have a significant impact on the lifespan of the equipment. Therefore, enterprises should regularly train operators to master the basic operating norms and maintenance knowledge of equipment.

　　9. Establish and maintain records

　　Establishing detailed maintenance records is an important guarantee for the long-term stable operation of hydraulic robotic arms. Maintenance personnel should record the time, content, and results of each inspection, maintenance, and repair in order to promptly identify potential issues with the equipment and develop corresponding maintenance plans. Maintenance records can also provide important references for equipment fault diagnosis, reducing repair time and costs.

　　10. Preventive maintenance

　　In addition to daily maintenance, enterprises should also develop preventive maintenance plans and conduct comprehensive inspections and maintenance of hydraulic robotic arms on a regular basis. Preventive maintenance can detect potential problems with equipment in advance, avoiding production interruptions and losses caused by sudden failures. The frequency of preventive maintenance should be determined based on the usage of the equipment and the working environment, and it is usually recommended to conduct it every six months or once a year.

　　As an important equipment in modern industrial production, the maintenance and upkeep of hydraulic robotic arms directly affect the production efficiency and equipment lifespan of enterprises. By regularly checking the quality of hydraulic oil, keeping the system clean, replacing filter elements, lubricating moving parts, monitoring system parameters, and other measures, enterprises can ensure the operation of hydraulic robotic arms, extend their service life, and reduce maintenance costs. At the same time, enterprises should also attach importance to the training of operators and preventive maintenance, providing comprehensive guarantees for the long-term stable operation of equipment.

　　The maintenance of hydraulic robotic arms is a systematic and meticulous task that requires the joint efforts of technicians, operators, and managers. Only through scientific maintenance and management can the performance advantages of hydraulic robotic arms be fully utilized, providing strong support for the production and development of enterprises.