**Product Specifications:** - **Model Number:** MMA 120 - **Trademark:** Aitel Welder - **Specifications:** CE, ROHS, CCC - **Origin:** Qingdao, China - **HS Code:** 8515390000 **Material Guarantee:** 1. Every material is thoroughly inspected before being stored in the warehouse. 2. High-end international IGBT components are used, such as INFINEON, Fairchild, and SILVERMICRO, ensuring top performance and reliability. **Quality Control System:** 1. Comprehensive checks include material inspection, PCB testing, PCB debugging, and assembly verification. 2. The machines undergo machine debugging, full-load testing, functional testing, and trial welding to ensure optimal performance. 3. Packaging is tested for durability and safety. 4. Our pricing reflects adherence to an international quality system, ensuring consistent standards. **Key Features:** 1. Built to last and perform reliably in industrial welding conditions. 2. Compact and lightweight design for easy portability and accessibility. 3. One-year warranty and lifetime repair service for customer satisfaction. 4. VRD (Voltage Reduction Device) protection system ensures safe and stable operation. 5. Anti-stick function and thermostatic control for better weld consistency. 6. Hot start, arc force, and HF (High Frequency) functions enhance welding performance. 7. Stable and smooth DC arc for precise and efficient welding. 8. Digital display for real-time monitoring of welding parameters. 9. Continuous and stable power output with voltage wave balancing capability. 10. Highly versatile for a wide range of materials including: - A) Various ferrous metals - B) Low carbon steel - C) Medium carbon steel - D) Alloy steel, and more **Contact Information:** 1. Grihfen Hawkins 2. Mobile: +86-186-6173-9115 We take pride in delivering high-quality welding equipment that meets global standards and is designed for both professionals and enthusiasts. Whether you're working on heavy-duty projects or small-scale repairs, our MMA 120 is built to deliver reliable results every time. For more details or assistance, feel free to reach out directly.

For HITACHI Cylinder Seal Kit

Daily maintenance of excavator hydraulic cylinders
The hydraulic cylinder of an excavator is one of the important hydraulic components responsible for driving and controlling mechanical movements. In order to ensure the normal use of hydraulic cylinders and extend their service life, daily maintenance is necessary.
1. Regularly clean the hydraulic cylinder: During use, the hydraulic cylinder will be attacked by various pollutants, such as dust, sediment, oil stains, etc. These pollutants can affect the working efficiency and lifespan of the hydraulic cylinder. Therefore, it is necessary to regularly clean the hydraulic cylinder.
2. Regular inspection of seals: The seals of hydraulic cylinders are key components to ensure their normal operation. If the seals are damaged or worn, it can lead to oil leakage or unstable operation of the hydraulic cylinder. Therefore, it is necessary to regularly inspect the sealing components of the hydraulic cylinder and replace them in a timely manner if there is any damage or wear.
3. Regular inspection of hydraulic oil: The operation of hydraulic cylinders requires the support of hydraulic oil, so the quality of hydraulic oil has an important impact on the working effect of hydraulic cylinders. Regularly check the quality of hydraulic oil, and replace it promptly if there is contamination or deterioration.
4. Regularly check the hydraulic pipeline: The hydraulic pipeline is the blood vessel of the hydraulic cylinder. If there is oil leakage or damage to the pipeline, it can cause the hydraulic cylinder to not work properly. Therefore, it is necessary to regularly inspect the hydraulic pipelines and promptly repair or replace them if there is any oil leakage or damage.
5. Regularly lubricate the hydraulic cylinder: The piston rod and piston ring of the hydraulic cylinder need to be lubricated to reduce wear and friction. Therefore, it is necessary to regularly apply lubricating oil to ensure the normal operation of the hydraulic cylinder.
In short, the daily maintenance of excavator hydraulic cylinders is very important, which can extend their service life and improve work efficiency. Regular cleaning of hydraulic cylinders, inspection of seals, hydraulic oil, hydraulic pipelines, and lubrication of hydraulic cylinders are required.


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