The sealing performance of a hydraulic cylinder is crucial to ensure its normal operation and prevent leakage. The following are several key aspects of hydraulic cylinder sealing performance assurance:
1. Seal selection: The seals used in hydraulic cylinders are usually rubber sealing rings, such as O-rings, U-rings, buffer rings, etc. Choosing high-quality seal materials, such as NBR, FKM, PU, etc., can provide better oil resistance, wear resistance and high temperature resistance to ensure the performance of the seal.
2. Sealing surface design: The sealing surface of the hydraulic cylinder needs to be smooth and precise to ensure a tight fit between the sealing surfaces and avoid leakage. The sealing surface of a hydraulic cylinder is usually polished to improve surface accuracy and reduce the possibility of leakage.
3. Claw-type sealing structure: Hydraulic cylinders often adopt a claw-type sealing structure, which uses the two-way sealing effect of the claw-shaped sealing ring to form an airtight sealing effect under high pressure. This structure can provide better sealing performance and prevent liquid leakage.
4. Sealing gap control: The sealing gap between the sealing ring and the hydraulic cylinder needs to be accurately controlled to ensure good fit between the sealing ring and the sealing surface. A gap that is too large may cause leakage, while a gap that is too small may increase friction and wear of the sealing ring.
5. Hydraulic system maintenance and upkeep: Regularly inspect and replace seals, clean the inside of the hydraulic cylinder, and maintain the normal operation of the hydraulic system, which can effectively ensure the sealing performance of the hydraulic cylinder.
In short, ensuring sealing performance requires the selection of appropriate seal materials, reasonable design of sealing surfaces, adoption of appropriate sealing structures, and regular maintenance and upkeep. These measures can effectively improve the sealing performance of the hydraulic cylinder, ensure its normal operation and prevent leakage.
