Hydraulic cylinder sealing material :How to correctly choose the best one

The hydraulic cylinder is the main executive part of construction machinery, and many actions are completed by the cylinder. The material of the support bushing has a great influence on the quality of the hydraulic cylinder. The non-metallic materials commonly used as the support bushing are nylon 1010 and polyacetal.

Nylon 1010 has good strength, rigidity, and heat resistance, as well as good molding processability; it has high water absorption and shrinkage, poor dimensional stability, and is greatly affected by temperature. The operating temperature range is -30-80°C. Polyoxymethylene is a linear polymer with high melting point, high density and crystallinity. It has good comprehensive properties, such as tensile strength, impact toughness, stiffness, fatigue strength, creep resistance and dimensional stability. Very good chemical resistance and solvent resistance, especially organic solvents and grease. Nylon 1010 has high hardness, rigidity and good processing technology, but it is greatly affected by temperature. It is suitable for construction machinery, machine tool equipment and other occasions that are less affected by temperature.

Polyoxymethylene has excellent mechanical properties, and can be molded by the general molding method of thermoplastics, making it widely used in the automotive industry, machinery industry, electronics industry, building materials and other industries. Polyformaldehyde can also replace copper, zinc, aluminum and other non-ferrous metals to make structural parts. Particularly suitable for making parts that are resistant to friction and high loads.

``According to the analysis of the characteristics of the above two materials, it can be seen that the working temperature of the hydraulic cylinder is the main basis for determining which material to use as the support bushing.
Both materials have good practicability and ease of processing. Casting raw materials into bars or pipes can be processed and shaped with ordinary lathes, and can be processed by scraping and grinding after molding.
Therefore, it is not only suitable for machine manufacturing, but also for equipment maintenance.