What is the effect of temperature change on the sealing performance of the rotary table cylinder

Rotary table cylinders play a vital role in automation equipment, robots and precision machining, and their sealing performance directly affects the efficiency and safety of the equipment. Temperature change is one of the key factors affecting the sealing performance of the cylinder, which has a significant impact on the physical properties, dimensional changes, service life, lubricant performance and working pressure of the sealing material.
The physical properties of the sealing material will change significantly under different temperature conditions. The elasticity and flexibility of seals usually made of rubber, polyurethane or other synthetic materials show different characteristics in high and low temperature environments. Under high temperature conditions, the elasticity of the sealing material may decrease, causing the sealing ring to become fragile and lose its original flexibility. In addition, high temperature may also cause thermal aging of the material, cracking and hardening, which seriously affects the sealing performance. Relatively speaking, under low temperature conditions, the sealing material may become more brittle and hard, lose elasticity and deformation ability, and this change will cause poor contact between the seal and the cylinder body, which will cause leakage problems.
Temperature changes will also cause thermal expansion or contraction of the seal, which will affect its dimensional stability. Under high temperature conditions, the expansion of the seal may be excessive, resulting in an increase in the fit clearance between the cylinder body, thereby affecting the sealing effect. At low temperatures, the shrinkage of the seal may cause the seal to become less tight, increasing the risk of leakage.
The service life of the seal is also significantly affected by temperature changes. At high temperatures, the aging process of the sealing material is accelerated, resulting in a decrease in mechanical properties, which shortens the service life. At low temperatures, the material may become brittle, increasing the risk of the seal breaking during use.
The performance of the lubricant is also affected by temperature fluctuations. The lubricant plays a vital role in the rotary table cylinder to ensure the stability of the sealing performance. At high temperatures, the viscosity of the lubricant may decrease, resulting in a decrease in lubrication effect, increased friction and wear, and thus affecting the sealing performance. At low temperatures, the viscosity of the lubricant may increase, resulting in a decrease in fluidity, and a worse lubrication effect, which in turn increases the wear of the seal.
Finally, temperature fluctuations can also lead to changes in the pressure inside the cylinder. At high temperatures, the pressure of the gas increases, and the pressure on the seal ring also increases. If the design or material of the seal cannot withstand this pressure, it may cause leakage. At low temperatures, the pressure inside the cylinder may decrease, which will affect the sealing effect of the seal and further increase the risk of leakage.