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The main role of hollow piston rod packing ring clearance
Mar 14, 2018

Hollow piston rods have obvious advantages in many fields, so more and more attention has been paid to the production and use of this product. The so-called hollow piston rod packing ring is mainly used to seal the gap between the cylinder block and the piston rod to prevent the piston rod from leaking.


Normally, there are mainly three gaps in the hollow piston rod packing, which play different roles respectively. For example, axial clearance is mainly used to ensure that the packing ring can freely float, otherwise the piston rod cannot work normally.


The existence of the radial gap is mainly to avoid the pressure of the packing ring caused by the sinking of the hollow piston rod, which can effectively prevent the packing ring from being deformed or damaged. Lest it be deformed or damaged. Finally, there is also a notch clearance, which is mainly used to compensate the wear of the packing ring.


Of course, the practical application effect of the hollow piston rod is also closely related to the processing technology. If the quality of processing is not off, it will naturally affect its quality and service life. The rolling process is usually used when the product is processed. Because of this processing method, on the one hand, the corrosion resistance of the piston rod can be improved, and on the other hand, the generation and expansion of fatigue cracks can be delayed, thereby increasing the fatigue strength of the piston rod.


In addition, the use of this method of processing has the added benefit of improving the surface roughness of the hollow piston rod and reducing the occurrence of wear, which in turn can extend the service life of the hollow piston rod as a whole.http://www.xhychromerod.com