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Material and function of guide ring (support ring)

May 20, 2022

 

 

   The guide ring, also known as the support ring, is a part used on the piston or piston rod of a hydraulic cylinder or cylinder to support the movement of the piston or piston rod. It can prevent the piston or piston rod from directly interacting with the cylinder during the movement. Contact and friction play a role in protecting the cylinder block and piston or piston rod from damage.

 

    The commonly used material for the guide ring is polyoxymethylene (POM). Material properties Phenolic plastic is a hard and brittle thermosetting plastic, commonly known as bakelite powder. It has high mechanical strength, toughness and wear resistance, dimensional

stability, corrosion resistance, and excellent electrical insulation performance.

 

    Molding performance under hot and humid conditions

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1. The moldability is good, but the shrinkage and directionality are generally larger than ordinary plastics, and it contains moisture volatiles. It should be preheated before molding, and exhaust should be exhausted during the molding process. If it is not preheated, it should be improved Mold temperature and molding pressure.

 

2. Mold temperature has a great influence on fluidity. Generally, when it exceeds 160 degrees, the fluidity will drop rapidly.

 

3. The hardening speed is generally slower than that of ordinary plastics, and the heat released during hardening is large. Large thick-walled plastic parts The internal temperature is easy to be too high, and it is easy to cause uneven hardening and overheating. Bakelite guide ring: mainly for guiding. Wear belt: Applicable working conditions: suitable for the guidance of hydraulic cylinders, pistons and piston rings in cylinders, supporting and guiding effect. Reciprocating speed: ≤15M/S Operating temperature: -60℃~+220℃ Material: PTFE. Guide ring: Applicable working conditions: dual-purpose for hole and shaft, supporting and guiding the piston or piston rod.

 

Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA. L-type guide ring: Applicable working conditions: professional piston, supporting and guiding the piston. Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA. T-type guide ring: Applicable working conditions: professional piston, supporting and guiding the piston.

 

Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA. Guide sleeve FI: Applicable working conditions: professional piston, supporting and guiding the piston. Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA. Guide sleeve FA: Applicable    working conditions: professional piston, supporting and guiding the piston. Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA. Guide sleeve FAI: Applicable working conditions: professional piston, supporting and guiding the piston, and also having a dustproof effect. Operating temperature: -60℃~+220℃ Material: PTFE, POM, PA.

 

    How to install the guide ring on the piston:


   How is the guide ring on the piston installed? Is it hot? What should I do if the inner diameter of the measuring guide ring is smaller than the outer diameter of the piston groove?

 

 

    What is the inside diameter of your guide ring? How many piston grooves? What material is the guide ring made of? And do your piston rings have openings? If the material of your guide ring is PTFE, and the difference is slightly larger, it is generally possible to use hot-loading. If the difference is particularly large, not only hot-loading, but also with the tire, otherwise it cannot be installed.

Generally, there are two kinds of compressors, and the support ring of one kind of compressor does not need to be heated. The other requires heating.