Graphite Bearing Sleeve

The graphite bearing sleeve is made of natural graphite or synthetic graphite as the base material. It is reinforced through processes such as isostatic pressing and impregnation with resins/metals (such as epoxy resin, phenolic resin, antimony, copper) to form a composite material component that combines self-lubrication and high mechanical strength. Its layered crystal structure can continuously release graphite particles during friction, forming a stable solid lubricating film on the rubbing surface, enabling maintenance-free operation. The product can be customized according to the working conditions. Common structures include integral graphite sleeves and copper-based embedded graphite sleeves, etc. It is widely used in high-demand fields such as chemical engineering, metallurgy, semiconductors, and new energy.

Optimal use of high-quality graphite material with precise processing
Stable performance, product resistant to high temperatures and corrosion,Long service life
Precise processing results in excellent product quality, making it last longer

Outstanding self-lubrication: Through the interlayer sliding of the graphite lamellar structure, the friction coefficient can be as low as 0.05–0.16 under dry friction conditions, and it can operate stably for a long time without the need for external lubricants, completely eliminating lubrication contamination.
Excellent high-temperature resistance: It can withstand temperatures up to 3500°C in non-oxidizing atmospheres and can also work stably in air up to 400–500°C, far exceeding the limit of metal bearings.
Excellent chemical stability: It has excellent corrosion resistance to most acids, bases, salts, and organic solvents, and is suitable for environments with strong corrosive media, such as chemical pumps and reaction vessels.
Good thermal and electrical conductivity: The high thermal conductivity helps to quickly dissipate friction heat and prevent local overheating; the electrical conductivity can avoid static electricity accumulation, and is suitable for applications with anti-static requirements.

Chemical and Petrochemicals
Chemical pumps, shielded pumps, valves, reactor vessel mixers, pipeline connectors
Resistant to strong corrosive media (acid, alkali, solvents), achieving zero leakage and maintenance-free operation, extending equipment lifespan
Metallurgy and High-Temperature Treatment
Continuous casting machine guide rollers, rolling mill bearings, high-temperature kiln furnace conveying equipment, heat treatment furnaces
Resistant to temperatures above 300°C, no need for cooling systems, reducing energy consumption and maintenance costs
Semiconductor/PV
Single crystal growth furnace thermal field components, CVD base, wafer fixtures
High purity (impurities < 50 ppm), dust-free pollution, ensuring a clean production environment
Food and Pharmaceutical
Food packaging machinery, pharmaceutical mixing equipment, filling line bearings
No lubricating oil required, avoiding product contamination, meeting hygiene standards
New Energy and Aerospace
Fuel cell bipolar plates, hydrogen storage and transportation accessories, vacuum equipment sleeves, engine auxiliary components
Self-lubricating, lightweight, resistant to thermal shock, suitable for oil-free, high-speed, high-precision working conditions

Normal operating conditions: Select isostatic pressure graphite sleeves, which offer high cost-effectiveness.
Scenarios with high purity requirements (such as semiconductors, photovoltaics): Choose high-purity graphite sleeves, with impurity content < 50 ppm.
Ultra-high temperature, heavy-load, and wear-resistant scenarios: Select graphite sleeves impregnated with antimony or copper, or enhanced surface coating models, which can increase lifespan by 3-5 times. Strongly corrosive medium: Preferentially select impregnated resin graphite sleeves, seal the micropores to prevent the medium from penetrating.

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