Product Introduction
The copper sleeve graphite particles are also known as embedded graphite particles or self-lubricating graphite particles. They are solid lubricating carbon particles specifically pressed into the interiors of copper sleeves, shaft sleeves, and sliding bushings made of materials such as brass, bronze, and manganese bronze.
Core Features
The product is made from high-purity graphite and is formed through high-pressure molding and ultra-high-temperature graphite densification processing. It achieves oil-free self-lubrication through the graphite lamellar structure. During operation, a solid lubricating film is formed on the friction surface, completely solving problems such as grease failure, shaft sleeve jamming, and wear and tear and scratches in high-temperature, dusty, heavy-load, and no-oil supply scenarios. It is the core supporting consumable for oil-free self-lubricating copper sleeve bearings.
General high-purity graphite particles
Fixed carbon ≥ 99.9%, uniform texture, stable lubrication effect, suitable for ordinary machinery, molds, and regular copper sleeves, with high cost performance.
High-density wear-resistant graphite particles
Product material classification
Molded by isostatic pressing process, high density, strong anti-wear property, mostly used for high-temperature, continuous operation, heavy-load precision copper sleeves.
Impregnated modified graphite particles
Processed by resin and anti-seepage impregnation treatment, enhanced impact resistance and oxidation resistance, suitable for dusty and slightly corrosive harsh working conditions.
Case 1: Long-term cooperation with a construction machinery copper sleeve factory
Partner: A large-scale construction machinery group's copper sleeve supply factory
Cooperation content: Customized high-density graphite particles with diameters of 4mm and 5mm, suitable for excavators and cranes' articulated shaft copper sleeves
Cooperation outcome: The lifespan of the copper sleeves was extended from 3 months to 12 months, the maintenance cost for the customer was reduced by 60%, the annual purchase volume reached 5 million particles, and a 5-year strategic cooperation relationship was established between the two parties
Case 2: Customized project for copper sleeves for high-temperature equipment
Partner: A metallurgical equipment manufacturer
Cooperation content: Developed antioxidant modified graphite particles, suitable for 600℃ high-temperature continuous casting machine bearings' copper sleeves
Cooperation outcome: Resolved the problem of grease lubrication failure under high-temperature conditions, the equipment operated continuously for 18 months without maintenance, and was highly recognized by the customer
Common Problem
Complete production process
Common shapes: cylindrical particles, spherical particles. The cylindrical shape is the mainstream style with copper sleeve embedding.
Standard diameters: 2mm, 3mm, 4mm, 5mm, 6mm, 8mm
Thickness height: Can be customized and processed according to the wall thickness of the copper sleeve and the depth of the opening
Supports custom non-standard sizes to match special structure copper sleeves
General shape and specifications
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Self-lubrication working principle
Graphite particles are pressed into the reserved slots inside the copper sleeve. During the operation of the equipment, the rotating shaft and the inner wall of the copper sleeve rub against each other, causing the surface of the graphite to slowly release a small amount of graphite powder; the powder adheres to the contact surface between the shaft and the liner, forming a uniform and stable solid lubricating film, continuously reducing the friction resistance. No additional lubricating oil needs to be added throughout the process, achieving long-term maintenance-free operation.
Applicable operating conditions
Tolerance temperature: Normal temperature to 800℃ high-temperature environment can be lubricated normally
Applicable environment: Air, dust workshops, inert atmosphere, slightly humid corrosive environment
Unsuitable scenarios: Long-term immersion in strong acid and alkali, extremely high concentration oxidation high-temperature environment. It is recommended to choose modified particle type
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