IUGIS Carbon supplies carbon graphite bearings and self-lubricating graphite bearing components for industrial equipment requiring low-friction sliding performance, reduced external lubrication and reliable operation under demanding environmental conditions.
Graphite Bearing Configurations
Different equipment designs require different bearing structures.
Cylindrical Sliding Bearings
For radial shaft support in rotating machinery.
Flanged Graphite Bearings
Designed with an integrated flange for axial positioning or installation.
Thrust Graphite Bearings
Designed to accommodate axial loads rather than only radial shaft loads.
Split Graphite Bearings
Suitable for equipment where the bearing needs to be installed without completely dismantling the shaft assembly.
Guide Bearings
Used to guide shafts, rods or moving components where controlled sliding movement is required.
Custom Graphite Bearings
Non-standard profiles, grooves, holes, shoulders and other geometries can be manufactured according to engineering drawings.
Graphite Bearing vs. Graphite Bush
Graphite bushings and graphite bearings are closely related, but they should not be treated as exactly the same product category.
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Graphite Bush |
Graphite Bearing |
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Usually refers to a sleeve-type component |
Broader category of sliding bearing components |
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Primarily supports radial shaft movement |
Can support radial, axial or guided movement |
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Typically cylindrical |
Cylindrical, thrust, split, flanged or custom |
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Focus on ID / OD / length |
Focus on load, speed, PV, geometry and bearing function |
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Often used as a shaft sleeve |
Can be designed as a complete bearing interface |
There is no universal graphite grade suitable for every bearing application.Material selection should consider:
Pure Carbon / Graphite:Suitable for applications where graphite's natural self-lubricating and thermal characteristics are required.
Resin-Impregnated Graphite:Impregnation can reduce porosity and modify mechanical and tribological properties for specific applications.
Antimony-Impregnated Graphite
Can provide increased mechanical strength and wear characteristics for selected bearing applications.
Copper-Impregnated Graphite
Can provide different mechanical and thermal characteristics where higher strength or thermal performance is required.
Silver-Impregnated Graphite
Used for specialized applications where enhanced thermal and mechanical properties are required.
Dry, Liquid-Lubricated & Special-Atmosphere Operation
Graphite bearings can be designed for different lubrication environments, but the material and operating limits can vary significantly.
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Operating Condition |
Main Engineering Considerations |
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Dry Running |
PV, frictional heat, graphite grade, shaft finish and clearance |
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Water Lubricated |
Water chemistry, corrosion, film formation and material compatibility |
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Oil / Grease Lubricated |
Lubricant viscosity, temperature and compatibility |
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Chemical Medium |
Chemical resistance, concentration and temperature |
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Vacuum |
Outgassing, cleanliness, graphite grade and thermal management |
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High Temperature |
Material grade, thermal expansion and oxidation environment |
Graphite bearing performance depends on both the bearing material and the mating shaft.
Shaft Hardness:Appropriate hardness reduces counterface wear and helps maintain stable running conditions.
Surface Roughness:An excessively rough shaft accelerates graphite wear; a properly finished surface improves sliding performance.
Shaft Material:Common options: carbon steel, stainless steel, alloy steel, hardened steel, or other engineering materials.
Alignment:Misalignment creates uneven contact pressure and localized wear.
Clearance:Must account for shaft diameter, bearing dimensions, operating temperature, thermal expansion, installation tolerance, and lubrication conditions.
We manufacture custom graphite bearings based on:
- Engineering drawings or CAD files
- Existing samples
- Shaft and housing dimensions
- Load, speed, and temperature requirements
- Material specification and lubrication conditions
Customizable Features: ID/OD, bearing length, flange, thrust surface, grooves, lubrication channels, holes, steps, chamfers, split configurations, special profiles, and tight dimensional tolerances.
Strict Quality Assurance
Every production batch undergoes strict quality control protocols before export:
Dimensional Inspection
CMM (Coordinate Measuring Machine) verification.
Material Integrity
Density, shore hardness, compressive strength, and porosity testing.
Leakage & Impermeability Testing
Hydrostatic pressure testing to guarantee zero micro-porosity leakage.
OEM Development: Sample → Validation → Mass Production
For customized graphite bearings, we recommend validating the bearing under the actual application rather than moving directly from drawing to large-volume production.
Application Review
Provide load, speed, temperature, lubrication and operating medium.
Bearing Design
Confirm bearing geometry, clearance and graphite grade.
Prototype
Produce samples according to the approved drawing.
Assembly Validation
Check shaft fit, clearance, alignment and installation.
Performance Testing
Where required, evaluate friction, temperature rise, wear and running stability.
Specification Approval
Confirm the final drawing, material and inspection standard.
Mass Production
Manufacture according to the approved specification.
Repeat Supply
Use the approved specification as the reference for future orders.
FAQ
With abundant experience, we are one of the most professional graphite bearing manufacturers and suppliers in China. Please feel free to buy high quality graphite bearing made in China here from our factory. Good service and quality products are available.
Carbon Bearing, Carbon Graphite Bearing Material, Graphite Sleeve Bearings