Custom Graphite Bush Bearing Manufacturer
Graphite Bearing Bushing is a bushing made of graphite as the main lubricating and wear-resistant material. It has excellent properties such as self-lubrication, high temperature resistance, and wear resistance. It is widely used in various mechanical transmission fields. As Graphite Bearing supplier, we can provide customers with high-quality, multi-specification Graphite Bearing Bushings with advanced production technology and strict quality control to meet the use requirements under different working conditions and help mechanical equipment to operate stably and efficiently.
Graphite Bush Bearing feature
Widely Applications
Across heavy industry, construction machinery, precision equipment, chemicals, marine and aviation, and new energy sectors.
Advanced Production Equipment
Leveraging high-precision machining equipment, we can customize copper alloy bushings in multiple materials, supporting one-stop production.
Quality Service
We provide customized solutions, full order tracking, and a 48-hour cross-border response to after-sales issues.
Large Market Potential:
Demand for high-performance sliding components is surging in markets such as Europe, the United States, and Southeast Asia, creating significant growth potential for export orders.
Graphite Bush Bearing advantage
Self-lubricating and Maintenance-free
Graphite particles are uniformly embedded in the bronze matrix, and during friction, they automatically transfer to the contact surface to form a long-lasting lubricating film, enabling oil-free or minimal-oil operation throughout the process.
High Load-bearing Capacity and Impact Resistance
Based on high-strength tin bronze or aluminum bronze matrix, it has excellent mechanical properties and can stably withstand radial and axial heavy loads ranging from dozens to hundreds of megapascals.
Low Wear and Long Service Life
The wear resistance of the bronze matrix and the lubricating effect of graphite work synergistically, resulting in a wear rate much lower than that of traditional metal bearings, reducing the need for frequent replacement.
Resistance to Harsh Environments
Free from reliance on liquid lubricants, it can maintain stable operation in complex working conditions such as dust, humidity, and even slight corrosion, making it applicable to a wider range of scenarios.
Strong Installation Adaptability
Adopting precision machining technology, the dimensional tolerance is strictly controlled at the micrometer level, enabling accurate adaptation to various shafting structures without complex debugging.
Lower Comprehensive Cost
It reduces production losses caused by maintenance shutdowns, extends the replacement cycle to lower the frequency of spare parts procurement, and at the same time saves the cost of lubricating material consumption.
graphite for bearings application
High temperature industry
In high temperature (500-1200℃) environments such as metallurgical rolling mills, glass forming equipment, and heat treatment furnaces, it can withstand high temperature radiation and heavy load friction, and replace metal bearings that are prone to failure.
Corrosive environments
Chemical pumps and valves, seawater desalination equipment, sewage treatment machinery, etc., can resist corrosive media such as acid, alkali, seawater, and sewage, and solve metal corrosion problems.
Heavy-load and low-speed working conditions
mining crushers, engineering machinery cylinders, water conservancy and hydropower equipment, etc., can withstand heavy loads ranging from several tons to tens of tons, are resistant to dust and water impact, and extend maintenance cycles.
Lubrication-free/clean scenarios
Vacuum equipment (vacuum furnaces, coating machines), food and pharmaceutical machinery, textile equipment, etc., to achieve oil-free lubrication and avoid contamination or lubricant failure.
About Graphite Bush Bearing Supplier
As your trusted graphite bronze bushing manufacturer, our bearing bushing factory covers an area of 14,000 square meters. We offer a comprehensive product line, including graphite-filled bronze bushings, self-lubricating bushings, bronze bushings, flanged bronze bushings, bearing bushings, and oil-free bronze bushings. Our products are wear-resistant, long-lasting, and offer excellent performance, making them widely used in various fields such as machinery, electronics, medical equipment, and automotive. We have earned unanimous praise from customers worldwide, including those in Europe and the United States, and have established long-term, stable partnerships.
Choosing us means you will receive stable and reliable products, professional technical support, and attentive customer service. We prioritize product quality and service to help your business thrive. We warmly welcome friends from all walks of life to visit us for guidance and discuss cooperation!
Material selection and performance matching
| Material Type | Core Raw Materials/Process | Key Performance Parameters | Outstanding Advantages |
|---|---|---|---|
| Natural Graphite-based | Natural flake graphite, pressed and sintered | Hardness: 15-25 Shore A Compressive strength: 20-50 MPa Friction coefficient: 0.1-0.3 (no lubrication) |
Good self-lubrication, low cost |
| Artificial Graphite-based | Petroleum coke/pitch coke, high-temperature graphitization | Hardness: 25-40 Shore A Compressive strength: 50-100 MPa Friction coefficient: 0.08-0.25 |
Uniform structure, higher strength, better wear resistance |
| Impregnated Graphite (Resin) | Graphite matrix + resin impregnation | Hardness: 30-45 Shore A Compressive strength: 60-120 MPa Friction coefficient: 0.05-0.2 Strong corrosion resistance |
Excellent corrosion resistance, good sealing |
| Impregnated Graphite (Metal) | Graphite matrix + metal (Sb/Cu) impregnation | Hardness: 35-50 Shore A Compressive strength: 80-150 MPa Friction coefficient: 0.06-0.2 High-temperature resistance ≥500℃ |
Good thermal conductivity, high-temperature resistance, strong load capacity |
| Reinforced Graphite | Graphite + fiber (carbon/glass fiber) reinforcement | Hardness: 40-55 Shore A Compressive strength: 100-200 MPa Friction coefficient: 0.07-0.22 Improved impact resistance |
High strength, impact resistance, wear resistance |
Multiple options customization
Customized size
Inner Diameter (d): Mate with the shaft diameter, clearance must be considered (usually 0.01-0.1mm, adjusted based on speed and load).
Outer Diameter (D): Mate with the bearing seat, and can be designed with an interference fit (to prevent loosening) or a clearance fit (to facilitate installation).
Length (L): Affects load capacity. The L/d ratio is typically between 1 and 2.5. Excessive length can easily lead to unbalanced loading.
structure customization
Oil groove/hole: Used to store lubricant.
Thrust step: Provides axial positioning.
Split design: For large or special-shaped bearings, a split design is used.
Chamfer/radius: Reduces stress concentration. Typical chamfer dimensions range from 0.5 x 45° to 2 x 45°.
Surface treatment customization
Nickel/chrome plating: Improves surface hardness and wear resistance.
Sprayed graphite lubricant coating: Reduces starting friction.
Impregnation sealing: Fills pores and improves sealing.
Customizable Accuracy Grades
Normal Precision (IT7-IT9): Suitable for low-speed, general-load applications, with a surface roughness of Ra3.2-6.3μm.
High Precision (IT5-IT6): Suitable for high-speed, precision transmission applications, with a surface roughness of Ra0.8-1.6μm.
Honor and qualification
Quality management system certification
environmental management system certification
OHS Management System Certification
Zhejiang Manufacturing Certification
Quality Management System Certification
Questions you may be interested in
Q: What is the wear resistance of carbon graphite bearings?
A: Graphite bearings offer excellent self-lubrication and wear resistance, with a low coefficient of friction, and can operate stably even in dry or boundary lubrication conditions.
Q: Will the performance of your bearing graphite be affected in high-temperature environments?
A: Our graphite bearing bushings can withstand temperatures ranging from 400°C to 1000°C, depending on the material (specific specifications depend on the model). They maintain structural stability at high temperatures, resisting softening or deformation, while maintaining excellent mechanical strength and lubrication properties. They are suitable for high-temperature applications such as metallurgy and chemical engineering.
Q: What media are carbon graphite for bearings suitable for?
A: Graphite itself has excellent chemical stability. With the exception of strongly oxidizing media (such as concentrated nitric acid and sulfuric acid), it is compatible with most acidic and alkaline solutions, oils, organic solvents, and other media.
Q: Do you offer custom production based on our drawings?
A: Our graphite bearings offer a dimensional accuracy of ±0.01 to ±0.05mm (depending on product specifications), meeting the installation requirements of most precision equipment. We also fully support custom production based on customer drawings or samples, including varying sizes, shapes, and tolerances. We can adjust our production process to meet your specific needs.
Q: What is the typical service life of graphite bearing bushings? What factors affect this?
A: Under normal operating conditions, graphite bearing bushings typically have a service life of thousands to tens of thousands of hours. Their service life is primarily affected by factors such as load, speed, operating temperature, media environment, and proper installation. Proper operating conditions and proper installation and maintenance can effectively extend their service life.
Find professional graphite bearing bushing manufacturers and suppliers in China here. We're offering high quality customized graphite bearing bushing with competitive price. Please rest assured to wholesale bulk products from our factory.
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