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As a leading manufacturer with over 25 years of experience, Anping County Boli Hardware Wiremesh Products Factory (established in 1998) proudly presents our Self-Lubricating Copper Bushing with Graphite Plug. Engineered for demanding applications, this bushing delivers a remarkable 1200 MPa tensile strength and an exceptionally long service life, reducing maintenance costs and downtime. Our product is designed to meet the rigorous standards of global industries, from heavy machinery to precision equipment.
The secret lies in the combination of a high-strength copper alloy matrix and strategically embedded graphite plugs. These plugs provide continuous lubrication without external oil or grease, making the bushing ideal for hard-to-reach areas or environments where contamination must be avoided. The result is a reliable, low-friction component that performs consistently under high loads and varying temperatures.
Key Features & Technical Specifications
- Self-Lubricating Design: Graphite plugs release a thin film of lubricant during operation, eliminating the need for external lubrication systems.
- High Tensile Strength (1200 MPa): Ensures durability under extreme loads, resisting deformation and wear.
- Extended Service Life: Tested in continuous operation, significantly outperforming standard bronze bushings in abrasive environments.
- Wide Operating Temperature Range: Suitable for applications from -40°C to +300°C (customizable for higher ranges).
- Low Coefficient of Friction: Reduces energy consumption and heat generation, improving overall system efficiency.
- Corrosion & Wear Resistance: Copper alloy base provides excellent resistance to corrosion and galling, even in humid or chemical-laden environments.
- Customizable Dimensions: Available in various inner/outer diameters, lengths, and graphite plug configurations to fit specific requirements.
| Property | Value |
| Material | CuSn10P1 + Graphite plug |
| Tensile Strength | ≥1200 MPa |
| Hardness (HB) | 180–250 |
| Operating Temperature | -40°C to +300°C |
| Friction Coefficient | 0.08–0.12 (dry) |
| Max PV Value | 2.5 N/mm²·m/s |
Customer Benefits
- Reduced Maintenance: Self-lubrication eliminates the need for manual greasing, saving labor and lubricant costs.
- Improved Equipment Uptime: Longer service intervals mean fewer shutdowns for part replacement.
- Enhanced Performance: High tensile strength and low friction lead to smoother operation and higher precision in motion control.
- Versatility: Suitable for rotary, oscillating, and linear applications in industries such as automotive, construction, mining, and packaging.
- Eco-Friendly: No oil leakage reduces environmental contamination, and the bushing is recyclable.
Frequently Asked Questions
Q1: How does the graphite plug self-lubrication work?
A: The graphite plugs are compressed into the copper matrix. During operation, friction causes microscopic graphite particles to transfer to the shaft surface, forming a dry lubricant film that reduces wear and heat.
Q2: Can this bushing be used in high-temperature environments?
A: Yes, it operates reliably up to 300°C. For higher temperatures, we can supply custom formulations with special graphite grades.
Q3: What is the typical lifespan compared to standard bronze bushings?
A: In abrasive conditions, our bushing lasts 3–5 times longer due to the self-lubricating property and high tensile strength. Actual lifespan depends on load, speed, and environment.
Q4: Are custom sizes available?
A: Absolutely. We can produce bushings with any inner diameter from 10mm to 500mm, wall thickness from 2mm to 50mm, and length up to 1000mm. Graphite plug pattern and density are also customizable.
Q5: Is this product suitable for food processing equipment?
A: The copper alloy and graphite are non-toxic and inert, making it suitable for food contact if proper cleaning is ensured. However, we recommend confirming with your local food safety regulations. We can also provide a surface coating if needed.
Q6: What is the lead time for bulk orders?
A: For standard sizes, we ship within 15–20 working days. Custom orders typically require 25–35 working days, depending on complexity. We ship from Tianjin, Qingdao, Shanghai, or Foshan ports.
Q7: Do you provide samples for testing?
A: Yes, we offer sample bushings at cost price. Many clients test our products before committing to large orders. Contact our sales team to discuss your specific requirements.
With an annual export value exceeding US $5 million and a global presence across North America, South America, Europe, Asia, Africa, and Oceania, Anping County Boli Hardware Wiremesh Products Factory has earned the trust of hundreds of industrial partners. Our 25+ years of manufacturing expertise, combined with strict quality control, ensures that every self-lubricating copper bushing meets the highest standards of performance and reliability. Choose our product for a cost-effective, long-lasting solution that keeps your machinery running smoothly. Contact us today for a quote or technical consultation!
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