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Help CenterOil-Impregnated Copper Bushing, 0.3um Surface Roughness, 60-80 HRB, C93200 Alloy
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer with over two decades of experience in producing high-quality metal components. Our Oil-Impregnated Copper Bushing, made from C93200 alloy (also known as SAE 660), delivers exceptional self-lubricating performance and durability. With a precise 0.3μm surface roughness and consistent hardness of 60-80 HRB, this bushing is engineered to reduce friction, extend service life, and operate reliably in demanding industrial environments. Whether you need standard sizes or custom dimensions, our factory ensures tight tolerances and long-term stability.
Key Features & Specifications
Our Oil-Impregnated Copper Bushing is designed for applications where continuous or intermittent lubrication is difficult. The porous bronze structure is vacuum-impregnated with high-grade lubricating oil, allowing the bushing to release oil gradually during operation and reabsorb it when idle. This self-lubricating property reduces maintenance costs and improves equipment uptime.
- Material: C93200 (SAE 660) bronze – excellent wear resistance, corrosion resistance, and load-bearing capacity.
- Surface Roughness: 0.3 μm Ra – ensures smooth sliding contact and minimal friction.
- Hardness: 60–80 HRB – balanced toughness for heavy-duty applications.
- Oil Content: Typically 15–25% by volume – provides consistent lubrication over extended periods.
- Operating Temperature: Suitable for -10°C to 150°C (customizable for higher ranges upon request).
- Customization: Inner diameter, outer diameter, length, and tolerances can be tailored to your drawings.
| Parameter | Value |
|---|---|
| Material Composition | Cu 83–86%, Sn 6–8%, Pb 4–6%, Zn 3–5% (C93200) |
| Density | 8.8 g/cm³ |
| Tensile Strength | ≥ 250 MPa |
| Yield Strength (0.5% offset) | ≥ 130 MPa |
| Elongation | ≥ 12% |
| Compressive Strength | ≥ 600 MPa |
| Coefficient of Friction | 0.07–0.12 (lubricated condition) |
Advantages for Your Application
Compared to standard bronze bushings, our oil-impregnated version offers:
- Reduced Maintenance: The built-in oil reservoir eliminates the need for frequent greasing or oiling, especially in enclosed or hard-to-reach assemblies.
- Lower Friction & Wear: The controlled oil film minimizes direct metal-to-metal contact, extending bushing life by 30–50% under normal load.
- Quiet Operation: Self-lubrication dampens vibration and noise, ideal for precision machinery and automotive components.
- Consistent Performance: Stable oil supply ensures uniform friction characteristics over a wide temperature range.
- Cost-Effective: Longer service intervals reduce downtime and replacement costs.
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
Since 1998, we have been a trusted manufacturer in the metal components industry. Our annual export value of US$5–10 million demonstrates global recognition and reliability. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring efficient logistics to North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our factory is equipped with advanced CNC machining, sintering, and oil-impregnation lines, allowing us to deliver consistent quality on every order. We offer custom sizes, tolerances, and packaging to meet your specific requirements. Contact us today for a quotation or technical consultation – we are ready to support your project with durable, high-performance bushings.
Frequently Asked Questions (FAQ)
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Q: What is the maximum load capacity of your oil-impregnated copper bushing?
A: The C93200 alloy bushing can handle static loads up to 35 MPa and dynamic loads up to 25 MPa under continuous lubrication. For specific applications, we recommend testing or consulting our engineering team. -
Q: Can you provide bushings with different oil volumes or special lubricants?
A: Yes, we can adjust the oil content (typically 15–25% by volume) and use specialized oils (e.g., high-temperature, food-grade) upon request. Please contact us with your requirements. -
Q: What is the dimensional tolerance of your bushings?
A: Standard tolerances are ISO IT7–IT8 for inner diameter and IT8–IT9 for outer diameter. Tighter tolerances (e.g., IT6) are available for custom orders. -
Q: How long does the oil last before re-impregnation is needed?
A: The oil supply typically lasts for the entire life of the bushing under normal operating conditions (moderate load, speed, and temperature). In extreme conditions, re-impregnation may be performed by soaking the bushing in oil at 80–100°C for 2–4 hours. -
Q: Are these bushings suitable for underwater or wet environments?
A: C93200 bronze has good corrosion resistance, but oil-impregnated bushings are not recommended for continuous submersion unless the oil is specifically formulated for water resistance. We can suggest alternative materials or coatings if needed. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes, MOQ is typically 100 pieces. For custom dimensions, MOQ may vary depending on complexity. We can accommodate smaller quantities for sample orders. -
Q: How do you ensure the surface roughness of 0.3 μm?
A: Our machining process includes precision turning and grinding, followed by quality inspection using a profilometer. Each batch is tested to guarantee compliance with the specified roughness. -
Q: Can you provide certificates of material analysis or hardness test reports?
A: Yes, we provide material test certificates (MTC) and hardness reports upon request. Please specify your requirements when placing an order.
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