An oil-impregnated bushing is a self-lubricating bearing made from porous metal materials, typically copper or bronze, with lubricating oil thoroughly absorbed during the manufacturing process. Its core technology allows the internal pores to gradually release oil during operation, forming a continuous lubricating film between the shaft and the bushing, significantly reducing friction and wear while enhancing durability and operational stability. Additionally, the porosity, oil type, and dimensions of these bushings can be customized to meet specific operational demands, providing significant advantages in reducing friction, extending service life, simplifying maintenance, and improving overall efficiency.
Customized Oilite Bushing Advantage
●Maintenance-Free Operation – No need for frequent lubrication, reducing labor and maintenance costs.
●Cost-Effective Solution – Longer service life and stable performance lower the total cost of ownership.
●Wide Application Range – Suitable for automotive, industrial machinery, home appliances, and agricultural equipment.
●Customizable Options – Available in different sizes, shapes, and material compositions to meet OEM/ODM requirements.
Customize Self-lubricating Bushings According To Scenarios
● Automotive industry: Engines, transmissions, and steering systems.
● Electric motors and pumps: Ensuring long-term durability and efficiency.
● Construction machinery: Excavators, cranes, and heavy-duty equipment.
● Household and office appliances: Fans, printers, and low-noise devices.
● Specialized industries: Aerospace components and customized industrial machinery.
Product Functions of Oil-Impregnated Bushings
Self-Lubrication
The porous structure is impregnated with lubricating oil, ensuring continuous lubrication during operation.
Wear Resistance
Designed to withstand long-term friction and reduce surface wear in machinery.
High Load Capacity
Strong bronze-based material provides excellent strength under heavy loads.
Noise Reduction
Smooth sliding reduces vibration and operational noise in equipment.
Corrosion Resistance
Performs reliably in humid or harsh environments without frequent maintenance.
Extended Service Life
Minimizes downtime and replacement frequency, improving overall equipment efficiency.
Oil-Embedded Bushings Parameter
| Physical & Mechanical Properties | |
| Property | Value |
| Density [g/cm³] | 6.4–6.8 |
| Minimum porosity [% oil by vol.] | 19 |
| Strength constant (K) | 26,500 |
| Tensile strength [psi] | 14,000 |
| Elongation [% in 1"] | 1 |
| Yield strength in compression [psi] | 11,000 |
| Operational Parameters | Chemical Composition | |||
| Parameter | Value | Element | Content Range | |
| PV | 50,000 | Copper [%] | 87.2–90.5 | |
| Static P [psi] | 8,000 | Iron [%] | 1 max. | |
| Dynamic P [psi] | 2,000 | Graphite [%] | 0–0.3 | |
| V [sfm] | 1,200 | Tin [%] | 9.5–10.5 | |
Bushing Performance Comparison
| Type | Lubrication | Wear Resistance | Load Capacity | Maintenance |
|---|---|---|---|---|
| Oil-Impregnated Bushing | Self-lubricating, oil released during operation | Excellent | High | Low maintenance |
| Solid Copper Bushing (Non-oil) | Requires regular external lubrication | Moderate | Good | High maintenance |
| Bronze Bushing | Requires oil or grease lubrication | Very High | Excellent | Medium maintenance |
| Brass Bushing | Needs external lubrication | Lower than bronze | Moderate | Medium maintenance |
Related Products
Phosphor Bronze Bushes
Bushings of phosphor bronze, with excellent strength and corrosion resistance.
Bronze Sleeve Bearings
Sleeve bearings crafted from bronze, suitable for various load - bearing scenarios.
Oil Impregnated Brass Bushings
Brass bushings with oil impregnation for self - lubrication.
Graphite Bronze Bushing
A bronze bushing containing graphite, providing enhanced lubrication.
One-stop Cosmetic bushing Factory in China
Jiande Welfine Technology Co., Ltd., founded in 2001, is a professional bronze bushings manufacturer with over 13,000 m² of production facilities. The company is certified with ISO 9001:2015 and IATF 16949:2016, ensuring precision and reliability in every product. As a trusted B2B partner, Welfine stands out with strong OEM/ODM capabilities, in-house laboratory testing, and strict quality management, earning long-term cooperation and trust from clients across Europe and North America.
Oil-Based Bushing Maintenance
Low Maintenance
Oil-based bushings are self-lubricating and require little to no lubrication under normal operating conditions, significantly reducing maintenance frequency compared to traditional bushings.
Regular Inspection
It is recommended to regularly inspect the bushing for abnormal wear, noise, or vibration. Also, visually inspect the bushing for proper alignment and surface cleanliness.
Working Environment
Maintain a clean operating environment free of excessive dust, dirt, or corrosive substances. Impurities may clog the bushing pores and reduce its self-lubricating effectiveness.
Supplementary Lubrication
In extremely heavy-load or high-temperature applications, a compatible lubricant or grease may be added to enhance performance and extend service life.
Timely Replacement
If severe wear, deformation, or damage is observed, the bushing should be replaced promptly to prevent further damage to the shaft or other machine components.
Storage Requirements
Until installed, store in a dry, dust-free environment. Avoid prolonged exposure to moisture or direct sunlight to maintain the lubricant in the bushing pores.
Honor and qualification
Quality management system certification
environmental management system
OHS Management System Certification
Zhejiang Manufacturing
Quality Management System Certification
FAQ
Q: What is the difference between bronze bushings and brass bushings?
A: Bronze bushings are stronger and more wear-resistant, making them suitable for heavy-duty applications, while brass bushings are more cost-effective for light-duty or low-speed machinery.
Q: Are oil-impregnated bushings truly maintenance-free?
A: Yes, oil-impregnated bushings are self-lubricating, but in extreme load or temperature conditions, occasional supplemental lubrication may be recommended.
Q: How do copper bushings perform compared to bronze bushings?
A: Copper bushings are softer and require regular lubrication, whereas bronze bushings offer higher strength and longer service life in industrial applications.
Q: Can I request OEM or ODM service for customized bronze bushings?
A: Absolutely. We provide OEM/ODM services with flexible customization in size, porosity, lubrication type, and material composition.
Q: What industries commonly use brass bushings?
A: Brass bushings are widely used in low-load, low-speed machinery, home appliances, and cost-sensitive industrial devices.
Q: Are oil-impregnated bushings suitable for automotive applications?
A: Yes, oil-impregnated bushings are widely applied in automotive engines, transmissions, and steering systems due to their self-lubrication and durability.
Q: Do bronze bushings require external lubrication?
A: Generally, bronze bushings perform best with oil or grease lubrication, especially in heavy-duty and shock-load applications.
Q: What advantages do brass bushings have over copper bushings?
A: Brass bushings provide better wear resistance and stability than pure copper bushings, while remaining affordable for light industrial applications.
Q: How do I choose between oil-impregnated bushings and traditional bronze bushings?
A: If you prefer low maintenance and smoother operation, oil-impregnated bushings are ideal; for extreme heavy loads, traditional bronze bushings may be better.
Q: What quality certifications do your bronze and brass bushings have?
A: Our bushings are produced under ISO 9001:2015 and IATF 16949:2016 quality standards, ensuring consistent precision and reliability for global clients.
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