Cast Copper Alloy Oil Bearing

Source: Bearing Network | Date: February 2, 2013

Cast copper alloy oil bearings are a type of self-lubricating bearing that is produced through a specialized casting process. During the casting stage, small amounts of elements such as titanium (Ti), zirconium (Zr), iron (Fe), or aluminum (Al) are added to enhance the properties of the material. The process also involves grain refinement, which helps in creating a porous structure. After this, the casting is impregnated with lubricating oil, transforming it into a functional oil bearing. These bearings have several notable characteristics: 1. **Machining Requirement**: They typically require machining after casting to achieve the desired dimensions and surface finish. 2. **Casting Production Method**: Unlike powder metallurgy, this method does not require a metal mold, making it more suitable for producing medium to large-sized oil bearings in small batches. 3. **Superior Load Capacity**: Compared to copper-based powder metallurgy bearings, cast copper alloy oil bearings offer higher load capacity, lower wear rates, and similar resistance to scoring. 4. **Limited Porosity and Oil Content**: Due to their relatively low porosity and oil content, these bearings often require intermittent oiling systems to ensure proper lubrication and performance over time. This type of bearing is widely used in applications where continuous lubrication is difficult to maintain, but regular maintenance can help extend its service life.

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This article was originally published on China Bearing Network. For more information, visit: [http://www.chinabearing.net](http://www.chinabearing.net) Previous Article: "Understanding Bearing Lifetime and Faults": A Detailed Explanation of KOYO Bearings and Their Operating Conditions

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