Analysis: The Principle of Self-Lubricating Bearings

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Self-lubricating bearings are gaining popularity in various mechanical applications due to their numerous advantages. While traditional bearings such as ball and roller bearings are still widely used, self-lubricating bearings offer a more efficient, maintenance-free solution. As the demand for low-maintenance, durable, and cost-effective bearing systems increases, self-lubricating bearings are becoming a preferred choice in many industries. Some key features and benefits of self-lubricating bearings include: 1. **Oil-Free or Low-Oil Operation**: These bearings can function without lubrication or with minimal oil, making them ideal for hard-to-reach areas or environments where refueling is impractical. 2. **Excellent Wear Resistance**: With a low friction coefficient, they significantly reduce wear and tear, ensuring longer service life. 3. **High Elastoplasticity**: This allows the bearing to distribute stress over a larger contact area, enhancing load capacity and performance under heavy loads. 4. **Low Static Friction Coefficient**: This helps eliminate stiction at low speeds, improving the precision and smooth operation of machinery. 5. **Reduced Vibration and Noise**: Self-lubricating bearings help minimize mechanical vibrations and noise, leading to better working conditions and reduced environmental pollution. 6. **Formation of a Lubricating Film**: During operation, these bearings can form a protective film that safeguards the shaft from damage and prevents seizure. 7. **Lower Hardness Requirements for the Shaft**: The shaft does not need to be hardened or tempered, which simplifies the manufacturing process and reduces costs. 8. **Thin-Wall Design and Lightweight**: Their compact structure helps reduce the overall size of the machine, making them suitable for space-constrained applications. 9. **Versatile Surface Treatments**: The steel backing can be electroplated with various metals, allowing use in corrosive environments. They are commonly found in printing machines, textile equipment, tobacco machinery, micro-motors, automobiles, motorcycles, and agricultural and forestry machinery. When it comes to gap-type self-lubricating bearings, they offer excellent load capacity and wear resistance. They are especially suitable for slow-speed, high-load applications involving rotational or oscillating motion. In dry or low-lubrication conditions, they can operate for extended periods without oil, and the presence of an oil layer can further extend their lifespan. Additionally, the outer plastic layer allows for some machining flexibility during production, enabling the bearing to be adjusted after being pressed into the housing for optimal fit and performance. These bearings are widely used in automotive chassis components, metallurgical equipment, mining machinery, hydraulic systems, construction tools, and agricultural devices. The JDB solid-inlaid bearing series serves as a universal base product, suitable for a wide range of operating conditions—whether under high or low pressure, high or low temperatures, or in water or oil-based environments. Made from high-strength brass, this bearing has twice the hardness of standard copper bushings and offers more than double the wear resistance. It is extensively used in light and heavy industrial machinery, including continuous casting machines, rolling mills, injection molding machines, papermaking equipment, mold guide columns, ships, and machine tools.

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