Analysis of the information and layout of the bearing bush

**Analysis of the Information and Layout of the Bearing Bush** Home > Bearing Knowledge > Analysis of the Information and Layout of the Bearing Bush Source: China Bearing Network | Time: June 8, 2014 --- The bearing bush is an essential component of a bearing, directly in contact with the shaft. It supports the load and moves relative to the shaft. To reduce friction and wear, the material used for the bearing bush must meet several requirements, including high compressive strength, fatigue resistance, impact resistance, and a low coefficient of friction. The thickness of the bearing alloy typically ranges from 0.013 to 0.13 mm. The material should also have good anti-galling properties, especially when the load is high and the rotational speed is fast. Additionally, it should be able to tolerate foreign particles due to its low hardness, good plasticity, and low elastic modulus. Corrosion resistance and cost-effectiveness are also important factors in selecting the right bearing material. Commonly used materials for bearing bushes and linings can be divided into two categories: metallic and non-metallic. **Metallic Materials:** 1. **Cast Iron**: Usually gray cast iron or ductile iron, suitable for low-speed and light-load applications. It has a graphite layer on the surface that helps reduce friction. 2. **Bearing Alloys**: ZChSnSb10-6 offers excellent corrosion resistance and anti-galling properties, making it ideal for high-speed and heavy-load applications like rolling stock. ZChPbSb16-16-2 is resistant to galling but has poor thermal expansion and is brittle, suitable for medium-speed and medium-load conditions. 3. **Bronze**: ZCuPb30 is commonly used for its anti-galling properties. ZCuSn10-l is known for its excellent wear resistance and is ideal for high-speed and heavy-load environments. However, it requires a harder and smoother journal for optimal performance. 4. **Aluminum Alloys**: Bimetallic low-tin aluminum alloys contain about 0.5% tin, while high-tin alloys (with 20% tin) are used in locomotive diesel engines for their high strength, corrosion resistance, and thermal conductivity. 5. **Ceramic Metal**: Made by mixing iron powder with graphite or copper powder, then forming and sintering it into a porous structure. These bearings are oil-impregnated and used in low-load, medium-speed applications where smooth operation is required. **Non-Metallic Materials:** - **Plastics**: Phenolic resin, nylon, and PTFE offer good compressive strength, anti-adhesion, and wear resistance. They are often used in low-load and low-speed applications. - **Rubber**: Hardened rubber is used in oscillating and misaligned shafts, especially in dirty or wet environments. --- **Bearing Layout Types:** Bearings can be classified into integral and split types. Integral bearings are cast as a single unit, while split bearings allow for easier installation and maintenance. The layout of the bearing bush depends on the application, load conditions, and operational environment. --- **Related Articles:** - New Type of Wind Power Pitch Bearing Spray Equipment - Selection of Imported Bearings: Key Considerations - Characteristics of Rolling Bearings and Angular Contact Ball Bearings For more information, visit [China Bearing Network](http://www.chinabearing.net). Previous: Common Knowledge About FAG Bearings – Oscillations and Online Monitoring Systems for Rotary Axial Flow Main Fans

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