Different Types of Plastic Bearings

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Plastic bearings are widely used in various industrial applications due to their unique properties such as corrosion resistance, low friction, and lightweight. Here are some of the different types of plastic bearings and their features: 1. **Corrosion-Resistant Plastic Bearings** These bearings are designed to operate in harsh environments where exposure to acids, alkalis, salt, solvents, oils, gases, and seawater is common. They offer excellent durability and a long service life, making them ideal for use in medical and food industries where hygiene and chemical resistance are critical. 2. **Precision Plastic Bearings** Unlike traditional plastic bearings, precision plastic bearings are manufactured with higher accuracy and better performance. They are suitable for high-speed and fine-motion applications. These bearings often use materials like POM (Polyoxymethylene), PPS (Polyphenylene Sulfide), or PEEK (Polyether Ether Ketone) for the inner and outer rings, while the rolling elements can be made from glass balls, stainless steel balls, or ceramic balls. This combination ensures smooth operation and increased efficiency. 3. **High-Temperature Resistant Plastic Bearings** Materials such as PVDF (Polyvinylidene Fluoride), PTFE (Teflon), PPS, PEEK, and PI (Polyetherimide) are commonly used to manufacture plastic bearings that can withstand extreme temperatures. Among these, PI stands out for its ability to function continuously at temperatures up to 290°C and briefly tolerate temperatures as high as 350°C. It is considered one of the best engineering plastics for high-temperature applications.

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