Category: Self-aligning ball bearings (1200/1300/2200/2300 series). Featuring a double row of steel balls and a spherical raceway on the outer ring, these bearings utilize steel cages and specialized high-temperature lubrication, enabling continuous operation at temperatures up to 300°C.
✅ Key Advantages
1. Self-Aligning Capability (Primary Feature) The spherical outer raceway automatically compensates for angular deviations caused by shaft deflection, installation misalignment, or thermal expansion. This is a significant advantage over standard deep-groove ball bearings—which are prone to seizing or overheating under such conditions—as these bearings can accommodate a specific degree of misalignment. 2. Stable Operation at 300°C Constructed with high-temperature alloy steel and steel cages, and paired with perfluoropolyether (PFPE) high-temperature grease (with the option to include PTFE solid lubricant), these bearings remain stable between -40°C and 300°C. The lubricant is highly resistant to leakage and carbonization at high temperatures, preventing the rapid degradation typical of standard greases. They are well-suited for environments with sustained high temperatures or frequent thermal cycling. 3. Load-Bearing Characteristics Primarily designed for radial loads, they can also accommodate limited bi-directional axial loads. With a low coefficient of friction and controlled temperature rise, they are ideal for low-to-medium rotational speeds and light-to-medium load applications. (Note: Not suitable for heavy-duty or high-impact conditions; for such environments, spherical roller bearings are recommended.) 4. Maintenance-Friendly and Suitable for Continuous Production Lines Select models feature lubrication grooves or relubrication holes, allowing for in-service grease replenishment. Their simple design facilitates easy installation and removal. They offer a cost-effective alternative to specialized imported high-temperature bearings. 5. Vibration Resistance and Smooth Operation The double-row ball design ensures low operating noise, making them an excellent choice for equipment requiring smooth, stable performance—such as high-temperature industrial fans, drying drums, and various conveying or air-handling systems.
Limitations: Rated for a maximum temperature of 300°C and light-to-medium loads; not suitable for high rotational speeds or heavy-duty, high-impact applications. 📌 Typical Applications
1. Drying and Coating Industries: Conveyor rollers for drying tunnels, roller conveyors for paint-curing lines, bearings for drying oven conveyor belts, and hot-air circulation fans. 2. Building Materials / Ceramics / Brick & Tile: Kiln cars, kiln conveyor rollers, and production lines for refractory materials. 3. Heat Treatment and Heat-Treatment Furnaces: In-furnace conveying mechanisms and roller conveyors for annealing furnaces. 4. Light Industry: Drying cylinders for papermaking, and heat-setting rollers for textile printing and dyeing. 5. Hot-Air Equipment: High-temperature induced-draft fans, hot-air blowers, and high-temperature dust-extraction fans. 6. Food and Feed Drying Equipment. 7. Others: Auxiliary conveying systems for small-scale metallurgical operations and thermal-forming equipment for plastics.
