High Precision Double Sealed Self-Aligning Ball Bearing Series

Core Advantages and Selection Points

Handling Complex Working Conditions: The most significant advantage of this bearing series lies in its ability to automatically compensate for angular misalignment caused by mounting errors, shaft deflection, or housing misalignment. This significantly reduces additional loads and vibration, thereby extending equipment service life. Combined with high-precision manufacturing, it ensures smooth and low-noise operation at high speeds. The double-sided seals effectively block contaminants like dust and moisture, protecting the internal clean lubrication environment. This makes it particularly suitable for applications in dusty, humid, or cleanliness-critical situations

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Interpretation of Model Suffixes: Understanding the model suffixes is crucial during selection

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• 2RS / 2RS1: Indicates that the bearing is equipped with contact seals on both sides. These seals are typically made of steel-reinforced nitrile rubber (NBR)

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• C3: Signifies that the bearing's radial internal clearance is greater than the normal group (CN). It is suitable for applications where there is significant interference fit between the inner and outer rings or where large temperature differences cause expansion

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• P5 / P4: Represent precision grades higher than the standard grade (P0). A smaller number indicates a higher precision grade, making these bearings suitable for high-speed and low-vibration requirement scenarios

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Selection and Usage Considerations

Load Characteristics: This series of bearings is primarily designed to withstand radial loads. While they can also handle a certain amount of bidirectional axial loads, it is important to note that they cannot withstand pure axial loads

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Precision and Clearance Matching: Select the appropriate precision grade based on the operational accuracy and stability requirements of the equipment. Choose the suitable internal clearance (e.g., C0/CN, C3, etc.) according to the fit tolerances between the shaft and housing and the expected temperature rise during operation

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Operating Temperature: The commonly used temperature range for Nitrile Rubber (NBR) seals is generally -40°C to +100°C, and they can withstand even higher temperatures for short periods. If the environmental temperature exceeds this range, seals made from special materials should be considered

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