SKF Double Row Angular Contact Ball Bearing Type Suffix Explained

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The SKF double row angular contact ball bearing type suffix is a key element in identifying the specific features and performance characteristics of the bearing. Understanding these suffixes helps in selecting the right bearing for your application. Here's a detailed breakdown of common suffixes: - **A**: No fill slot - **CB**: Adjusted axial internal clearance - **C2**: Axial clearance smaller than standard - **C3**: Axial clearance larger than standard - **D**: Split inner ring - **E**: Largest type of bearing with filled slots - **HT51**: Designed for high-temperature greases operating between -30°C and 140°C - **J1**: Steel cage with ball guidance - **M**: Machined copper cage with ball guidance - **MA**: Machined copper cage with outer ring guidance - **MT33**: Lithium-based thickener with operating temperatures from -30°C to -120°C; NLGI grade 3 (standard filling) - **N**: Outer ring with snap ring groove - **NR**: Outer ring with snap ring groove and snap ring - **P5**: Precision meets ISO class 5 standards - **P6**: Precision meets ISO class 6 standards - **P62**: P6 + C2 - **P63**: P6 + C3 - **TN9**: Fiberglass-reinforced nylon 66 cage with ball guidance - **2RS1**: Bearings with nitrile rubber seals and steel reinforcement on both sides - **W64**: Solid oil-filled bearings - **2Z**: Bearings with stamped steel dust covers on both sides (non-contact seals) Some bearing numbers include a prefix such as **BA2B**, which indicates that the bearing is a double-row angular contact ball bearing. This information is essential for engineers, technicians, and buyers who need to choose the correct bearing for their machinery or equipment. Proper selection based on these suffixes ensures optimal performance, longevity, and reliability.

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