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4an 02-series single-row deep-groove ball bearing. Grease These bearings are pre-lubricated with a high-quality grease, which provides excellent lubrication and reduces the risk of bearing failure due to lack of lubrication. The grease is sealed within the bearing to prevent contamination and ensure long-term performance.

The size chart begins with the basic dimensions, which include the diameter of the inner raceway, the outer diameter of the bearing, and its overall thickness. The inner diameter governs the shaft size it can fit onto, while the outer diameter determines the housing or mounting surface it will fit into. The thickness, or width, influences the bearing's load-carrying capacity The thickness, or width, influences the bearing's load-carrying capacity The thickness, or width, influences the bearing's load-carrying capacity The thickness, or width, influences the bearing's load-carrying capacityneedle roller thrust bearing size chart.