NSK 6211-2Z/C3 Metal Shielded Single Row Deep Groove Ball Bearing 55x100x21mm

The NSK 6211-2Z-C3 is a premium single-row deep groove ball bearing, with key dimensions of a 55mm bore, 100mm outside diameter, and 21mm width. Manufactured to exacting Japanese quality standards, this bearing is shielded on both sides with non-contact metal shields (2Z), which effectively keep out larger contaminants while retaining the lubricating grease and minimizing frictional drag for high-speed operation. The C3 radial internal clearance denotes a larger-than-normal internal gap, specifically designed to accommodate thermal expansion that occurs during high-speed or high-temperature running, thereby preventing internal preload and ensuring consistent performance. This bearing delivers reliable, low-vibration performance with a dynamic load rating of 46.2 kN and a static load rating of 29 kN. With a limiting speed of approximately 8,000 rpm, the 6211-2Z-C3 is ideally suited for electric motors, pumps, gearboxes, and general industrial machinery where a balance of contamination protection, high-speed capability, and thermal management is required.