NSK 6211/C3 Open Single Row Deep Groove Ball Bearing 55x100x21mm

The NSK 6211-C3 is a premium single-row deep groove ball bearing with dimensions of 55mm bore x 100mm outside diameter x 21mm width, engineered for high-speed applications where thermal expansion and elevated operating temperatures demand enhanced internal clearances. Manufactured to NSK's stringent Japanese quality standards, this open-type bearing features the C3 radial internal clearance—a deliberately increased internal gap that accommodates thermal growth during operation, preventing unwanted preload and significantly reducing the risk of premature bearing failure. With a dynamic load rating of 47.5 kN and a static load rating of 29.3 kN, the NSK 6211-C3 provides robust support for both radial and axial loads in either direction with exceptionally low friction. The bearing delivers reliable performance at grease lubrication speeds up to 7,500 rpm and oil lubrication speeds up to 9,000 rpm, making it ideally suited for electric motors, pumps, compressors, gearboxes, transmissions, and high-speed drives where temperature fluctuations are common. Featuring a pressed steel cage and ten precision-ground 14.288mm balls, this bearing ensures consistent, low-vibration, and quiet operation across diverse industrial environments. For engineers and maintenance professionals requiring reliable performance under demanding thermal and speed conditions, the NSK 6211-C3 provides a proven, high-integrity solution that extends service life and minimizes costly downtime.