NSK 6210/C3 Open Single Row Deep Groove Ball Bearing 50x90x20mm

The NSK 6210-C3 is a premium single-row deep groove ball bearing (50mm bore x 90mm outside diameter x 20mm width) engineered for applications where thermal expansion and elevated rotational speeds 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 reducing the risk of premature failure under fluctuating temperatures. With a dynamic load rating of 35 kN and a static load rating of 23.2 kN, the 6210-C3 supports both radial and axial loads in either direction with minimal friction, delivering reliable performance at speeds up to 8,000 rpm with grease lubrication and 10,000 rpm with oil lubrication. The bearing features a pressed steel cage and is ideally suited for electric motors, pumps, compressors, gearboxes, and high-speed drives where both thermal variation and operational stability are key concerns.