NSK 6209-2RS/C3 Rubber Sealed Single Row Deep Groove Ball Bearing 45x85x19mm

The NSK 6209-2RS-C3 is a precision deep groove ball bearing (45x85x19mm) engineered for demanding applications requiring both superior contamination protection and enhanced thermal clearance. Manufactured to NSK's stringent Japanese quality standards, this bearing features contact rubber seals on both sides (2RS) that provide an effective barrier against moisture, dust, and abrasive particles while securely retaining the factory-applied grease for extended lubrication intervals. The C3 radial internal clearance accommodates thermal expansion during high-speed operation, preventing unwanted preload and ensuring consistent performance under fluctuating temperatures. This combination of robust sealing and optimized clearance makes the 6209-2RS-C3 particularly well-suited for electric motors, pumps, agricultural machinery, material handling equipment, and automotive applications where both environmental exposure and thermal variation are concerns. Constructed from premium bearing steel with optimized raceway geometry, this sealed bearing delivers reliable, low-vibration operation and extended service life, providing engineers and maintenance professionals with a durable, fit-and-forget solution for challenging operating conditions.