NSK 221EKTNG Double-Row Self-Aligning Ball Bearing

The NSK 221EKTNG is a double-row self-aligning ball bearing that accommodates shaft misalignment in industrial power transmission systems, delivering reliable radial load support for rotating equipment. It has a 50 mm bore, 90 mm outside diameter, and 23 mm width, with a tapered bore of 1:12, double-row configuration, polyamide (TNG) cage, and an open bearing design with CN radial clearance, manufactured in high-carbon chromium bearing steel and suitable for grease or oil lubrication from -30°C to +120°C. Its self-aligning design compensates for shaft deflection and mounting inaccuracies, reducing bearing stress and extending equipment service life. Commonly used in electric motors, conveyors, agricultural machinery, pumps, industrial fans, packaging machinery, textile equipment, machine tools, and material handling equipment where self-alignment and low-friction operation are needed, maintenance teams and system integrators rely on it for equipment replacement, preventive maintenance, and restoring smooth shaft operation; common replacements include SKF 2210 EKTN9, FAG 2210-K-TVH-C3, NTN 2210SK C3.