NSK 221EKTNG Double-Row Self-Aligning Ball Bearing

Description:

The NSK 221EKTNG Bearing is a double-row self-aligning ball bearing used to support rotating shafts while compensating for shaft misalignment in industrial power transmission systems. Commonly installed in electric motors, conveyors, agricultural machinery, pumps, fans, textile equipment, and general industrial machinery requiring a 52 × 90 × 23 mm self-aligning bearing. Maintenance teams and system integrators use this bearing for equipment replacement, preventive maintenance, and restoration of smooth, reliable shaft operation.

Applications:

The NSK 221EKTNG Bearing is commonly used in electric motors, conveyor systems, packaging machinery, agricultural equipment, industrial fans, pumps, machine tools, and material handling equipment where self-alignment, low-friction operation, and reliable radial load support are required. Its self-aligning design helps compensate for shaft deflection and mounting inaccuracies, reducing bearing stress and extending equipment service life.

Technical Specifications:

• Brand: NSK
• Part Number: 221EKTNG
• Product Type: Double-Row Self-Aligning Ball Bearing
• Bearing Type: Self-Aligning Ball Bearing
• Bore Diameter (ID): 50 mm (nominal series specification)
• Outside Diameter (OD): 90 mm
• Width: 23 mm
• Bore Type: Tapered Bore (1:12 Taper)
• Ball Rows: Double Row
• Cage Material: Polyamide (TNG Cage)
• Seal Type: Open Bearing (No Seals)
• Radial Internal Clearance: CN (Normal)
• Material: High-Carbon Chromium Bearing Steel
• Lubrication: Grease or Oil Lubricated
• Operating Temperature Range: -30°C to +120°C
• Suitable for applications requiring automatic compensation for shaft misalignment.

Common Replacements:

• SKF 2210 EKTN9
• FAG 2210-K-TVH-C3
• NTN 2210SK C3