30210 is nachi single row tapered roller bearing, the cage is Chrome Steel, 30210 inner diameter is 50mm, 30210 outer diameter is 90mm and 30210 width is 20mm.

• Item: 30210 Nachi Ball Bearing
• Type: Nachi Tapered Roller Ball Bearing
• Cage: Chrome Steel
• Dimensions: 50mm x 90mm x 20mm/Metric
• ID (inner diameter)/Bore: 50mm
• OD (outer diameter): 90mm
• Width/Height/thickness: 20mm
• Size: 50 x 90 x 20 mm
• Quantity: One Bearing
• Dynamic load rating Cr: 76,500 N
• Static load rating Cor: 91,700 N
• Limiting Speed:
  • Grease Lubrication: 4,300 RPM
  • Oil Lubrication: 5,700 RPM
• Made in Japan