6404-2RS Sealed Ball Bearing, the inner diameter is 20mm, the outer diameter is 72mm and the width is 19mm, 6404-2RS Bearing is made of Chrome Steel,bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination,6404-2RS bearing is pre-lubricated with grease.

• Item: 6404-2RS Ball Bearing
• Type: Deep Groove Ball Bearing
• Closures: 2 Rubber Seals
• Lubrication: Self Lubricated (Grease)
• Dimensions: 20mm x 72mm x 19mm/Metric
• ID (inner diameter)/Bore: 20mm
• OD (outer diameter): 72mm
• Width/Height/thickness: 19mm
• Size: 20 x 72 x 19 mm
• Quantity: One Bearing
• Dynamic load rating Cr: 31,000 N
• Static load rating Cor: 15,200 N
• Limiting Speed:
  • Grease Lubrication: 11,000 RPM