12 x 21 x 6 Shielded Ball Bearing, This ball bearingis made of Chrome Steel, and is Metal Shielded from both sides, inner diameter is 12mm, outer diameter is 21mm, and width is 6mm.

• Item: 12 x 21 x 6 Ball Bearings
• Type: Deep Groove Ball Bearings
• Material: Chrome Steel
• Closures: 2 Metal Shields
• Size: 12mm x 21mm x 6mm
• Inner Diameter: 12mm
• Outer Diameter: 21mm
• Width: 6mm
• Quantity: One Bearing
• Dynamic load rating Cr: 1,920 N
• Static load rating Cor: 1,040 N
• Limiting Speed:
  • Grease Lubrication: 32,000 RPM