Lot of 10 Ball Bearings, the inner diameter is 12, outer diameter is 28 and the width is 8, this is a popular size that could be used in many applications, Bearings are made of Chrome Steel and can rotate up to 23000 rpm, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube.

• Item: Double Shielded Ball Bearings
• Size: 12mm x 28mm x 8mm
• Type: Deep groove ball bearings
• Closures: 2 Metal Shileds
• Lubrication: Self Lubricated (Grease)
• Quantity: 10 Bearings
• Dynamic load rating Cr: 5,100 N
• Static load rating Cor: 2,390 N
• Limiting Speed:
  • Grease Lubrication: 28,000 RPM
• Packing: 10 bearings in 1 plastic tube