R830ZZ Shielded Wheel Ball Bearing, this is a popular size that could be used in many RC Cars and Trucks, Bearing is made of Chrome Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.

• Item: R830ZZ Ball Bearing
• Type: Deep Groove Ball Bearing
• Closures: 2 Metal Shields
• Lubrication: Self Lubricated (Grease)
• Size: 3mm x 8mm x 4mm
• Inner Diameter: 3mm
• Outer Diameter: 8mm
• Width: 4mm
• Quantity: One Bearing
• Dynamic load rating Cr: 550 N
• Static load rating Cor: 170 N
• Limiting Speed:
  • Grease Lubrication: 64,000 RPM