304SFF Shielded Ball Bearing, material is Chrome steel, 304SFF is Electric motor quality, each 304SFF bearing is closed with 2 Metal Shields, one Shield from each side, to protect the bearing from dust or any possible contamination, also 304SFF bearing is pre-lubricated with grease.

• Item: 304SFF Ball Bearing
• Lubrication: Self Lubricated (Grease)
• Quantity: One Bearing
• Closures: Double Metal Shields
• Type: Deep Groove Ball Bearing
• Cage: Chrome Steel
• Material: Chrome Steel
• Dimensions: 20mm x 52mm x 15mm/Metric
• inner Diameter (ID): 20mm
• outer diameter (OD): 52mm
• Width/Height/Breadth (W/H/B): 15mm
• Dynamic load rating Cr: 15,900 N
• Static load rating Cor: 7,900 N
• Limiting Speed:
  • Grease Lubrication: 14,000 RPM