6910DU Sealed Ball Bearing50mm x 72mm x 12mm 6910DU Sealed Ball Bearing, 6910-DU bearing is made of Chrome Steel,6910DU bearing has Rubber seals to protect the bearing from dust or any possible contamination, 6910DU bearing is self lubricated bearings, 6910DU bearing is already greased. Item: 6910DU Ball Bearing Type: Deep Groove Ball Bearing Closures: 2 Rubber Seals Material: Chrome Steel Size: 50mm x 72mm x 12mm Inner Diameter: 50mm Outer Diameter: 72mm Width: 12mm Quantity: One Bearing Dynamic load rating Cr: 14,500 N Static load rating Cor: 11,700 N Limiting Speed: Grease Lubrication: 5,300 RPM