Ball Bearings 6001DU12 x 28 x 8 mmOne Bearing 6001-DU Ball Bearing, 6001DU inner diameter is 12mm, 6001DU Bearing outer diameter is 28mm and Bearing 6001DU width is 8mm, Ball Bearing 6001DU is a popular size that could be used in many applications, 6001DU Ball Bearings are made of Chrome Steel and can rotate up to 12,000 rpm, each 6001DU bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, the 6001DU bearings are pre-lubricated with grease. Item: 6001DU Ball Bearing Type: Deep Groove Ball Bearing Material: Chrome Steel Closures: Rubber Seals Lubrication: Self Lubricated (Grease) Size: 12mm x 28mm x 8mm Inner Diameter: 12mm Outer Diameter: 28mm Width: 8mm Quantity: One Bearing Dynamic load rating Cr: 5,100 N Static load rating Cor: 2,390 N Limiting Speed: Grease Lubrication: 18,000 RPM