6203DU Sealed Ball Bearing17 x 40 x 12 mm 6203DU Sealed Ball Bearing, the inner diameter is 17mm, outer diameter is 40mm and the width is 12mm, Bearing is made of Chrome Steel, each bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease. Item: 6203-DU Ball Bearing Type: Deep Groove Ball Bearing Material: Chrome Steel Closures: Rubber Seals Lubrication: Self Lubricated (Grease) Dimensions: 17mm x 40mm x 12mm/Metric Inner Diameter: 17mm Outer Diameter: 40mm Width: 12mm Size: 17 x 40 x 12 mm Dynamic load rating Cr: 9,550 N Static load rating Cor: 4,800 N Limiting Speed: Grease Lubrication: 12,000 RPM Quantity: One BearingVXB