Product Description Pack of 2 6203ZZ Ball Bearings 17 x 40 x 12 mm Pack of 2 6203ZZ Ball Bearings, 6203ZZ Bearings are made of Chrome Steel, 6203ZZ bearing has 2 metal shields to protect the bearing from dust or any possible contamination, 6203ZZ bearings are pre-lubricated with grease. * Item: 6203ZZ Ball Bearings * Type: Deep Groove Ball Bearings * Size: 17mm x 40mm x 12mm * Material: Chrome Steel * Closures: 2 Metal Shields 6203Z * Lubrication: Self Lubricated (Grease) * Quantity: Pack of 2 Bearings * Dynamic load rating Cr: 9,550 N * Static load rating Cor: 4,800 N * Limiting Speed: * Grease Lubrication: 18,000 RPM * Equivalents: 203KDD, 203SS, 6203.2ZR, 203SFF 6203-2Z and 6203ZZE