Product Description R8ZZ Shielded Ball Bearings 1/2" x 1 1/8" x 5/16" inch Lot of 10 Bearings R8ZZ Shielded Ball Bearings, the inner diameter is 1/2", outer diameter is 1 1/8" and width is 5/16", R8ZZ are a popular size that could be used in many applications, Bearings are made of Chrome Steel each R8ZZ bearing has 2 metal shields to protect the bearing from dust or any possible contamination, R8ZZ bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube. * Item: R8ZZ Ball Bearings * Type: Deep Groove Ball Bearings * Closures: 2 Metal Shields * Lubrication: Self Lubricated (Grease) * Dimensions: 1/2" x 1 1/8" x 5/16" English Size * ID (inner diameter)/Bore: 1/2" inch * OD (outer diameter): 1 1/8" inch * Width/Height/thickness: 5/16" inch * Quantity: 10 Bearings * Dynamic load rating: 1,148 LBS * Static load rating: 535 LBS * Packing: 10 bearings in One plastic tube * Equal: R8-2Z &-R8ZZ