R1810ZZ Shielded Ball Bearing 5/16" x 1/2" x 5/32" R1810ZZ Shielded Ball Bearing, this is a popular size that could be used in many applications, the inner diameter is 5/16" inch, outer diameter is 1/2" inch and the width is 5/32" inch, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease. * Item: R1810ZZ Ball Bearing * Type: Deep Groove Ball Bearing * Shields: 2 Metal Shields * Lubrication: Self Lubricated (Grease) * Dimensions: 5/16" inch x 1/2" inch x 5/32" inch English Size * ID (inner diameter)/Bore: 5/16" inch * OD (outer diameter): 1/2" inch * Width/Height/thickness: 5/32" inch * Size: 5/16" x 1/2" x 5/32" * Quantity: One Bearing * Dynamic load rating: 54.2 KGF * Static load rating: 27.6 KGF * Equal: R1810-2Z &-R1810ZZ