Specification Brand : Koyo BulletPoint : NRB Drawn Cup Full Complement BulletPoint1 : Inner ring to provide a hardened and ground raceway for a needle roller bearing BulletPoint2 : Use with Koyo Torrington HJ Type heavy duty needle roller bearings (sold separately) BulletPoint3 : Oil hole for applying lubrication in place BulletPoint4 : Through-hardened, high-carbon chromium steel rollers for heat tolerance and durability under heavy loads BulletPoint5 : Meets standards DIN 618-1 and ISO 3245 for quality assurance ExternallyAssignedProductIdentifier1 : 605790199684 ExternallyAssignedProductIdentifier2 : 0605790199684 ExternallyAssignedProductIdentifier3 : 0035373165162 ExternallyAssignedProductIdentifier4 : 00035373165162 ExternallyAssignedProductIdentifier5 : 04047643196369 IncludedComponents : Needle Bearing ItemName : Koyo IR-202420 Inner Ring, IR Type, Oil Hole, Inch, 1-1/4" ID, 1-1/2" OD, 1-1/4" Width ItemPackageDimensions_Height : 3.81 centimeters ItemPackageDimensions_Length : 5.334 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : needle-roller-bearings Manufacturer : Koyo Torrington Material : Steel ModelNumber : IR-202420 NumberOfItems : 1 PackageLevel : unit PartNumber : IR-202420 ProductDescription : Thrust Needle Roller Bearings In applications where the faces of adjacent machine components can serve as raceways, needle roller thrust bearings take up no more space than a conventional thrust washer. Needle bearings are usually lubricated with grease, but oil or oil-mist lubrication is preferred for heavy-duty or high-speed applications. A needle roller bearing is a bearing that uses small cylindrical rollers. These rollers are used to reduce friction of a rotating surface. Can be combined with washers, make objects rotating smooth! Can serve as raceways between the faces of adjacent machine components. Can be used as inner or outer raceways