Specification Brand : Koyo 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 : Country of origin: United States BulletPoint5 : Meets standards ANSI/ABMA 18.1, DIN 618, and ISO 3245 for quality assurance Color : silver ExternallyAssignedProductIdentifier1 : 605790212406 ExternallyAssignedProductIdentifier2 : 0605790212406 ExternallyAssignedProductIdentifier3 : 00605790212406 IncludedComponents : Inner ring ItemName : Koyo IR-232820 Inner Ring, IR Type, Oil Hole, Inch, 1-7/16" ID, 1-3/4" OD, 1-1/4" Width ItemPackageDimensions_Height : 3.302 centimeters ItemPackageDimensions_Length : 5.334 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : needle-roller-bearings Manufacturer : Koyo Material : Steel ModelNumber : HK0709 NumberOfItems : 1 PartNumber : IR-232820 ProductDescription : Needle roller bearings are equipped with thin and long rollers (the length of the rollers is 3-10 times the diameter, and the diameter is generally not greater than 5mm), so the radial structure is compact. Its inner diameter size and load capacity are the same as other types of bearings, and its outer diameter is the smallest. It is particularly suitable for support structures with limited radial installation dimensions. The machining accuracy and surface quality of needle roller bearings should be combined with the bearing ring and purpose according to different usage scenarios. Needle roller bearings are bearing units composed of radial needle roller bearings and thrust bearing components.