NTN Bower H715348HD is a tapered roller bearing cone with a 77.788 mm inside diameter and a 46.038 mm cone width, from catalog series H715300 and built to ABMA Class 4 (Inch) tolerance. The bearing designation is H715348HD. The cone is the inner ring that carries the rollers and their cage, and it works as a pair with its matching cup, so the bore and width are the first numbers to check against your bearing seat. A cone that is wearing out shows flaking or pitting on the roller path, and wear at the cone rib and roller ends opens up end play. A genuine NTN Bower part from Pro Gear and Transmission.Interchanges:Timken H715348$533.16FeaturesBearing designation: H715348HDInside diameter: 77.788 mmCone width: 46.038 mmCatalog series H715300, ABMA Class 4 (Inch) tolerance classInner ring of a tapered roller bearing, carrying radial and thrust load together with its cupTech SpecsBearing designation: H715348HDInside diameter: 77.788 mmCone width: 46.038 mmCatalog series: H715300Tolerance class: ABMA Class 4 (Inch)