The NTN Bearing Corp J Series Steel Round Tapered Roller Bearing Cone is a versatile multi purpose bearing designed for optimal performance and durability. Precision manufactured using premium-grade steel, this bearing is designed to last. With industry-leading coverage for domestic and import applications, this bearing is the perfect choice for any application. The cone bore is 4" and the cone width is 1.625", making it the perfect size for any application. Get the performance and durability you need with the Round Tapered Roller Bearing Cone. FleetPride is your First Click in Heavy Duty®.