This aftermarket replacement part (Model: 035-48979) is a 1" Flange Bearing compatible with relevant trailer models. With 1" inner bore diameter, 2.5" flange outer diameter, 0.75" width, and carbon steel construction, it is designed to fit the lower shaft and upper shank of dump trailer systems (see full compatibility list). The 1" Flange Bearing provides stable rotational support for moving components, reducing friction between the lower shaft, upper shank, and trailer frames—effectively resolving issues caused by worn or damaged bearings (such as stiff shaft rotation, uneven shank movement, excessive noise, or structural wear to trailer parts). Made of high-strength carbon steel with a single shielded (Z) design, it resists dust, gravel, and road debris common in trailer operation. It meets industrial bearing standards for load capacity, ensuring reliable performance in heavy-duty dump trailer applications.