NBC 30205 25x52x16.25mm Tapered Roller Bearing

Roller bearings are components that allow two surfaces to slide over one another while reducing friction. They typically consist of two metal rings (cages) that house and support bearings (balls). Roller bearings are used in a variety of applications, including automotive drivetrains, construction equipment, material handling, and conveyors. NBC manufactures a variety of roller bearings with widths ranging from 16.25 mm to 52 mm. The bore diameter is the measurement of the hole in the middle of the bearing, and the outer diameter is the measurement of the ring on the outside of the bearing. The bearing number refers to the specific size and type of roller bearing. Roller bearings are available in a variety of enclosure types, including open and sealed. The lubrication enhancement refers to the amount of lubrication that is applied to the bearing. Radial internal clearance is the measurement of the space between the inner and outer rings of the bearing. The type of roller bearing will determine the applications it is best suited for