The 3578/3525 RICH is a heavy-duty Single Row Tapered Roller Bearing manufactured by RICH. Tapered roller bearings are uniquely designed to manage extremely high combined radial and axial loads simultaneously. This model, consisting of the 3578 outer ring (cup) and the 3525 inner ring (cone) assembly, measures 44.45 mm inner diameter, 87.312 mm outer diameter, and 30.162 mm total width.
The tapered rollers and raceways are arranged so that the axis of the rollers and the raceways intersect at a common point on the bearing axis. This geometry provides true rolling motion and enables the bearing to handle heavy loads, making it highly effective in applications such as automotive wheels, heavy machinery gear drives, and industrial transmissions. The bearing is separable, meaning the cup and cone assembly can be mounted independently. Since single row tapered bearings can only take axial load in one direction, they are typically used in pairs and adjusted to achieve the necessary operating clearance.
Data sheet