Tapered Roller Bearings FAG 32018 -X

The P0 classification corresponds to the international standard class for rolling bearings, comparable to the US ABEC 1 classification. It defines the permissible dimensional and runout tolerances for the outer and inner rings. For the vast majority of industrial applications, this tolerance class provides sufficient concentricity for gearboxes or general shaft bearings.

The 32018-X tapered roller bearing has a permissible temperature range of -30 to +120 degrees Celsius. Within these limits, the rolling elements, the bearing rings and the integrated sheet steel cage retain their dimensional stability. For this temperature range, always select a lubricant whose specifications are suitable for the respective operating temperature and the prevailing operating speeds.

The separate design of the outer ring and inner ring with roller set is dictated by the design. You fit both rings onto the shaft and housing independently of one another. This simplifies assembly in the case of press fits. Once the components have been joined, you can set the desired bearing clearance or preload by adjusting the bearing against a second bearing.

The sheet steel cage keeps the conical rollers at a uniform distance from one another and prevents the rolling elements from coming into direct contact with one another. This reduces friction and noise during operation. Thanks to its open design, the cage allows sufficient space for grease or lubricating oil to be distributed between the raceways.

Unlike many other types of bearing, single-row tapered roller bearings do not have a fixed clearance set at the factory. The operating clearance or a slight preload is only set during assembly. This is usually achieved by axially shifting the rings relative to one another using shaft nuts, shims or housing covers.