Barrel Roller Bearings FAG 20228 -K-MB-C3

The 20228 -K-MB-C3 spherical roller bearing from FAG Wälzlager, with a 140 mm bore and an outer diameter of 250 mm, provides angular misalignment compensation under high radial loads.

This single-row 20228 -K-MB-C3 spherical roller bearing absorbs high radial forces and compensates for misalignment between the shaft and housing with angular movement. Thanks to its barrel-shaped rolling elements, the bearing is particularly suitable for heavy-duty shaft mountings where deflection or misalignment occurs. The design combines standardised dimensions with high radial load-carrying capacity under demanding operating conditions.

What loads does the 20228 -K-MB-C3 barrel bearing accommodate?

The main function of this bearing is to accommodate high radial forces whilst allowing for misalignment of the bearing axis. In the case of shafts subject to elastic deflection, the spherical outer ring raceway counteracts harmful edge pressures on the rolling elements. The solid brass cage guides the rollers stably within the raceway, even in the presence of vibrations or shock-like radial forces. As the bearing is of an open design, lubricant can circulate freely within the housing and dissipate heat.

When is the combination of a tapered bore and C3 clearance appropriate?

The tapered inner ring bore with a taper ratio of 1:12 allows for a fixed mounting directly onto tapered shaft seats or, using adapter sleeves, onto cylindrical shafts. When pushed axially onto the taper, the inner ring expands, which reduces the internal bearing clearance during operation. The factory-set C3 bearing clearance compensates for this reduction and allows sufficient room for thermal expansion within a temperature range of -30 to +200 degrees Celsius.