Thick-walled outer ring tapered roller bearings These ready-to-install double row bearing units can withstand axial and radial forces, Figure 4. Design one piece thick wall outer ring with mounting holes. Due to the thick outer ring, the bearing can be mounted directly on the wall. No additional bearing housing is required. Internal clearance Internal clearance is specifically defined by the Schaeffler Group. Preloaded tapered roller bearings TBS have zero clearance after installation and have high radial and axial rigidity. Therefore, it is very suitable as a positioning bearing for a non-moving cylinder, such as a transfer cylinder of a sheetfed offset press. Seals are available in open or integrated seal designs. Lubrication This bearing can be relubricated through the lubrication hole in the outer ring. Matched tapered roller bearings Single row tapered roller bearings are usually used in O-type precision matching through intermediate spacers, Figure 5. In this way, the axial clearance tolerance of this bearing is very small. Usually, a bearing housing is required. Internal clearance Internal clearance is specifically defined by the Schaeffler Group. Preload This bearing arrangement has zero clearance after installation and can withstand radial and axial forces. Also suitable as a locating bearing for non-moving drums. Sealing This bearing unit is an open design. A seal can be designed around the perimeter structure. Lubricated paired tapered roller bearings can be lubricated with oil or grease. Relubrication is possible through the lubrication holes in the outer ring.