Bearings on sleeves
Self-aligning ball bearings with a tapered bore can be mounted on plain or stepped shafts with an adapter sleeve (fig. 1 and fig. 2) or on stepped shafts with a withdrawal sleeve (fig. 3). Adapter sleeves are supplied complete with a locking device. For additional information about sleeves, refer to Bearing accessories.
Adapter sleeves are more popular than withdrawal sleeves as they do not require axial locating devices on the shaft. Therefore, only adapter sleeves are listed together with the suitable bearings in this section.
When using sealed self-aligning ball bearings on an adapter sleeve, the locking device must not interfere with the seal. To avoid this, use an appropriate SKF adapter sleeve assembly, as listed in the product table. Sealed bearings use either a standard sleeve or an E design sleeve (fig. 4). Alternatively, a spacer ring can be inserted between the bearing and the lock washer.
Bearing / adapter sleeve kitsTo facilitate procurement and to provide the correct bearing / sleeve combination, SKF offers kits for the most popular sizes, containing the self-aligning ball bearing together with the suitable adapter sleeve assembly.
These kits are listed in table 1. The technical data for bearings and sleeves are listed in the relevant product tables.