Spherical roller bearings are divided into: a cylindrical bore, tapered bore.

    Tapered bore taper 1:12, respectively, the post code for the K,-aligning roller bearings (153 000 type or 113 000-type) and 1:30 of the post code for the K30 self-aligning roller bearings. This type of bearing shaft with a conical distribution, the inner ring can be adjusted along the axial movement of the bearing radial clearance.