Self-aligning ball bearings, cylindrical roller bearings and spherical roller bearings in particular are designed with a conical bore (suffix "K") for easier mounting and more precise adjustment of the internal clearance. If you do not want to design a conical bearing seat and complex hydraulic channels on the shaft, clamping and withdrawal sleeves are available.
Clamping sleeves are slotted steel sleeves and are used for mounting bearings with conical bore on cylindrical shafts. Accordingly, they have a cylindrical bore and a tapered outer surface. In order to slide the bearings on, clamping sleeves have a thread on the smaller cone diameter for screwing on a grooved nut, which after assembly, together with a locking element (locking plate or locking clip), also assumes the function of the fastening element.
Withdrawal sleeves are slotted steel sleeves and are used for fastening bearings with a conical bore on cylindrical shafts. Accordingly, they have a cylindrical bore and a tapered outer surface. In contrast to clamping sleeves, withdrawal sleeves are only suitable for being pushed under the bearing. The thread for screwing on a grooved nut, which also takes over the function of the locking element after assembly, is therefore located on the larger cone diameter.
Grooved Nuts, Lockclips & Safety Plates
Grooved nuts can be ordered separately as a supplement to a withdrawal sleeve or as an axial bearing locking device on a shaft. Grooved nuts are standardised in DIN 981; safety plates and lockclips in DIN 5406.
Due to various possible applications and mounting conditions, grooved nuts often have special designs. Grooved nuts are often reinforced and provided with axially continuous mounting threads or mounting holes for mounting tools. The standard nut with the standard locking element can be found in the product tables. All deviations from this are to be requested.