This sleeve provides a mechanical connection between a bearing with a tapered bore and a cylindrical shaft, allowing the bearing to be mounted at any point along the shaft length without a stepped seating. The bore diameter is 30.0 mm and the net mass is 0.18 kg, in standard design, complete and ready for mechanical fitting. Tightening the sleeve onto the shaft draws the bearing inner ring up the taper, generating the radial internal clearance reduction needed for a secure fit and allowing precise control of the mounting position. This design simplifies dismounting compared with a directly tapered shaft seat and is suited for applications where the bearing must be positioned freely on a plain cylindrical shaft.