This adapter sleeve provides a cylindrical mounting seat for a bearing with a tapered bore, allowing the inner ring to be fitted directly onto a plain cylindrical shaft. The bore diameter is 60.0 mm, net mass is 0.415 kg, and the design is standard, matching the FP mechanical accessory execution. Fitting the bearing onto the sleeve rather than machining a tapered shaft seat simplifies mounting and dismounting, since the sleeve is drawn up along the shaft to expand the tapered bore and create the required internal fit. This construction is suited to applications where the shaft is manufactured to standard cylindrical tolerances and where periodic bearing removal is required without re-machining the shaft seat.