The SKF HM3068 is a genuine adapter sleeve designed for securely locating bearings with a tapered bore onto cylindrical shafts. This essential component facilitates easy mounting on both smooth and stepped shafts, eliminating the need for additional shaft location means. When used on smooth shafts, the bearing can be positioned anywhere, while on stepped shafts with an L-shaped spacer ring, it ensures accurate axial positioning and optimal bearing support. Key dimensions include a 320 mm bore diameter and a 110 mm width. It is compatible with KM 68 lock nuts and MB 68 lock washers.