A roller bearing having a tapered bore is mounted on a straight shaft using either an Adapter Sleeve assembly, or a Withdrawal Sleeve. Mounting a bearing on a sleeve also permits maximum flexibility in the axial positioning of the bearing on the shaft and can accommodate light locational thrust loads.
Both the Adapter and the Withdrawal Sleeves have cylindrical bore and tapered outer surface, with threading on one side of the outer surface, and are slit along the length. While the Adapter Sleeve has the threading on the small diameter side of the taper, the Withdrawal Sleeve has the threading on the larger diameter side. Thus, the Adapter Sleeve facilitates easy mounting of the bearing, while the Withdrawal Sleeve is normally used to ensure easy dismounting of the bearing, hence it's name.

A roller bearing having a tapered bore is mounted on a straight shaft using either an Adapter Sleeve assembly, or a Withdrawal Sleeve. Mounting a bearing on a sleeve also permits maximum flexibility in the axial positioning of the bearing on the shaft and can accommodate light locational thrust loads.
Both the Adapter and the Withdrawal Sleeves have cylindrical bore and tapered outer surface, with threading on one side of the outer surface, and are slit along the length. While the Adapter Sleeve has the threading on the small diameter side of the taper, the Withdrawal Sleeve has the threading on the larger diameter side. Thus, the Adapter Sleeve facilitates easy mounting of the bearing, while the Withdrawal Sleeve is normally used to ensure easy dismounting of the bearing, hence it's name.