Y-bearings with a tapered bore
Y-bearings with a tapered bore (fig. 1) have an inner ring symmetrically extended on both sides and a tapered bore (taper 1:12) enabling them to be mounted on a standard H 23 series adapter sleeve. Mounting onto an adapter sleeve enables the bearings to run smoothly and the full limiting speed can be achieved, even when using commercial grade shafts. The bearings can be used in applications for both constant and alternating direction of rotation. The appropriate adapter sleeve is not part of the bearing and must be ordered separately.
Y-bearings with a tapered bore, series designation YSA 2, are equipped with a rugged standard seal, fitted with an additional plain sheet steel flinger on both sides (→ Standard seals with additional flingers). The outer ring has two lubrication holes as standard, one on each side, positioned 120° apart. Bearings without lubrication holes can be supplied on request (designation suffix W).
SKF Y-bearings in the YSA 2 series are available with bore diameters ranging from 25 to 65 mm, which fit adapter sleeves in the H 23 series for metric shafts ranging from 20 to 60 mm. These bearings can also be used on adapter sleeves in the HA 23 and HE 23 series for inch shafts ranging from 3/4 to 2 1/4 inches.