The SKF HE309 adapter sleeve is a high-quality, precision-engineered component designed for securely mounting spherical roller bearings with a tapered bore onto cylindrical shafts. This essential bearing accessory ensures precise fitment and reliable performance in a wide range of industrial and agricultural machinery applications. Manufactured by SKF, a global leader in bearing technology, the HE309 adapter sleeve is built for durability and optimal operational efficiency. It is compatible with specific SKF lock nuts (KM 9) and lock washers (MB 9) for a complete and secure assembly.