The NKE H309 Tapered Sleeve, also known as an adapter sleeve, is designed for securely mounting bearings with a tapered bore onto cylindrical shafts. This genuine NKE component ensures precise fitment and reliable performance in various industrial and agricultural machinery applications. It features a 40 mm shaft diameter, a 50 mm bearing bore diameter, and a width of 38 mm, compatible with KM9 locknuts and MB9 lockwashers.