Adapter Sleeve are the components which increases your bearing life by giving it a proper sitting. Adapter sleeve are the generally used components for locating bearings with a tapered bore into a cylindrical seats they can be used on a simple or step by step shafts. This is cylindrical structure and industrial approved design. The sleeves are slit and supplied complete with a lock nut and locking device. Smaller sizes use a nut and lock washer. Large sizes use a nut and a locking clip or locking plate. They also adapt to shaft diameter, so that wider diameter tolerances can be permitted compared to the seat of bearing with a cylindrical bore.