Therefore, a double-row bearing with a cylindrical inner sleeve was designed . The axial compensation is accomplished entirely within the bearing itself, by allowing the Inner Ring to slide relative to the outer assembly. The seat in the housing remains unchanged. The bearings can be produced with ceramic balls for high speeds; for longer lifetimes with CRONIDEX -steel inner rings, combined with stabile support of the shaft (two raceways and a one-part Outer Ring resist tilting). A conical bore provides a simple built-in adjustment; simply push onto the shaft until seat is tight, and free to play.