nut 25 has a conical outer surface a diameter of which increases in a direction of the anti friction bearing at a rapid rotation of the shaft lubricant which finds itself on the surface of the spray nut is fed in the direction of the bearing the lubricant reaches the surface of the spray nut in the embodiment shown in the drawings over nose shaped structures 27 from a lubricant store 26 for large amounts of lubricant the lubricant store can be replaced with a reservoir and a lubricant delivery pump the outer ring 21 of the anti friction bearing is vibrationally retained by an upper axial vibration ring 30 in an axial direction and by a radial vibration ring 31 in a radial direction the bearing region is closed vacuum tight by a cover 9 the anti friction bearing is shown in detail in fig2 the plurality of rolling bodies 23 are arranged between the inner ring 20 which is secured on the shaft 2 with a spray nut 25 and the outer ring 21 the plurality of rolling bodies 23 are distributed over the circumference at a distance from each other by the cage 22 a section of the surface of the cage 22 is located adjacent to the inner ring 20 this section is provided with a threaded groove 28 with the thread circumscribing the inner surface of the cage 22 along its circumference the direction of the helice is so selected that upon rotation of the cage 22 the lubricant is fed in direction shown with arrows the cage 22 has a cone 34 that provides for feeding.