Method for filling a ball roller bearing with roll bodies as well as a ball roller bearing filled according to the method

Abstract

A method for filling a ball roller bearing with roll bodies, and a ball roller bearing, which is filled according to the method and has an outer and an inner bearing ring and a plurality of ball rollers, which are arranged between these bearing rings and have two side surfaces, which are flattened symmetrically from a basic spherical shape, parallel to one another and held at uniform distances from one another by a bearing cage. The ball rollers roll in groove-shaped raceways, recessed in the inner face of the outer bearing ring and the outer face of the inner bearing ring. The ball roller bearing is filled by an eccentric axial, tilting fitting of the ball rollers through the interval between the bearing rings in the form, that the filled ball roller bearing is filled to the extent of about 94% and has a service life of up to 253%.

1 . A ball roller bearing having
 two bearing rings, the bearing rings being an outer bearing ring and an inner bearing ring; and   a plurality of ball rollers, which are arranged between the bearing rings and which each have two lateral faces, symmetrically flattened from a basic spherical shape and arranged parallel to one another, and which are held at uniform distances from one another in a circumferential direction by a bearing cage, the ball rollers, between the lateral faces, having a width of approximately 70% of a diameter of a basic spherical shape and bearing surfaces rolling in two groove-shaped raceways recessed into an inside of the outer bearing ring and into an outside of the inner bearing ring, a depth of which is designed to be approximately 20% of the diameter of the basic spherical shape of the ball rollers, while a distance between the inside of the outer bearing ring and the outside of the inner bearing ring amounts to just approximately 60% of the diameter of the basic spherical shape of the ball rollers,   wherein an axial-tilt eccentric assembly of the ball rollers through the distance between the bearing rings, in which the inner bearing ring of the two bearing rings, arranged in a horizontal concentric position relative to one another, is arranged so that firstly it is slightly moveable radially along a bearing longitudinal central axis and secondly it is on an axially offset higher plane than the outer bearing ring in order to create the distance between the bearing rings that is greater than a width of the ball rollers, wherein the ball rollers are arranged contiguously with one another, and the distance between a first ball roller and a last ball roller is about equal to the diameter of a basic spherical shape of a ball roller.   
     
     
         2 . The ball roller bearing according to  claim 1 , wherein the ball roller bearing, starting from a filling density of about 60% for a deep-groove ball bearing of equivalent construction, has a filling density of up to about 94% and a service life of the ball roller bearing, starting from a service life of 100% for a deep-groove ball bearing of equivalent construction, is up to about 253%. 
     
     
         3 . The ball roller bearing according to  claim 1 , wherein the bearing is filled by
 radially displacing of the inner bearing ring into an eccentric limit position and feeding of the ball rollers with the lateral faces oriented towards the bearing rings to a site of a maximum distance between the bearing rings on the bearing longitudinal central axis intended as an insertion point;   successively introducing of the ball rollers, in a position slightly tilted towards the outer bearing ring, into the insertion point between the bearing rings until a free filling space remaining between the bearing rings is just approximately equal to the diameter of the basic spherical shape of an individual ball roller;   axially lowering the inner bearing ring and simultaneous axially raising the outer bearing ring into a position in which the bearing rings are located in a common plane and the ball rollers tilted into the raceways of the bearing rings are held between the raceways;   rotationally accelerating the outer bearing ring to a speed at which the ball rollers spontaneously right themselves under rotation due to centrifugal force and assume a uniformly inclined position inside the raceways of the bearing rings;   arresting the outer bearing ring and simultaneously axially lowering the inner bearing ring and of the outer bearing ring until the ball rollers are located in a horizontally level position in the raceways of the bearing rings;   uniformly distributing of the inserted ball rollers on a pitch circle of the ball roller bearing and inserting the bearing cage through the distance between the bearing rings with final greasing and optional sealing of the ball roller bearing.