Patent ID: 7611285
Filing Date: 2009-11-03
Classification: F16C

Abstract:
1. A linear ball bearing having a guide carriage ( 2 ) which is guided on a guide rail ( 1 ) in a longitudinally displaceable manner and is mounted in rolling contact on longitudinal sides of the guide rail ( 1 ) via balls ( 3 ) which are arranged on each longitudinal side in at least two parallel ball rows ( 4 , 5 ) encircling in endless ball channels ( 6 ), each ball ( 3 ) of the one ball row ( 5 ) together with an adjacent ball ( 3 ) of the other ball row ( 4 ) being held in cage pockets ( 8 ) of a common cage piece ( 7 ), characterized in that the cage piece ( 7 ) has exactly two cage pockets ( 8 ) for one ball ( 3 ) each from both ball rows ( 4 , 5 ), each cage piece ( 7 ), as viewed in the running direction of the balls ( 3 ), being provided at both ends with convexly curved end surfaces ( 9 ) for contact with the end surfaces ( 9 ) of adjacent cage pieces ( 7 ), which end surfaces ( 9 ) extend essentially up to the cage piece sides ( 10 ).