Patent ID: 7220057
Filing Date: 2007-05-22
Classification: F04B,F16C

Abstract:
1. Rotary plain bearing for a drive shaft of a piston machine, and an axial-piston machine, which has an inner first bearing element having a circumferential surface and an outer second bearing element having an inner circumferential surface, the outer bearing element surrounding the inner bearing element, which is constructed as a bearing sleeve and which is secured and fastened against relative rotation on a drive shaft of said piston machine, wherein at least one first lubricating groove which extends through continuously and approximately axially is provided in the circumferential surface of the inner first bearing element and/or in the inner circumferential surface of the outer second bearing element, wherein one of the two bearing elements has associated with it, on one or both sides, a support shoulder having a slide face against which the bearing element is supported axially by its side face adjacent the support shoulder, wherein at least one approximately radially extending second lubricating groove is arranged in the slide face or in the side face supported thereagainst, wherein the lubricating grooves ( 46 a , 46 b , 38 ) are connected to one another in the region where they are mutually adjacent, and wherein the one or one of the two support shoulders is connected in one piece to selectively the second or the first bearing element.