Abstract: A centering device for mounting a flange with a bolt passing through a opening in a mounted state, has a centering disk with a collar surrounding a disk part. The disk part is received in the opening and the collar rests on the flange. An elongated hole in the disk part has, at its respective ends, semicircles of radii R and a straight piece connecting the semicircles of overall length L1. A centering sleeve has a sleeve part surrounded by a sleeve collar wherein the inside diameter D3 of the sleeve part corresponds to the diameter of the bolt and the outside diameter D2 of the sleeve part corresponds to the transverse diameter (2R) of the elongated hole. A locking device fixes the centering sleeve against the centering disk in a predetermined mounting position secure against displacement.

Abstract: A centering device for mounting a flange with a bolt passing through a opening in a mounted state, has a centering disk with a collar surrounding a disk part. The disk part is received in the opening and the collar rests on the flange. An elongated hole in the disk part has, at its respective ends, semicircles of radii R and a straight piece connecting the semicircles of overall length L1. A centering sleeve has a sleeve part surrounded by a sleeve collar wherein the inside diameter D3 of the sleeve part corresponds to the diameter of the bolt and the outside diameter D2 of the sleeve part corresponds to the transverse diameter (2R) of the elongated hole. A locking device fixes the centering sleeve against the centering disk in a predetermined mounting position secure against displacement.