MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202617060642 A) filed by Primetals Technologies Usa LLC on May 13, 2026, for Sleeve As Part Of An Oil Film Bearing For A Rolling-Mill Roll, Oil Film Bearing, And Rolling Stand.
Inventors include Wojtkowski, Thomas; and Osgood, Peter.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: The invention relates to a sleeve as part of an oil film bearing for a rolling-mill roll, to an oil film bearing having a sleeve of this type, and to a rolling stand having an oil film bearing of this type. The sleeve (10) is intended to receive a roll journal (16) of the rolling-mill roll and is designed to be rotatably mounted in a bearing bush (18). The bearing bush (18) is disposed in a bearing housing (20) of a rolling stand, and an outer side (23) of the sleeve is cylindrical at least in parts, with an outside diameter D and a length L of the cylindrical portion, and an inner side of the sleeve is conical at least in parts, with a minimum inside diameter d of the conical portion (21). The following applies to the minimum inside diameter d: D · (c · ln (D) + bmin) = d = D · (c · ln (D) + bmax), where D is the outside diameter in units of millimeters, and where c and bmin and bmax are defined as follows: for L:D = 0.78 : c=0.0305, bmin=0.5578, bmax=0.687; for 0.78 L:D 0.88 : c=0.0302, bmin=0.544, bmax=0.6706; for L:D = 0.88 : c=0.0301, bmin=0.5278, bmax=0.655.
Disclaimer: Curated by HT Syndication.
