| 摘要 |
PURPOSE: A sleeve for rolling mill oil film bearing is provided to increase the load bearing capacity of relatively large oil film bearings having internally tapered non-locking sleeves by at least 10%, and preferably by as much as 20% or more through appropriate reductions in the minimum sleeve thicknesses 't'. CONSTITUTION: The sleeve (10) for use in an oil film bearing (12) of the type employed to rotatably support a roll neck in a rolling mill is characterized in that the sleeve (10) has an internally tapered section, an end section aligned axially with the internally tapered section, and a cylindrical outer surface surrounding the internally tapered section, the cylindrical outer surface is adapted to be rotated in a bushing component of the bearing and has a diameter D of at least 500 mm, the internally tapered section is adapted to be seated on an externally tapered section (16) of the roll neck and has a taper angle greater than three degrees and a minimum thickness of between about 10 mm and 0.024D+14.5, and mechanically engageable means is located outside of the internally tapered section and exclusively in the end section for rotatably fixing the sleeve to the roll neck, wherein the minimum thickness t is preferably at least 19 mm, and the minimum thickness t is preferably not greater than 0.024D+7.4. |
