UNIT FOR AXIAL FIXATION OF BEARING IN JOURNAL OF ROLLING ROLL Russian patent published in 2005 - IPC

FIELD: axial fixation of bearing assemblies and chocks in journals of rolling rolls of wide strip rolling mills.

SUBSTANCE: unit includes spacing sleeve mounted on journal of roll. Said sleeve is hold against cranking by means of key arranged in key groove of journal. Ring halves are mounted in annular groove of roll journal and are embraced along their outer cone surfaces by means of spacing nut screwed on thread of end outer portion of spacing sleeve. Unit also includes member for holding nut against cranking on spacing sleeve. Key is arranged between spacing sleeve and roll journal freely in key grooves provided on inner surface of sleeve and journal. Said member for holding spacing nut against cranking on spacing sleeve is in the form of flat ring secured to outer end of nut by means of bolts. There is protrusion on inner surface of ring; said protrusion is arranged in key groove of roll journal. Number of openings for bolts in ring is less than number of threaded openings in end of spacing nut. Diameter of openings of ring is more than that of bolts. Number of openings of ring and of spacing nut corresponds to condition providing possibility for securing nut in any position to ring at least by means of two bolts arranged in diametrically opposite openings.

EFFECT: lowered number of emergency idling periods, reduced consumption of rolls and bearings, shortened time period for changing rolls, enhanced reliability of fixation of bearings, improved rolling efficiency, high quality of rolled strips.

3 dwg, 1 ex