| 摘要 |
<p>The invention relates to a four-row taper roller bearing, in particular for use on the work rolls of roll stands. The bearing comprises an inner ring, having a plurality of axially aligned portions 1,2, an outer ring 3-6 and taper rollers 8-11 disposed between the bearing rings. The joint between the mutually facing and abutting end faces 17,18 of the inner ring portions 1,2 is sealed by a sealing ring 20 having a bore, in which bore are provided annular ribs 24 which seat on peripheral surfaces 21 of each of the inner rings. The ribs and the regions of the inner ring peripheral surfaces situated between the ribs define a chamber 25 bridging the joint. At least one of the mutually facing and abutting end faces of the inner rings is provided with substantially radially extending grooves 19, recesses or the like. The chamber 25 and/or the grooves 19 may be supplied with lubricant or with heat conductive inserts. Sealing ring 20 may have a pressure relief valve to relieve excess pressure in bearing cavity 28.</p> |
