MULTI-RING ECCENTRIC ROLLING BEARING, IN PARTICULAR FOR THE ROLLING SUPPORT OF THE MAIN CYLINDER IN PRINTING PRESSES

摘要

The invention relates to a multi-ring eccentric rolling bearing (1), substantially consisting of a centric main bearing (2) and at least one pivot bearing (3) arranged concentrically with said main bearing (2), the latter (2) being formed by a centric inner ring (4) and an eccentric outer ring (5), between which a plurality of rolling bodies (10, 11) arranged in several adjacent rows (6, 7, 8, 9) roll on several races (14, 15, 16, 17) situated on the outer face (12) of the inner ring (4) and the inner face (13) of the central ring (5). The pivot bearing or bearings (3) is or are formed by the eccentric central ring (5) of the main bearing (2) and an additional centric or eccentric bearing ring (18), between which a plurality of rolling bodies (23, 24) arranged likewise in several adjacent rows (19, 20, 21, 22) roll on several races (27, 28, 29, 30) situated on the outer face (25) of the central ring (5) and the inner face (26) of the additional bearing ring (18). According to the invention, at least the rotating main bearing (2) of the multi-ring eccentric rolling bearing (1), said main bearing being designed as a floating bearing or a fixed bearing, is formed by a multi-row spherical rolling bearing, each ball-type rolling body (10, 11) of which has symmetrical end faces that are flattened off axially in relation to the basic ball design and that lie parallel to one another.