Patent ID: 9422983
Filing Date: 2016-08-23
CPC Classification: F16C

Claim Text:
1. A rolling bearing of the roller type, comprising: a radially outer ring, a radially inner ring, and a plurality of revolving bodies defined by rollers disposed between the radially outer ring and the radially inner ring and grouped into at least one crown of revolving bodies, the rollers engaging a radially outer lateral surface of the inner ring and a radially inner lateral surface of the outer ring facing each other and being laterally held, in a direction parallel to a relative rotation axis (A) between the inner ring and the outer ring, by respective axial shoulders supported by the inner ring or the outer ring or by both the inner ring and the outer ring; and wherein i) the axial shoulders each consist of an annular element made of synthetic plastic material as an independent element from the outer ring and from the inner ring that engages in a snapping manner the inner ring to be axially integral with the inner ring or the outer ring to be axially integral with the outer ring or both the inner ring and the outer ring to be axially integral with the inner ring and the outer ring; ii) the inner ring and the outer ring are each provided at the respective radially outer and inner lateral surfaces and at least at one of each respective opposite axial ends thereof, with respective locking seats each adapted to receive in a snapping manner a respective annular element made of synthetic plastic material and each having at least one continuous annular groove disposed on one of the outer ring and the inner ring and facing the other ring; iii) each annular element made of synthetic plastic material realizing an axial shoulder is integrally formed in one piece by first and second circumferential sectors arranged in reciprocally alternating manner; the first circumferential sectors being solid radial sectors, stiffer than the second sectors, and the second circumferential sectors being each provided with a circumferential indentation having depth directed in axial direction and made on an axially outer front surface of the annular element, facing the opposite side of the rollers, wherein the indentation is U-shaped on the axially outer front surface of the annular element, and detaches from the annular element a circumferential wing, elastically deformable in radial direction; iv) the circumferential wing being provided with a radial tooth, which couples within the continuous annular groove of one locking seat, having a circumferential and axial profile which mimics that of the continuous annular groove.