JP2009287593A5 - - Google Patents

Claims (4)

An outer ring formed on the inner peripheral surface in such a manner that the outer conical raceway surface that becomes the raceway of the tapered roller that forms the rolling element expands from the second side in the axial direction toward the first side;
An inner ring that is arranged concentrically with the outer ring and is rotatable relative to the outer ring around an axis by the plurality of tapered rollers interposed between the outer ring and a raceway of the tapered roller The inner conical raceway surface is formed on the outer peripheral surface so as to increase in diameter from the second side in the axial direction toward the first side, and is formed radially adjacent to the first side of the inner conical raceway surface. An inner ring having a large collar portion that protrudes in the direction and regulates the axial position of the large-diameter end surface of the tapered roller on the inner conical raceway surface;
A plurality of pocket portions, which are disposed in the rolling element holding space between the outer ring and the inner ring and accommodate and hold the plurality of tapered rollers in a rollable manner, are formed at predetermined intervals in the circumferential direction. And an oil outflow restricting portion for restricting the flow of lubricating oil generated from the second side end portion of the rolling element holding space toward the first side end portion with the rolling of the tapered roller, A cage formed on the first side end ,
The oil spill restricting portion restricts the flow of the lubricating oil generated along with the rolling of the tapered roller on the inner side in the radial direction of the retainer, and in the radial direction at the first side end portion of the retainer. A tapered roller bearing characterized by being formed to protrude inward . The oil outflow restricting portion, the cage circumferential direction formed by intermittently protrude claim 1 tapered roller bearing according. The tapered roller bearing according to claim 1 or 2, wherein the oil spill restricting portion is formed to protrude in a section corresponding to at least the pocket portion of the cage. The pocket portion defines a first axial restriction portion and a second axial restriction portion for restricting positions of the first and second sides in the axial direction of the tapered roller, and each of the pocket portions is circumferentially divided and the cone. A plurality of circumferential direction regulating portions that regulate the circumferential position of the roller are formed, and the circumferential direction regulating portion is formed by connecting the first axial regulating portion and the second axial regulating portion in the axial direction. Has been
The oil outflow restricting portion, in the circumferential direction of the first axial regulating portion, said circumferential not formed on the corresponding section in the direction regulating portion, according to claim 3 which is formed in the section corresponding to the pocket portion Tapered roller bearing.