US 2016/0108959 A1Published application

Tapered roller bearing

AssigneeNtn Corporation

InventorsTakashi YAGI, Hiroyuki MIYAZAKI

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Abstract

A tapered roller bearing is provided including an inner race not formed with a large flange so as to allow an increase in the load carrying capacity. The tapered roller bearing includes a retainer having a larger diameter ring portion configured such that, of the forces acting from an inner race and an outer race of the tapered roller bearing onto the tapered rollers, the components directed from the smaller diameter side to the larger diameter side of tapered rollers are received by the larger diameter ring portion, and the movement of the tapered rollers toward the larger diameter side of the inner race can be restricted due to the rigidity of the larger diameter ring portion of the retainer. This eliminates the need to provide a large flange on the inner race of the tapered roller bearing, so that the length of the tapered rollers can be elongated.

Claims4

Dependent claims

A tapered roller bearing comprising:

an inner race provided with a tapered raceway on an outer peripheral surface thereof;
an outer race provided with a tapered raceway on an inner peripheral surface thereof;
a plurality of tapered rollers received between the raceway of the inner race and the raceway of the outer race;
and
a retainer rollably retaining the tapered rollers;
wherein the retainer comprises a larger diameter ring portion and a smaller diameter ring portion that are connected together through a plurality of column portions, with each of the tapered rollers mounted between an adjacent pair of the column portions;
and
wherein the larger diameter ring portion of the retainer is configured such that, of forces acting from the inner race and the outer race onto the tapered rollers, components directed from smaller diameter toward larger diameter sides of the tapered rollers are received by the large diameter ring portion.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/891,685Filed 20 May 2014
Priority: JP 2013-10885423 May 2013
Published: 21 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16C 33/4682
Details of individual pockets, e.g. shape or roller retaining means: of the end walls, e.g. interaction with the end faces of the rollers
F16C 19/364
With a single row of rollers: with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
F16C 33/4623
Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages: formed as one-piece cages, i.e. monoblock cages
F16C 33/583
Raceways; Race rings: details of specific parts of races