| 摘要 |
Provided are a retainer for a tapered roller bearing, which can be adapted for various designs without imposing limitations on a design for dimensions of hook portions, a method of manufacturing this retainer, and a tapered roller bearing using this retainer. The retainer for a tapered roller comprises: a radially-smaller-side ring portion (24b); a radially-larger-side ring portion (24a); and a plurality of brace portions (24c) arranged between the radially-smaller-side ring portion and the radially-larger-side ring portion. The retainer is made of a resin and retains tapered rollers (23) in pockets (24d) formed between the brace portions (24c). A hook portion (36) is formed on a radially larger side, and is engaged with a radially larger side of an inner race (21). An outer diameter of each of the pockets (24d) on the radially-smaller-side ring portion side thereof (end diameter of the pocket (24d) on the radially smaller side thereof) is set to be larger than an inner diameter of the hook portion (36). The pockets (24d) are formed using a slide core (53) which slides toward an axial center of the retainer so as to be inclined with respect to the axial center of the retainer when the retainer is drawn.
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