Thrust bearing
AssigneeNtn Corporation
InventorsNorio Fujioka, Kazuyuki Yamamoto
Life of this patent
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Abstract
An integral type thrust bearing is proposed which can be manufactured with fewer heat treatment steps. The retainer and the inner and outer rollers not hardened are assembled together with rollers into a bearing and thereafter the assembled bearing is carburized, hardened and tempered. This eliminates the need of individual heat treatment of the retainer and the inner and outer rings and decreases heat treatment steps for the production of thrust bearings.
Claims5
A thrust bearing comprising a retainer formed with pockets for radially housing a plurality of rollers, and at least one of an inner ring having a flange on its inner-diameter side and an outer ring having a flange on its outer-diameter side, said flange restricting a radial gap in the thrust bearing, so that said bearing ring and said retainer are made inseparable from each other, characterized in that after said bearing ring and said retainer have been assembled together with said rollers into a bearing with said bearing ring and said retainer not hardened, the thus assembled bearing is subjected to carburizing, hardening and tempering.
Dependencies are inferred from the claim text.