Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
August 3, 2021
Patent Application Number
20170323
Date Filed
March 23, 2017
Patent abstract
Provided is a tapered roller bearing (1, 1′, 21) which is to be used for a pilot portion and an idler portion of a synchronous mesh-type transmission in which a component corresponding to a bearing outer ring (3, 23) is formed of a gear (34, 43), wherein a ratio L/Dw of a roller length (L) of a tapered roller (4) serving as a rolling element to a roller diameter (Dw) is set to 1.7 or more, wherein a rolling surface (6) of the tapered roller (4) includes a straight portion (6a) in a center portion of the rolling surface (6) in an axial direction and crowning portions (6b, 6c) extending from the straight portion (6a) to both end portions, and wherein the crowning portions (6b, 6c) are each formed of logarithmic crowning.
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