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Tapered roller bearing

  • US 20050213861A1
  • Filed: 02/10/2005
  • Published: 09/29/2005
  • Est. Priority Date: 03/25/2004
  • Status: Active Grant
First Claim
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1. A tapered roller bearing comprising:

  • an outer race;

    an inner race;

    a plurality of tapered rollers interposed between the outer race and the inner race; and

    a cage that retains the tapered rollers;

    wherein the inner race includes a tapered raceway in which the tapered rollers are disposed and a small-diameter end portion and a large-diameter end portion which are formed at opposite ends of the raceway, wherein the small-diameter end portion of the inner race is formed with a small flange portion for limiting axial movement of the tapered rollers and a cylindrical portion which has a less diameter than the small flange portion, wherein the cage includes a small-diameter end portion which is positioned at the small-diameter end portion of the inner race and a large-diameter end portion which is positioned at the large-diameter end portion of the inner race, and wherein the small-diameter end portion of the cage includes a bent portion which is faced to an outer surface of the cylindrical portion of the inner race with a predetermined clearance therefrom such that a labyrinth is formed between the small-diameter end portion and the inner race.

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