CONICAL ROLLER BEARING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a conical roller bearing device that is able to apply a preload with a simple configuration and that is able to ensure bearing stiffness irrespective of a difference in coefficient of thermal expansion.

SOLUTION: A conical roller bearing device includes: a conical roller bearing (20) that includes an inner ring (24) that has an outer raceway surface on its outer peripheral surface, an outer ring (22) that has an inner raceway surface on its inner peripheral surface, and a plurality of conical rollers (28) that are rollably arranged between the outer raceway surface of the inner ring and the inner raceway surface of the outer ring and that are respectively accommodated in pockets formed in a retainer (26); and a pressing means that presses the retainer (26) in a direction to reduce gaps between the conical rollers (28) and the outer raceway surface of the inner ring and gaps between the conical rollers (28) and the inner raceway surface of the outer ring along center axes of the inner ring and outer ring.

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