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1. (WO2018021434) BALL BEARING

Pub. No.:    WO/2018/021434    International Application No.:    PCT/JP2017/027105
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu Jul 27 01:59:59 CEST 2017
IPC: F16C 33/66
F16C 19/16
F16C 33/58
Applicants: NSK LTD.
日本精工株式会社
Inventors: MATSUNAGA Kyohei
松永 恭平
KATSUNO Yoshiaki
勝野 美昭
Title: BALL BEARING
Abstract:
An angular contact ball bearing (10) is configured such that: the outer ring (12) thereof has at least one radial hole (15) extending radially through the outer ring (12) from the outer peripheral surface of the outer ring (12) to the inner peripheral surface thereof; and, if the inferior angle formed relative to the axis (s) of rotation of a ball (13) by the straight line which connects the center (O) of the ball (13) and the point of intersection between the centerline (X) of the radial hole (15) and the surface of the ball (13) is defined as λ, the axial position of the centerline (X) of the radial hole (15) is set to satisfy the relationship of 0° < λ ≤ 60°.