Title:
PRELOAD INSPECTION METHOD FOR WHEEL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/059865
Kind Code:
A1
Abstract:
Provided is a preload inspection method with which a preload value can be calculated more accurately. Furthermore, provided is a preload inspection method with which a pass/fail with regard to a preload state can be determined more accurately. The preload inspection method for a wheel bearing device (1) provided with an outer member (2) having an outside raceway surface (2c/2d), an inner member (3) having an inside raceway surface (3c/3d), and rolling bodies (4/5), is provided with: a power calculation step (S5) in which the outer member (2) or the inner member (3) is rotated in a relative manner and the power (P) is calculated; a preload value calculation step (S6) in which a preload value (F2) is calculated on the basis of the power (P) calculated in the power calculation step (S5); and a pass/fail determination step (S7) in which a pass/fail determination is made on the basis of whether the preload value (F2) calculated in the preload value calculation step (S6) is within a permissible range (R).
Inventors:
TAKUBO TAKAYASU (JP)
OBATA TAKUYA (JP)
OWADA TAKAYUKI (JP)
OBATA TAKUYA (JP)
OWADA TAKAYUKI (JP)
Application Number:
PCT/JP2020/032681
Publication Date:
April 01, 2021
Filing Date:
August 28, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/18; G01L5/00; G01M13/04
Foreign References:
| JPH1144319A | 1999-02-16 | |||
| US20040177509A1 | 2004-09-16 | |||
| US6343420B1 | 2002-02-05 | |||
| US4165636A | 1979-08-28 | |||
| JPH10185717A | 1998-07-14 | |||
| JPH10185717A | 1998-07-14 |
Other References:
See also references of EP 4043744A4
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
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