Title:
BEARING DEVICE AND SPINDLE DEVICE WITH BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/080215
Kind Code:
A1
Abstract:
This bearing device comprises a first bearing (5a), a spacer (6), and a second bearing (5b) aligned along an axial direction on an outer circumference of a main shaft (4). Each of the first bearing (5a) and the second bearing (5b) comprises an inner ring (5ia, 5ib), an outer ring (5ga, 5gb), and a plurality of rolling elements (Ta, Tb). The spacer (6) comprises an inner ring spacer (6i) between two inner rings (5ia, 5ib), and an outer ring spacer (6g) between two outer rings (5ga, 5gb). Of the inner ring spacer (6i) and the outer ring spacer (6g), the fixed-side spacer is divided into a first member (A) and a second member (B), and a circuit board (33) is disposed in a space therebetween.
Inventors:
SHIBUYA YUSUKE (JP)
KOIKE TAKASHI (JP)
FUKUSHIMA YASUYUKI (JP)
KOIKE TAKASHI (JP)
FUKUSHIMA YASUYUKI (JP)
Application Number:
PCT/JP2023/036342
Publication Date:
April 18, 2024
Filing Date:
October 05, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/54; B23B19/02; F16C19/16; F16C33/66; F16C35/12; F16C41/00; F16N7/32
Foreign References:
| JP2020037963A | 2020-03-12 | |||
| JPH1162952A | 1999-03-05 | |||
| JP2013083335A | 2013-05-09 | |||
| JP2007057257A | 2007-03-08 | |||
| JP2014062617A | 2014-04-10 | |||
| JP2019168081A | 2019-10-03 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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