Title:
BEARING SLEEVE, DYNAMIC PRESSURE BEARING DEVICE AND MOTOR
Document Type and Number:
Japanese Patent JP2020159457
Kind Code:
A
Abstract:
To provide a bearing sleeve that can increase load capacity in a radial direction while maintaining rotational accuracy and quietness of a dynamic pressure bearing and can be used in a low-speed rotation region, and to provide a dynamic pressure bearing device and a motor.SOLUTION: In a bearing sleeve, a radial bearing clearance of a perfect circle bearing part and a radial bearing clearance of a dynamic pressure bearing part are formed between an inner peripheral surface of the bearing sleeve and an outer peripheral surface of a shaft member opposite to the inner peripheral surface with the rotation of the shaft member.SELECTED DRAWING: Figure 1
Inventors:
YAMASATO MASASHI
HARADA KAZUNORI
ITO FUYUKI
HARADA KAZUNORI
ITO FUYUKI
Application Number:
JP2019059063A
Publication Date:
October 01, 2020
Filing Date:
March 26, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
H02K7/08; F16C17/02
Domestic Patent References:
| JP2001124057A | 2001-05-08 | |||
| JP2002181033A | 2002-06-26 | |||
| JPH1068418A | 1998-03-10 | |||
| JP2000320539A | 2000-11-24 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano