Title:
ボールねじの軸受装置
Document Type and Number:
Japanese Patent JP5737404
Kind Code:
B2
Abstract:
Provided is a cooling mechanism capable of efficiently cooling a ball screw bearing device or the vicinity of the bearing device. For that reason, a ball screw bearing device (101) includes an inner ring (121) that fits to an end portion of a screw shaft (110) of a ball screw and rotates integrally with the screw shaft (110); an outer ring (123) that rotatably supports the inner ring (121) via a plurality of rolling elements (122) arranged on an outer peripheral surface (121a) of the inner ring (121); and a housing (130) that has an inner peripheral surface (130a) that abuts against the outer peripheral surface (123a) of the outer ring (123) and rotatably supports the screw shaft (110). A plurality of through-holes for cooling (170) that passes through both ends (130b, 130b) of the housing (130) and causes a cooling medium to pass therethrough are formed in an axial direction of the housing (130).
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| JP3210658 | [Title of Invention] Ball screw device |
Inventors:
Yutaka Nagai
Application Number:
JP2013525576A
Publication Date:
June 17, 2015
Filing Date:
July 20, 2012
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16H25/24
Domestic Patent References:
| JP2010105131A | ||||
| JP2003056584A | ||||
| JP2011017419A | ||||
| JP54026611U | ||||
| JP60012720U | ||||
| JP61007624U |
Attorney, Agent or Firm:
Tetsuya Mori
Hide Tanaka Tetsu
Ichi Hirose
Toru Miyasaka
Hide Tanaka Tetsu
Ichi Hirose
Toru Miyasaka