Title:
MAIN SHAFT DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/129825
Kind Code:
A1
Abstract:
A cooling passage (40) through which a cooling medium can flow is formed between the inner peripheral surface of a rear housing (33), and the outer peripheral surface of a bearing sleeve (16) having a free-side bearing inserted therein. The cooling passage (40) is formed in the outer peripheral surface of the bearing sleeve (16), and is provided with: a first annular groove (41A) provided to one-end side of the sleeve in the axial direction; a second annular groove (41B) provided to another-end side of the sleeve in the axial direction; and a single helical groove (47) which has one end thereof connected to the first annular groove, and another end thereof connected to the second annular groove. The cooling medium is supplied to the first annular groove, flows through the cooling passage, and is discharged from the second annular groove.
Inventors:
OGURI SHOICHIRO (JP)
KATSUNO YOSHIAKI (JP)
KATSUNO YOSHIAKI (JP)
Application Number:
PCT/JP2015/055698
Publication Date:
September 03, 2015
Filing Date:
February 26, 2015
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B23B19/02; B23Q11/12; F16C19/54; F16C35/12; F16C37/00; H02K5/16
Foreign References:
| JPH10225802A | 1998-08-25 | |||
| JP2004249439A | 2004-09-09 | |||
| JP2010221360A | 2010-10-07 | |||
| JP2000317754A | 2000-11-21 |
Other References:
See also references of EP 3112061A4
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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