Title:
内燃機関のクランク軸用主軸受
Document Type and Number:
Japanese Patent JP6923465
Kind Code:
B2
Abstract:
A main bearing for a journal portion of a crankshaft includes a pair of upper and lower half bearings combined with each other to form a cylindrical shape. Only the upper half bearing includes an oil groove formed on its inner peripheral surface to extend in a circumferential direction, an oil hole piercing from the oil groove to an outer peripheral surface of the upper half bearing, and a plurality of axial grooves formed on its inner peripheral surface to extend in an axial direction so as to intersect with the oil groove. A groove depth D2 of the axial groove is not more than 10% of a groove depth D1 of the oil groove, and an axial length L2 of the axial groove is not less than 70% of an axial length L1 of the upper half bearing.
Inventors:
Amano Seiji
Toru Watanabe
Toru Watanabe
Application Number:
JP2018021568A
Publication Date:
August 18, 2021
Filing Date:
February 09, 2018
Export Citation:
Assignee:
Daido Metal Co., Ltd.
International Classes:
F16C9/02
Domestic Patent References:
| JP2018004013A | ||||
| JP2015113890A | ||||
| JP2000346045A | ||||
| JP2017048849A | ||||
| JP2013536921A |
Attorney, Agent or Firm:
Asamura patent office