Title:
IMPROVED JOURNAL BEARING STRUCTURE
Document Type and Number:
Japanese Patent JP2014169792
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable, in a journal bearing, by reducing resistance to a fluid flow through a clearance of a bearing surface, increase of a flow rate of the fluid through the clearance to thereby enhance cooling or increase a bearing life without involving a necessary increase of fluid pressure.SOLUTION: A bushing 44 for use with a journal bearing 40 includes: a cylindrical inner surface defining an inner bearing surface 46; a longitudinal axis 45 and an inner diameter ID; a grooved region of the inner bearing surface 46 having a length H along the longitudinal axis; and a set of grooves 48 in the grooved region of the inner bearing surface 46, where N is the number of grooves in the set of grooves 48. Each groove is disposed offset by a helix angle θ from the longitudinal axis 45 of the bushing 44. The helix angle is approximately equivalent to the following equation: tangent(θ)=(π×ID)/(N×H).
Inventors:
CURTIS DONALD MODTLAND
HUA BAI
HUA BAI
Application Number:
JP2014095948A
Publication Date:
September 18, 2014
Filing Date:
May 07, 2014
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES LLC
International Classes:
F16C33/10; F16C17/02
Attorney, Agent or Firm:
Kobayashi 浩
Norio Omori
Katsuhisa Akutsu
Yasuhito Suzuki
Norio Omori
Katsuhisa Akutsu
Yasuhito Suzuki
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