| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing metal capable of securing a sliding area and effectively avoiding lubrication failure and fretting. <P>SOLUTION: The bearing metal 21 includes: a bearing face 26 located along a center in the width direction of an inner peripheral face 25 of the bearing metal 21 fitted to a bearing fitting face 6 of a connecting rod large end portion 5; and inclined step faces 27, 28 located between both side edges 26a, 26b and side ends 23a, 23b of the bearing face 26. A positioning pawl 29 projecting from the inner peripheral side to the outer peripheral side is cut and erected on the one step face 28. The bearing face 26 is formed without being effected by the positioning pawl 29 and an oil film of lubricating oil and a sliding area can be secured between the bearing face 26 and a crank pin p, so as to achieve good lubrication. Adhesion between an outer peripheral face 24 of the bearing metal 21 and the bearing fitting face 6 is improved and fretting can be suppressed, so as to maintain the bearing quality. <P>COPYRIGHT: (C)2013,JPO&INPIT |
