Patent ID: 8419285
Filing Date: 2013-04-16
Classification: F16C

Abstract:
1. A sliding bearing for supporting a crankshaft or a crank pin in an internal combustion engine, comprising: a first semi-cylindrical bearing half and a second semi-cylindrical bearing half to be combined with each other so as to form a cylindrical bearing, the cylindrical bearing being adapted to be incorporated in a split-type bearing housing composed of a first housing half and a second housing half, the first housing half having a higher stiffness than the second housing half, and the first and the second housing halves being adapted to be combined to provide said housing having a housing bore, the housing bore corresponding to the cylindrical bearing wherein the first bearing half is incorporated in the first housing half and the second bearing half is incorporated in the second housing half, wherein at least the first bearing half is provided with a number of circumferential grooves on an inner surface thereof so as to extend circumferentially along the inner surface thereof, and wherein the circumferential grooves at least in one circumferential end region of the inner surface of the first semi-cylindrical bearing half, have a depth of not less than 10 μm, the circumferential end region including a circumferential bearing end face oriented in a direction opposite to a rotation direction of the crankshaft or the crankpin, whereby even if a step portion is generated between abutting end faces of the bearing halves at the circumferential end region, the depth of the grooves at the circumferential end region are greater than or equal to a height of the step portion.