Patent ID: 8388228
Filing Date: 2013-03-05
Classification: F01D,F05D,F16C

Abstract:
1. A sliding bearing used in turbochargers of internal combustion engines, which is formed with a copper alloy comprising, by mass %, 25 to 45% Zn, 0.3 to 2.0% Si, 1.5 to 6.0% Mn, and the balance being Cu and unavoidable impurities, and which has a cylindrical shape for supporting a rotating shaft, wherein crystallized Mn—Si compounds, which extend in an axial direction of the rotating shaft on a sliding surface of the sliding bearing, are dispersed in a matrix of the copper alloy, and wherein the crystallized Mn—Si compounds have an average inter-grain distance of 20 to 80 μm.