Aluminium-based bearing alloy

摘要

The present invention has been made by the fact that the wettability with lubricant increases when tin grains (2) are broken within a certain range. In an aluminum-based bearing alloy containing from 2 to 20 mass% of tin, the tin grains (2) in a sliding surface have a size not less than 20 µm 2 but not more than 50 µm 2 expressed in region partitioned areas of the tin grains measured in accordance with a region partitioning method.