To solve the problems in a conventional journal bearing that the lead dissolved into oil pollutes a river if oil leakage occurs when the journal bearing is attached to construction machinery and river construction work is performed and the lead pollutes underground water when the journal bearing is disposed by burying it into the ground to dispose the construction machinery because lead is indispensable as solid lubricant and the conventional journal bearing causes a seizure after the operation for many hours.

This lead free journal bearing contains Sn of 7 to 13 mass %, Ag of 0.7 to 2 mass %, and Cu in a remaining part, and molybdenum disulfide of 0.5 mass % or less and graphite of 2 mass % or less are added to this alloy.