The utility model relates to a special oil basin which can solve the problem of cleaning a bearing and a bearing seat. The special oil basin is composed of a wall board (2), a trapezium oil sink (3), a bracket (4), etc. The utility model overcomes the defects that the existing bearing is unsafe to clean and inconvenient to operate. The special oil basin can solve a series of problems that a bearing and a bearing seat can not be cleaned cleanly, the cleaning process pollutes environment, the consumption of cleaning agents (coal oil) is much, etc. The utility model has the advantages of convenient operation, high safety and reliability and high cleaning speed.