"AC Fan" During the inspection we find that some problems exist in the bearing housing, the bearing housing is used in order to better protect the fans, but careful examination, we found that the bearing housing oil leakage problem can also occur sometimes, but factors causing the bearing housing oil leakage more, we need to gradually be analyzed, such as pipeline route Mifengbuyan interface box bearing lubrication oil supply if the amount is too high, seal fan of these reasons can lead to damage of the fan bearing box appears phenomenon of oil spills, oil leakage caused by different reasons are different, but also due to the different types of fans, plus the difference in usage, the specific cause of the oil leak problems are different, so we face bearing tank leakage problem, we also need specific conditions.