Hammer often forget to fill what kind of harm to the hammer?
Due to the internal hammer drive components require lubrication, in order to ensure mutual abrasion as small as possible, the largest extend the service life. Hammer oil, under normal circumstances, need to be replaced once a year. If the lack of oil, will cause damage to internal components, reduce the life, and even lead to scrap hammer.
You often forget to hammer hammer life greatly reduced.
