No matter what type of mechanical equipment is concerned, the function of lubricating oil is very important. The function of lubricating oil is very simple, mainly in order to reduce the friction coefficient of machinery, so that it can play a lubricating role. The automatic powder molding press machine manufacturers, before use should be full cup, oil hole and the friction surface with lubricating oil, and the friction surface with various running empty oil film, so as to prolong the service life of a machine. In fact, the lubricating oil can be said to be part of the maintenance. In the ordinary maintenance, the staff should check whether the lubricating oil of the machine is enough.