What is the reason for oil leakage during CNC machining?

Friends who have touched ultra precision machining centers should know that oil leakage is very easy to occur during the entire CNC machining process. In fact, it is very easy to see the parts where CNC machining management centers leak oil. Mainly caused by oil leakage from spare parts or machining center cylinders. If it is a spare part, maintenance and upkeep are relatively simple. If it is a cylinder, it will be very inconvenient and may cause equipment damage. ​ Oil change that does not comply with regulations can often cause oil leakage during CNC machining. The specific problems that occur during oil change are manifested in three aspects. 1、 For components with low viscosity lubricating grease, randomly changing to high viscosity lubricating grease during oil change may cause certain damage to the sealing characteristics of the corresponding housing, hole shaft, etc., and may also significantly reduce the sealing of these parts. 2、 When changing the oil of precision CNC lathe machined parts, if the car oil tank is not cleaned, the waste in the car oil tank is likely to enter the lubrication system, block the oil passage, damage the hydraulic seal, and cause oil leakage. 3、 When changing oil during CNC machining, there is too much oil, especially in areas with rotating parts. Due to the stirring effect of rotating parts, oil leakage is more likely to occur. Improper use and adjustment of lubrication system components can cause oil leakage in CNC machining, such as when CNC machining maintenance personnel use gasoline pumps with high working pressure or excessive oil leakage during maintenance, or when adjusting the working pressure of system software, the working pressure of speed control valves, valves, pressure regulating valves, etc. is adjusted too high, and the total flow rate of the CNC lathe lubrication system is too large, which does not match the pump oil system software and its sealing system software, leading to oil leakage. In fact, the reasons for oil leakage during CNC machining are not just the above aspects. If we encounter similar problems during the operation of lathe CNC machining, we must carefully inspect and immediately identify the cause of CNC machining oil leakage to prevent unnecessary damage.