1. It is recommended to use No. 32 and No. 46 anti-wear hydraulic oil for working oil, and the oil temperature should be within the range of 15 to 60 degrees Celsius.

2. The oil is only allowed to be added to the tank after strict filtration.

3. The working oil should be replaced once a year, and one replacement time should not exceed three months.

4. The slider should always be filled with lubricating oil, the exposed surface of the column should be kept clean frequently, and oil should be sprayed before each work.

5. Under the nominal pressure of 500T, the concentrated load allows eccentricity of 40mm. If the eccentricity is too large, it is easy to strain the column or cause other undesirable phenomena.

6. Check the pressure gauge every six months.

7. If the machine is out of use for a long time, the surface of each part should be cleaned and coated with anti-rust oil.