Hydraulic presses rely on hydraulic oil to transmit kinetic energy. The correct choice of hydraulic oil is directly related to the performance of the hydraulic press.

There are many brands of hydraulic oil. Great Wall brand and Kunlun brand are both good choices. Of course, you must buy genuine brand hydraulic oil. Never buy cheap regenerated oil, which will affect the performance and use of the hydraulic machine.

To choose hydraulic oil, choose different types of hydraulic oil according to the system pressure of the hydraulic machine, the working environment and temperature of the hydraulic machine.

Hydraulic oils are classified into general hydraulic oils, anti-wear hydraulic oils, rail hydraulic oils, low temperature hydraulic oils, etc. according to the different additive components added in the base oil. If the system pressure in the hydraulic press is less than 7Mpa, generally use HL type general hydraulic oil. If the hydraulic press uses a plunger pump or vane pump as the power source, the system pressure is medium, high pressure, and heavy load. The hydraulic oil should be HM type anti-wear hydraulic oil, so as to ensure the normal operation of the fine parts in the nutrition system. If the ambient temperature is below zero, the HS type low temperature hydraulic oil should be used. HV type low temperature hydraulic oil is used in lower environment than HS type low temperature hydraulic oil.

Even if it is the same type of hydraulic oil, the steel-wood door embossing machine should use hydraulic oils of different viscosity under different ambient temperatures. Dynamic viscosity is an index reflecting the fluidity of hydraulic oil. Dynamic viscosity: It is the force required to generate a unit flow rate by using a unit area of ​​liquid layer per unit distance. Unit: pa.s (Pa per second). Kinematic viscosity: the ratio of dynamic viscosity to density. The customary unit is centist. The smaller the dynamic viscosity, the better the low temperature fluidity. The three anti-wear hydraulic oils L-HM32, L-HM46, and L-HM68 are the more commonly used models.

The suitable working temperature of the hydraulic oil is 20°C-60°C. The hydraulic machine equipment produced by Tengzhou Intermodal is equipped with a water-cooled cooler device in the oil tank. When the hydraulic machine is working, the cooling device is automatically turned on by the temperature measuring device to achieve automatic control of the oil temperature. Function. Therefore, intermodal hydraulic presses generally use L-HM46 anti-wear hydraulic oil as the four-season hydraulic oil.

It is inevitable that there are solid particles in hydraulic oil. Our country stipulates that the cleanliness of hydraulic oil in medium and high pressure hydraulic systems should not be less than NAS 9.