The selection of hydraulic oil generally involves the following steps:
1. Define the acceptable ranges of certain characteristics of the hydraulic oil, such as viscosity, density, vapor pressure, air solubility, bulk modulus, anti-combustibility, temperature limits, pressure limits, lubricity, compatibility, toxicity, etc.
2. Refer to the manual to identify hydraulic oils that meet or largely meet the requirements for the aforementioned characteristics.
3. Conduct a comprehensive assessment and balance the various requirements and parameters.
4. Seek final confirmation from the hydraulic oil manufacturer.
After selecting or configuring hydraulic oil based on specific requirements, it should not be assumed that all issues regarding the working medium of the hydraulic system have been resolved. In fact, improper usage can still alter the properties of the oil. For instance, it is commonly believed that the viscosity of oil at a certain temperature and pressure remains constant regardless of flow conditions. However, excessive shearing of the oil can significantly reduce its viscosity. Therefore, when using hydraulic oil, the following points should be noted to ensure the stability of a four-column hydraulic press:
1. For long-term use, the oxidation and thermal stability of hydraulic oil determine the temperature limits. Therefore, the hydraulic oil should operate at temperatures below the point where oxidation begins.
2. Prevent oil contamination during storage, handling, and refilling processes.
3. Regularly sample and test the oil and establish a routine oil change schedule.
4. Ensure an adequate amount of oil in the reservoir to facilitate heat dissipation in the hydraulic system.
5. Maintain system seals, and promptly address any leaks that occur.
How much hydraulic oil should be added?
For typical hydraulic equipment, around 100 kilograms of hydraulic oil should be added. How should hydraulic oil be changed? Some individuals mistakenly believe that simply emptying the oil from the hydraulic oil tank and refilling it with new oil is sufficient. However, this is incorrect. For example, half of the total oil in a hydraulic machine is stored in the hydraulic pump, hydraulic motor, hydraulic valve, hydraulic cylinder, and various components' pipelines. During an oil change, if only the oil in the tank is replaced without changing all the hydraulic oil throughout the entire hydraulic equipment, this method only mixes old oil with new oil. Therefore, simply changing the oil does not solve any problems. Only by continuously filtering the oil during hydraulic system operation can the cleanliness of the hydraulic oil be fundamentally addressed.
1. Define the acceptable ranges of certain characteristics of the hydraulic oil, such as viscosity, density, vapor pressure, air solubility, bulk modulus, anti-combustibility, temperature limits, pressure limits, lubricity, compatibility, toxicity, etc.
2. Refer to the manual to identify hydraulic oils that meet or largely meet the requirements for the aforementioned characteristics.
3. Conduct a comprehensive assessment and balance the various requirements and parameters.
4. Seek final confirmation from the hydraulic oil manufacturer.
After selecting or configuring hydraulic oil based on specific requirements, it should not be assumed that all issues regarding the working medium of the hydraulic system have been resolved. In fact, improper usage can still alter the properties of the oil. For instance, it is commonly believed that the viscosity of oil at a certain temperature and pressure remains constant regardless of flow conditions. However, excessive shearing of the oil can significantly reduce its viscosity. Therefore, when using hydraulic oil, the following points should be noted to ensure the stability of a four-column hydraulic press:
1. For long-term use, the oxidation and thermal stability of hydraulic oil determine the temperature limits. Therefore, the hydraulic oil should operate at temperatures below the point where oxidation begins.
2. Prevent oil contamination during storage, handling, and refilling processes.
3. Regularly sample and test the oil and establish a routine oil change schedule.
4. Ensure an adequate amount of oil in the reservoir to facilitate heat dissipation in the hydraulic system.
5. Maintain system seals, and promptly address any leaks that occur.
How much hydraulic oil should be added?
For typical hydraulic equipment, around 100 kilograms of hydraulic oil should be added. How should hydraulic oil be changed? Some individuals mistakenly believe that simply emptying the oil from the hydraulic oil tank and refilling it with new oil is sufficient. However, this is incorrect. For example, half of the total oil in a hydraulic machine is stored in the hydraulic pump, hydraulic motor, hydraulic valve, hydraulic cylinder, and various components' pipelines. During an oil change, if only the oil in the tank is replaced without changing all the hydraulic oil throughout the entire hydraulic equipment, this method only mixes old oil with new oil. Therefore, simply changing the oil does not solve any problems. Only by continuously filtering the oil during hydraulic system operation can the cleanliness of the hydraulic oil be fundamentally addressed.
