Question One: What is the essential difference between hydraulic oil and lubricating oil?
Definition of Hydraulic Oil:
Hydraulic oil refers to the hydraulic medium used in hydraulic systems that harness the energy of liquids under pressure. It serves functions such as energy transmission, system lubrication, corrosion protection, rust prevention, and cooling within the hydraulic system. For hydraulic oil, it must first meet the viscosity requirements of the hydraulic device at working and startup temperatures. Since changes in oil viscosity directly affect hydraulic actions, transmission efficiency, and precision, the oil's viscosity-temperature performance and shear stability must meet various demands for different applications.
Definition of Lubricating Oil:
Lubricating oil is a liquid lubricant used in various types of machinery to reduce friction and protect machinery and workpieces. It primarily functions in lubrication, cooling, rust prevention, cleaning, sealing, and cushioning.
Comparison reveals that the functions of hydraulic oil and lubricating oil are somewhat similar, but they operate in different environmental conditions. The conditions for lubricating oil are relatively higher compared to those for hydraulic oil.
Question Two: What is the difference between engine oil and hydraulic oil?
In simple terms: Engine oil primarily serves the purposes of lubrication, cleaning, and cooling, while the primary function of hydraulic oil is for hydraulic operations. Their compositions differ significantly.
Question Three: Are machine oil and hydraulic oil the same?
Machine oil is a general quality lubricating oil derived from the distillation, solvent refining, and bleaching of petroleum lubricating oil fractions. It usually only contains antioxidant additives. Machine oil is divided into high-speed machine oil and general machine oil, used for the lubrication of textile machinery spindles, general machine tools, and other general machinery, categorized by their kinematic viscosity at 50°C. Some machine oils with standard numbers marked as "L" can be replaced by HL hydraulic oil for better performance.
Hydraulic oil is made from highly refined neutral base oils with added antioxidant and anti-rust additives. Hydraulic oil can be classified into six grades based on its kinematic viscosity at 40°C: 15, 22, 32, 46, 68, and 100. It is primarily used for the lubrication of bearing boxes, gearboxes, low-pressure circulation systems, or similar mechanical equipment circulation systems with no specific requirements for lubricating oil and operating temperatures above 0°C. Its service life is more than twice that of machine oil, and this type of oil has good adaptability to rubber seals, with a maximum operating temperature of 80°C.
Question Four: Is anti-wear hydraulic oil a type of lubricating oil?
Lubricating oil is a general term encompassing various types of oils, including hydraulic oil, gear oil, and engine oil. The specific gravity of anti-wear hydraulic oil is approximately 0.85, with the net weight of a standard 200L package currently at 170KG.
Common grades include 32, 46, 68, and ISO 100, which are based on the viscosity of the hydraulic oil at 40 degrees Celsius.
Question Five: Can lubricating oil be used instead of hydraulic oil?
Lubricating oil is a generic term and not a specific type of oil. It includes hydraulic oil. When using hydraulic oil, it is important to select the appropriate viscosity and other relevant performance characteristics.
Question Six: Is hydraulic oil the same as engine oil?
The difference between hydraulic oil and engine oil can be summarized as follows: Engine oil primarily serves the purposes of lubrication, cleaning, and cooling, while the primary function of hydraulic oil is for hydraulic operations. Their compositions differ significantly. I hope this is helpful to you.
Question Seven: What are the consequences of using engine oil as hydraulic oil?
In the short term, there may be no issues, but over time, it can lead to damage to hydraulic components and insufficient pressure.
Question Eight: Hydraulic oil and turbine oil are not lubricating oils, are they?
Hello, both of these belong to the category of industrial lubricants. Hydraulic oil is commonly used in injection molding machines and pump trucks, while turbine oil, also known as steam turbine oil, is primarily used in generators and steam turbines.
Question Nine: What lubricating oil does a bending machine need? Hydraulic oil or anti-wear hydraulic oil?
First, let's briefly understand the structure and operation principles of the bending machine. Bending machines are categorized as manual bending machines, hydraulic bending machines, and CNC bending machines.
Bending machines consist of a frame, worktable, and clamping plate. The worktable is placed on the frame and is composed of a base and a pressure plate. The base is linked to the clamping plate through hinges and is made up of a seat shell, coil, and cover plate. The coil is placed in the recess of the seat shell, and the top of the recess is covered by the cover plate. When the coil is electrified by the wire, it generates electromagnetic force on the pressure plate, thereby clamping the sheet metal between the pressure plate and the base. The use of electromagnetic clamping allows the pressure plate to accommodate various workpiece requirements and process workpieces with side walls. The hydraulic system generates pressure through the die, ultimately shaping the material. Therefore, to lubricate the bending machine appropriately, improve equipment efficiency, reduce machine tool wear, and extend equipment life, it is necessary to use anti-wear hydraulic oil with a viscosity grade of 46# and 32#.
Question Ten: Are hydraulic oil and lubricating oil flammable and explosive materials?
Generally speaking, lubricating oil is considered flammable and explosive. Otherwise, the incident in Tianjin would not have been so severe. However, with proper regulations, transportation protection measures, and reasonable handling, explosions can be prevented.
