Whether it is engine oil or hydraulic oil, how to distinguish between engine oil and hydraulic oil

The differences between hydraulic oil and motor oil are as follows:

1. Different functions:

The main function of hydraulic oil is to transmit power, similar to the gasoline used in our cars, which can provide relatively large power to the car. And the main function of engine oil is to reduce the friction of the engine and avoid damaging the engine.

2. The composition of additives is different

Due to the difference in function between the two, the ingredients added to the oil are also quite different. Engine oil contains a variety of functional additives such as cleaning and dispersing agents, while hydraulic oil contains additives such as anti-oxidation, anti-rust, and anti-wear additives in the additive composition.

3. Oil viscosity index:

Generally speaking, motor oil is comparatively denser, so it is a bit thicker. Hydraulic oil, on the other hand, has a relatively low density, so it is thinner than engine oil in terms of viscosity.

4. Different colors:

Since the density of the hydraulic oil is relatively low, it should be lighter in color. Whereas, the oil is thicker, so the color looks stronger.

The concept of engine oil is more general, all lubricating oil can be called engine oil is the abbreviation of mechanical oil, its composition is base oil, add a little antioxidant, viscosity can be selected, but the most used may be 100

The hydraulic oil is mainly used in the hydraulic system, is a kind of industrial lubricating oil in the industrial field, ordinary hydraulic oil (and synthetic different) is the base oil in the preparation of antioxidants, anti-wear agents, anti-foaming agents, and so on, a variety of additives. Among them, anti-wear agents contain a large amount of zinc, which should be in the hundreds of ppm. Its viscosity is also optional, and the most used is 46

The main difference between the two is that there are more additives in hydraulic oil, so some have better performance.

In terms of appearance, in general, the hydraulic oil is golden yellow and transparent, and the engine oil has some blueish tinges, and the transparency is not as good as the hydraulic oil.

Your question is a little unclear, are you asking about the difference between hydraulic oil and engine oil? To put it simply, engine oil can be understood as lubricating oil, hydraulic oil is one of the lubricating oils, but it accounts for a large proportion, and at present, hydraulic oil accounts for more than half of the market.

Difference Between Hydraulic Oil and Engine Oil:

1. Hydraulic oil is mainly used in various hydraulic oil systems, its viscosity grade is determined by the working conditions of the hydraulic system, and the additives used are anti-oxidation, anti-rust, anti-wear and other additives, which are completely different from internal combustion engine oils. Therefore, we should never use hydraulic oil as engine oil.

2. From the perspective of the field of use, hydraulic oil is mainly used in the field of industrial lubricating oil, while engine oil is generally used in the field of automobiles, which is some differences in the field of use. From the perspective of external color, the color of hydraulic oil is generally golden yellow and transparent, while the engine oil is relatively blue.

3. From the point of view of manufacturing and production, the general hydraulic oil is mostly semi-refined oil, and they have a significant feature that they are resistant to high pressure, and the production and manufacturing process is slightly worse than that of engine oil. One of the most significant characteristics of engine oil is lubrication, compared with hydraulic oil, its internal tissue particles are smaller than hydraulic oil, and the viscosity is generally higher than that of hydraulic oil.

HL hydraulic fluids are made from neutral base oils with a high refining depth, plus antioxidant and anti-rust additives. HL hydraulic fluids can be divided into six grades according to the kinematic viscosity of 40.

HL hydraulic oil is mainly used for the lubrication of bearing boxes, low-pressure circulation systems or similar mechanical equipment circulation systems of various machine tools with no special requirements for lubricating oil and ambient temperature above O. It can be used for more than twice as long as mechanical oil. The product has good rubber sealing adaptability, and its maximum service temperature is 80.

2.Anti-wear hydraulic oil (HM hydraulic oil) is developed from the anti-rust and anti-oxidation hydraulic oil, it has alkaline high zinc, alkaline low zinc, neutral high zinc type and ash-free type and other series of products, they are all according to 40'cKinematic viscosity is divided into four grades.

Suitable for: l) Anti-wear hydraulic oil is mainly used for heavy-duty, medium-pressure, high-pressure vane pumps, piston pumps and gear pumps of hydraulic systems J mesh YB-D25 vane pumps, PF15 piston pumps, CBN-E306 gear pumps, YB-E80 40 duplex pumps and other hydraulic systems.

2) Hydraulic systems for medium-pressure and high-pressure construction machinery, imported equipment and vehicles. Such as the hydraulic system of computer numerical control machine tools, tunnel boring machines, crawler cranes, hydraulic backhoe excavators and shearers.

3) In addition to the medium and high pressure hydraulic system suitable for various hydraulic pumps, it can also be used for the lubrication of medium-load industrial gears (except worm gears and hyperbolic gears). The ambient temperature of its application is -10 40. The product has good adaptability to nitrile rubber.

HR hydraulic oil is the hydraulic oil used in low and medium pressure hydraulic systems with large changes in ambient temperature. The oil has good anti-rust and anti-oxidation properties, and on this basis, a viscosity index improver is added to make the oil have good viscosity and temperature characteristics. Due to the small amount of this kind of oil, it has not been vigorously developed.

HG hydraulic oil was originally 32G and 68G in ordinary hydraulic oil, and was once called hydraulic guide oil, which is a type of hydraulic oil composed of adding oily agent or friction reducer on the basis of HM hydraulic oil. The oil not only has excellent anti-rust, anti-oxidation and anti-wear properties, but also has excellent anti-stick-slip properties. This product is mainly suitable for various machine tool hydraulic and guide rail lubrication systems or machine tool guide rail lubrication systems and machine tool hydraulic systems.

In the low-speed inert condition, the anti-climb effect is good. Hydraulic guide oil belongs to this category of products.

Engine oil: It is specially used to lubricate the engine, also known as engine lubricating oil.

Hydraulic oil is a hydraulic combustion medium used in the hydraulic system with the help of liquid pressure energy, which plays the role of energy conversion and transmission, anti-wear, system lubrication, anti-erosion gearing, rust prevention, refrigeration, sealing and so on in the hydraulic system. Hydraulic oil is one of the special oils that transmit pressure (power), which are ordinary hydraulic oil, anti-wear hydraulic oil and low condensation point hydraulic oil.

Difference Between Engine Oil and Hydraulic Oil:

Similarities. Engine oil and hydraulic oil also have the functions of anti-wear, refrigeration, anti-rust, cleaning, sealing and so on.

Key role in the difference between the paragraphs.

In terms of key role, there is still a difference between engine oil and hydraulic oil for engineering machine equipment. The key role of lubricating oil is to reduce the obstruction caused by the collision of objects; The key role of hydraulic oil in construction machinery equipment is to transmit pressure (power).