VMGZ decoding - hydraulic oil
Content
Most often, VMGZ oil is used as a working fluid in hydraulic mechanisms. Explanation of this name: multigrade hydraulic oil thickened.
Application of VMGZ oil
VMGZ oil is used in hydraulic control systems, as well as hydraulic drives in the following types of equipment:
- Road special equipment
- Lifting and transport equipment
- Construction machinery
- Forestry equipment
- Various tracked vehicles
The use of VMGZ ensures the reliability of the operation of the technical device, as well as the start of the hydraulic drive at extremely low air temperatures.
The most important plus of this oil is that it does not need to be changed when working in different seasons. The oil is suitable for operation at temperatures from -35 ° C to + 50 ° C, depending on the type of pump used in the system.
Technical characteristics of oil VMGZ
In the production of this oil, low-viscosity mineral components with a minimum dynamic viscosity are used as raw materials. These components are obtained from petroleum fractions using hydrocracking or deep waxing. And with the help of various additives and additives, the oil is brought to the desired consistency. Types of additives added to VMGZ oil: antifoam, antiwear, antioxidant.
Hydraulic oil exhibits excellent lubricating properties, almost no foaming, this important property helps to avoid oil loss during operation. Also, this product is resistant to the formation of precipitation, which has a positive effect on the durability of the mechanisms. This product has high anti-corrosion properties and has established itself as an excellent tool for protecting metal. One of the most valuable parameters is the ability to start mechanisms without preheating the oil.
Performance characteristics of VMGZ oil:
- Viscosity not less than 10 m / s at 50 ° С
- Viscosity no more than 1500 at 40 ° С
- Viscosity index 160
- Flash at t not lower than 135 ° С
- hardening t -60 ° С
- Mechanical impurities are not allowed
- No water allowed
- The oil must be resistant to metal corrosion
- Density no more than 865 kg / m3 at 20 ° C
- The proportion of sediment is not more than 0,05% of the total mass
Oil producers VMGZ
The leading producers of such oil are the 4 largest companies: Lukoil, Gazpromneft, Sintoil, TNK.
Most of the consumers of this oil give their choice in favor of the companies Lukoil and Gazprom. There is a strong opinion among workers and drivers of special equipment that the hydraulic oils of these companies are produced on the same equipment from the same fractions of oil.
You can also often hear negative responses about the prices of imported hydraulic oils, for example, the simplest Mobil oil will cost 2-3 times more than VMGZ from domestic manufacturers.
Tolerances are an important aspect in the selection of hydraulic oil, as well as in the selection of engine oil for a car.
When choosing a hydraulic oil, it is important to choose a quality product, otherwise, along with low-quality VMGZ oil, a number of problems are also acquired:
- Increased contamination of hydraulics
- Clogged filters
- Accelerated wear and corrosion of parts
As a result, downtime occurs in repair or production work, which entails much higher costs than the difference in price between high-quality oil and a cheap fake.
The main difficulty in choosing a manufacturer of VMGZ is the almost identical composition of oils from different manufacturers. This is due to the relatively small base set of additives that all companies use. At the same time, trying to win in the competition, each of the manufacturing companies will focus on certain properties of the oil, even if it does not differ from the competitor.
Hack and predictor Aviator
VMGZ oil is an irreplaceable companion of hydraulic mechanisms. However, you need to carefully approach the choice of oil and take into account the following aspects:
- When choosing, it is important to carefully study the specification of the hydraulic mechanism in order to find out what oil tolerances are provided in this mechanism.
- It is important to check the oil for compliance with ISO and SAE standards
- When choosing VMGZ oil, price cannot be considered as the main criterion, this may turn out to be dubious savings
Video: VMGZ Lukoil
Questions and answers:
How is Vmgz oil deciphered? It is a thickened multigrade hydraulic oil. This oil does not form sediments, which allows the use of mechanisms in the open air.
What is Vmgz oil used for? This multigrade hydraulic oil is used in equipment constantly operating in the open air: construction, logging, lifting and transport, etc.
What is the viscosity of Vmgz? At a temperature of +40 degrees, the viscosity of the oil is from 13.5 to 16.5 sq.mm / s. Due to this, it retains its properties at pressures up to 25 MPa.
