Selection principles of industrial lubricants
author: Ann
2024-08-05
Industrial lubricants have a wide range of applications, and there are many types of base oils, such as pure mineral oil, PAO polyɑolefin synthetic oil, polyether synthetic oil, alkylbenzene oil, and biodegradable lipid oil. When they become certain industrial lubricants, they cannot be mixed with each other. For example, after polyether synthetic oil is mixed with other industrial oils, its performance will be significantly reduced.
Industrial application fields mainly include hydraulic oil, gear oil, turbine oil, compressor oil, refrigeration oil, transformer oil, vacuum pump oil, bearing oil, metal processing oil (liquid), anti-rust grease, cylinder oil, heat treatment oil and heat transfer oil, etc. . In addition, there are also greases with lubricating oil as base oil and thickener added. Users of industrial lubricants are companies from all walks of life. Generally, there are many varieties and large quantities used, which not only depends on the price of the product, but also depends on the quality and technical characteristics of the product, and also depends on the quality of technical services. Industrial lubricants have different additives in different applications. Hydraulic oil used outdoors must be suitable for local temperature changes, and hydraulic oil used in indoor closed environments cannot be used. In addition, the usage conditions of heavy-duty gear oil and molding oil are also different. Heavy-duty gear oil contains extreme pressure additives to ensure that it can be used in harsh environments. Molding oil is usually pure mineral oil without additives.
Industrial lubricants include a very wide range of lubricant varieties and practical application areas. Although there are many varieties, the main varieties are: steam turbine oil, bearing lubricant, hydraulic oil, gear oil, machine tool lubricant, grease, metal working fluid, textile lubricant, quenching oil, thermal oil , electrical appliance oil, refrigeration oil, anti-rust oil, etc., which are widely used in industry and are widely familiar to people.
Industrial lubricants include a very wide range of lubricant varieties and practical application areas. Although there are many varieties, the main varieties are: steam turbine oil, bearing lubricant, hydraulic oil, gear oil, machine tool lubricant, grease, metal working fluid, textile lubricant, quenching oil, thermal oil , electrical appliance oil, refrigeration oil, anti-rust oil, etc., which are widely used in industry and are widely familiar to people.
The basic performance and main selection principle of industrial lubricants is viscosity. GB/T3141-94 is the ISO viscosity classification of industrial liquid lubricants. It is equivalent to the international standard ISO3448-1992 "Industrial Liquid Lubricants - ISO Viscosity Classification". Generally speaking, medium viscosity lubricating oil is used under medium speed, medium load and low temperature conditions; high viscosity lubricating oil or extreme pressure oil is used under high load, low speed and high temperature conditions. Anti-wear lubricants; under low load, high speed and low temperature conditions, choose low viscosity lubricants; under wide high and low temperature ranges, light loads and high speeds, and under conditions with other special requirements, choose synthetic lubricants. lubricating oil.
The basic performance and main selection principle of industrial grease is cone penetration, which is used to divide grease consistency grades. Penetration is an indicator commonly used to control the working consistency of various greases. It is used to indicate the performance of the grease entering the friction point and the softness and hardness of the grease. Generally speaking, when the bearing using grease bears a large load and the rotation speed is low, a grease with a small cone penetration should be selected. On the contrary, when the load is small and the rotation speed is high, a grease with a large cone penetration must be selected. Synthetic grease should be used when there are wide high and low temperature ranges, light loads, high speeds, very low temperatures, and other special requirements.
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