Can you recommend a good industrial gear oil?

Our road construction team still uses a lot of Daoqi lubricating oil. On the basis of heavy-duty industrial gear oil, Daoqi lubricating oil can also improve the low-temperature performance of the oil and avoid tooth surface abrasion. You can go find out.

1. What are the main forms of gear failure? The main forms of gear failure are broken teeth, wear, pitting, and gluing. 2. What is the principle of selecting gear lubrication and oil selection?

1) Determine the type according to the particularity of the application, such as open gear oil, closed gear oil, worm gear oil, etc.

There are too many brands of gear oils, and the industrial gear oils that are easy to use, I recommend Shell or Castrol, are very good.

I have used it, the quality is good, and the main high-end engine oil is the main oil, so I can use it with confidence.

China Oil Engine Run is directly imported from Germany, and it has been used for a while, which is indeed a good grace for the engine!

Heavy Duty Industrial Gear Oil >1100 (Heavy Duty Gear) Metallurgical Rolling, Underground Mining, High Temperature, Impact, Water-Bearing Gear Transmission Heavy Duty Industrial Gear Oil.

There are a lot of easy-to-use industrial gear oils, and the gear oils of large domestic brands are very easy to use, and the cost performance is also very high.

Goodyear's support oil is a good industrial wheel gear oil, because his gear oil is more rigorous in the selection of oil molecules, and he chooses the gear oil with the smallest molecule.

Hello! According to the brand evaluation and sales volume, the top ten brands of industrial gear oil in 2021 were selected, and the top ten were Shell, Castrol Castrol Edge, Lopal, Kunlun, Mobilmobil, Great Wall Lubricants, Tianfa...

1. Select the type and quality level of gear oil according to the contact stress of the tooth surface.

2. Select the viscosity of gear oil according to the linear speed of the gear. Low viscosity oil is selected for high speed, and high viscosity oil is used for low speed.

3. Pay attention to the use temperature. If the oil temperature is high, the viscosity should be large, and the oil with high viscosity should be used in summer and the oil with low viscosity in winter.

4. Pay attention to whether the gear lubrication and bearing lubrication are in the same lubrication system, whether it is a rolling bearing or a sliding bearing.

Viscosity of gear oil.

The American Society of Automotive Engineers (SAE) viscosity classification method is adopted, which are 70W, 75W, 80W, and 85W seven viscosity grades, and different viscosity grades are selected according to the seasonal temperature.

In addition, there is" w"The labels are all winter gear oils. Others are non-winter oils (without the "W" logo). But now there are many gear oils on the market that can be used for all seasons, such as SAE75W-90 and SAE85W-90, which are divided according to 100 kinematic viscosity.

The harshness of the operating conditions of the gears is determined by the type of gear and the load and surface slip speed at which it operates. Ordinary vehicle gear oil can be used for ordinary gear transmission, and hypoid gear oil must be used for hypoid gear transmission.

If the car is driving in mountainous areas or full load, and is often under high load, the work is harsh, and the oil temperature is high, you can also choose hypoid gear oil. The viscosity grade is selected according to the seasonal temperature. The maximum temperature at which the low viscosity of a gear reaches its low temperature determines the minimum temperature to which it is applied.

Therefore, the viscosity grade of gear oil is generally selected according to the temperature conditions of different regions or seasons. When the temperature is high, choose gear oil with high viscosity; Conversely, when the temperature is low, choose a gear oil with low viscosity. For example, the Yangtze River basin and other areas have a winter temperature of not less than -10.

area, No. 90 oil can be used all year round.

In the cold area north of the Yangtze River where the winter temperature is not less than -26, 80w 90 oil can be used throughout the year. Heilongjiang, Inner Mongolia, Xinjiang and other severe cold areas where the temperature is below -26 in winter, use No. 75W oil in winter and No. 90 oil in summer. Other areas can use 85w 90 oil all year round.

1. Ordinary gear oil cannot be used instead of hypoid gear oil. For example, 18 hyperbolic gear oil cannot be used in the gearbox and middle and rear axles of high-speed and heavy-duty vehicles;

2. Don't mistake high viscosity gear oil for good lubrication. The fuel economy of the car is also related to the choice of gear oil viscosity, the use of gear oil with too high viscosity will significantly increase the fuel consumption, especially for high-speed cars, the use of small and medium-sized viscosity of multi-grade gear oil as much as possible, such as 75W W 90 can meet the lubrication protection of the vehicle gearbox and gear, but also play a better fuel-saving effect. Especially in the winter in the north, it is necessary to choose a gear oil with better fluidity at low temperature suitable for the local ambient temperature (here refers to the selection of viscosity), and the viscosity should not be too large during the run-in period or overhaul run-in period of the new car (such as the selection of gear oil with better fluidity such as 85W W W-90);

3. The use of gear oil is contraindicated. In use, it is strictly forbidden to add diesel fuel to the gear oil for dilution, do not add tackifiers or other anti-wear agents and other things, and do not bake the rear axle and transmission because of the impact on winter starting, so as to avoid serious deterioration of gear oil, gum or carbon deposits. If this is the case, switch to a low-viscosity low-temperature flow multigrade gear oil.

4. The amount of refueling should be appropriate. The amount of oil should be appropriate, not too much and not too little. Too much not only increases the oil stirring resistance and fuel consumption, but also may leak the gear oil into the hub bearing through the rear axle half-shaft sealing ring (poor sealing), resulting in the dilution of bearing grease and the brake drum brake failure; Too little will cause poor gear lubrication, too high temperature, and accelerate gear wear.

5. After using gasoline or diesel parts when repairing the gearbox and rear axle, the gasoline or diesel must be cleaned, especially the remaining fuel in the shell, if the gear oil is mixed with fuel, the color of the gear oil will turn brown-red after a period of use. If the amount is mixed too much, it will also cause changes in the quality of the gear oil.

6. Vehicle gear oil is not easy to store for a long time and should not be stored at high temperatures. Storage of vehicle gear oil: It should be stored at room temperature, in a cool and dry place.

It should not be stored at higher temperatures (e.g. higher than 40 °C) for long periods of time. This is because high temperatures can accelerate the breakdown of EP agents or promote reactions between additives, and can also affect the foaminess of gear oils. In addition, water ingress into the oil should be prevented to avoid the hydrolysis of extreme pressure agents to form water-soluble acids.

7. Change the oil in a timely manner. The best oil change interval should be changed to new oil according to the oil change index specified by the vehicle manufacturer, and the oil change interval should be shortened if the vehicle is often under harsh operating conditions. When changing the oil, the old oil should be released while it is hot, and the gears and gearbox should be cleaned before adding new oil.

8. During the use of the vehicle, pay attention to check whether the ventilation holes of the rear axle and the gearbox are not well ventilated, and the abnormal phenomena such as the temperature of the gearbox are too high.

Gear oil is divided into industrial and vehicle, if you ask about the GL-5 grade gear oil of the vehicle, as long as it meets the latest standard of the national standard GB T13895, it can meet the requirements of use. Brand choice is not the first factor when it comes to ensuring quality. In terms of viscosity, 85w140 is mostly used when the temperature is high in summer, and 85w90 is used under low temperature conditions, and the appropriate viscosity can also be selected according to the use case.

If it's industrial, it's a different story.

Industrial gear oil separate gear oil and closed gear oil two categories, the grade has L-CKC, CKD, CKH, etc., according to the specific use requirements to choose, different use conditions and equipment conditions to choose the grade is not the same, viscosity is not the same, and the equipment gear working temperature has an absolute relationship, the choice of viscosity determines its oil film formation and adhesion in the working environment, for gear protection is very critical. If the working environment is harsh, choose synthetic and semi-synthetic gear oils, which are more used in mines and coal mines.

There are also three kinds of industrial gear oil, which can be referred to when choosing.

1. For ordinary gear oil, if the equipment is relatively old and clumsy, and the oil leakage and loss are relatively large, the oil products off the production line of the national standard can be satisfied;

2. National standard (GB T5903) gear oil, normal equipment is recommended to use the industrial gear oil required by the national standard, Kunlun, Great Wall, etc. are the first choice, of course, as long as it meets the national standard, other brands can also choose;

3. The national standard meets the ASTM and other American or foreign standards, and is suitable for imported equipment and precision equipment, as well as equipment with harsh working environment, such as Mobil, Shell, etc.

Brand is also a difference in quality, but it is not the only selection factor.

Gear oil is mainly petroleum lubricating oil base oil or synthetic lubricating oil, and is an important lubricating oil prepared by adding extreme pressure anti-wear agent and oily agent. It is used in various gear transmission devices to prevent tooth surface wear, abrasion, sintering, etc., prolong its service life, and improve the efficiency of power transmission.

Gear oil should have good anti-wear, load-resistant properties and suitable viscosity. In addition, it should also have good thermal oxidation stability, foam resistance, water separation performance and rust prevention performance. Since the gear load is generally above 490 megapascals (MPa), and the hyperbolic tooth surface load is as high as 2942MPa, in order to prevent the tooth surface wear and abrasion caused by oil film rupture, extreme pressure anti-wear agents are often added to the gear oil, and sulfur-phosphorus or sulfur-phosphorus-nitrogen additives are commonly used.

Gear oil is generally required to have the following 6 basic properties:

1. Suitable viscosity and good viscosity temperature, viscosity is the most basic performance of gear oil. The viscosity is large, the lubricating oil film formed is thicker, and the load resistance is relatively large.

2. Sufficient extreme pressure and anti-wear.

Extreme pressure wear resistance is the most important property and characteristic of gear oil.

3. Good demulsibility.

The emulsion and deterioration of gear oil when exposed to water will seriously affect the formation of lubricating oil film and cause abrasion and wear.

4. Good oxidation stability and thermal stability.

Good thermal oxidation stability ensures the service life of the oil.

5. Good foam resistance.

The resulting foam will not disappear soon, which will affect the formation of oil film at the gear mesh, and the entrained foam will reduce the actual working oil volume and affect the heat dissipation.

6. Good anti-rust and anti-corrosion.

Because the industrial gear oil contains sulfur and phosphorus additives, the smell is unpleasant in the process of use, and many users have reported this, so Tieba further adjusts the formula of the industrial gear oil with mineral oil as raw material to overcome the problem of unpleasant smell and is conducive to health and environmental protection.

Tieba gear oils are excellent performance gear oils with outstanding extreme pressure characteristics and load carrying capacity, making them suitable for use in all closed gears with cyclic or splash lubrication. Tieba gear oils are made from highly refined base oils that provide excellent performance at extremely high and low temperatures, with special additives such as antioxidant and anti-degradation additives. It has the characteristics of reducing friction, which can reduce power consumption and reduce the overall oil temperature.

Tieba series gear oil can prevent corrosion and rust, has excellent water separation characteristics, and has a strong anti-foaming ability during use.

Regarding the landlord's concern about "which vehicle gear oil is better?" "Here's my personal opinion:

In fact, if you have the conditions, it is recommended that you directly use the original specified model of gear oil to do this, if you use the outside or choose the big brand products as well, Mobil, Castrol can be. The definition and function of gear oil are as follows:

1. Gear oil mainly refers to the lubricating oil of the transmission and the rear bridge, which is different from the engine oil in terms of use conditions, its own composition and performance, and the gear oil mainly lubricates the gears and bearings, prevents wear and corrosion, and helps the gear to dissipate heat and other functions;

2. Automobile gear oil is used for gear transmission mechanisms such as automobile steering gear, transmission and drive axle, due to the high surface pressure during gear transmission;

3. Therefore, gear oil plays an important role in the lubrication, wear resistance, cooling, heat dissipation, anti-corrosion and anti-rust prevention, cleaning and reducing the impact and noise of the tooth surface.

Gear oil can be divided into vehicle gear oil and industrial gear oil according to its use, and the difference between the two in terms of use conditions determines its performance. So what is the difference between industrial gear oil and vehicle gear oil?

1. Different occasions are used

Industrial gear oil is used for the lubrication of stationary industrial equipment gearboxes, and vehicle gear oil is used for the lubrication of mobile on-board gearboxes. That is to say, the ambient temperature of the latter oil varies greatly, and it is a mobile equipment, and the high and low temperature requirements are relatively high. Therefore, vehicle gear oil needs to be divided into multi-grade and single-grade.

2. Medium load

Heavy-duty vehicle gears are generally hyperbolic gears, which are more demanding than industrial gears, which are often cylindrical or tapered. As a result, the load carrying capacity of medium-duty vehicle gear oil is equivalent to that of heavy-duty gear oil. Therefore, medium-duty vehicle gear oils with comparable viscosity grades can replace heavy-duty industrial gear oils.

3. Classification of regulations and delays

The viscosity grade of vehicle gear oil is classified according to the regulations of the Society of Automotive Engineers SAE, and the kinematic viscosity is determined at 100 hours. Industrial gear oils are classified according to the regulations of the International Organization for Standardization, and the kinematic viscosity is determined at 40 hours. Because of the acre, this substitution must be converted.

4. Classification

ISO only specifies the classification symbol C for industrial gear oils, and does not specifically specify the grouping symbols for vehicle gear oils.

Knowledge development

Can industrial gear oil be used in automobiles

The composition of industrial gear oil and vehicle gear oil is very similar, but industrial gear oil can not be used in the vehicle manual variable gear and rear axle gearbox, in addition to the extreme pressure performance can not meet the requirements, other thermal oxidation stability, rust and so on can not meet the requirements.

The use of vehicle gear oil instead of industrial gear oil also depends on the situation, vehicle gear oil with 100 grades, industrial gear oil with 40 viscosity as grades, to be converted to know whether the viscosity value is similar, can not be directly replaced.