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Thrust bearings are an important type of bearings and are widely used in various machinery and equipment. The main function of thrust bearings is to bear axial loads, such as compressors, pumps, turbines, etc. In these equipment, thrust bearings need to withstand a large amount of axial force to ensure normal operation of the equipment.

Thrust bearings are mainly composed of thrust rings, cages, rolling elements and ferrules. Among them, the rolling element is the core component of the thrust bearing, usually using a spherical, cylindrical or conical design. The rolling elements roll between the thrust ring and the ferrule to transmit axial load. The function of the cage is to maintain the position of the rolling elements and guide the rolling elements to roll between the ferrule and the thrust ring. The ferrule is the fixed part of the thrust bearing, which is connected to the main shaft of the equipment to transmit axial load.

Application range of thrust bearings

1.compressor
Thrust bearings are widely used in compressors. For example, in a centrifugal compressor, the thrust bearing needs to withstand a large amount of axial force to ensure the normal operation of the compressor. Thrust bearings are usually mounted on the shaft end of the compressor to prevent axial movement. During the operation of the compressor, the thrust bearing needs to withstand the axial force generated by the impeller to ensure the stable operation of the compressor.

2.Pump
Thrust bearings are also widely used in pumps. For example, in petrochemical pumps, thrust bearings need to withstand a large amount of axial force to ensure stable operation of the pump. Thrust bearings are usually installed at the end of the pump shaft to prevent axial movement. During the operation of the pump, the thrust bearing needs to withstand the axial force generated by the impeller to ensure stable operation of the pump.

3.Turbine
Thrust bearings are also widely used in turbines. For example, in steam turbines, thrust bearings need to withstand a large amount of axial force to ensure the normal operation of the steam turbine. Thrust bearings are usually installed on the shaft ends of steam turbines to prevent axial movement. During the operation of the steam turbine, the thrust bearing needs to withstand the axial force generated by the blades to ensure the stable operation of the steam turbine.

4.Other application areas
In addition to the above application fields, thrust bearings are also widely used in various mechanical equipment in electric power, metallurgy, chemical industry and other fields. For example, in wind turbines, thrust bearings need to withstand the axial force generated by wind; in rolling mills, thrust bearings need to withstand the axial force generated by rolling. In these equipments, thrust bearings play an important role.

Bearings are an indispensable part of mechanical equipment, but they can easily rust in humid, corrosive environments or when exposed to the air. Rust will cause bearing wear and precision loss, and ultimately affect the normal operation of the equipment.

Therefore, taking effective anti-rust measures is crucial to extend bearing life and improve equipment reliability. There are many factors that affect the service life of bearings. Rust is a very important reason. Here are several ways to prevent bearing rust:

1.Surface cleaning: Cleaning must be carried out according to the properties of the surface of the object to be rusted and the prevailing conditions, and the appropriate method must be selected. Commonly used methods include solvent cleaning, chemical cleaning and mechanical cleaning.

2.Surface drying: After cleaning, it can be dried with filtered dry compressed air, or dried with a dryer at 120-170 ℃, or wiped dry with clean gauze.

3.Soaking method: Some small items are soaked in anti-rust grease, and a layer of anti-rust grease is adhered to the surface of the cross-tapered roller bearing. Oil film thickness can be achieved by controlling the temperature or viscosity of anti-rust grease.

4.Brushing method: Used for outdoor construction equipment or products with special shapes that are not suitable for soaking or spraying. When brushing, care should be taken not only to avoid accumulation but also to prevent missed coating.

5.Spray method: Some large anti-rust objects cannot be oiled by immersion. Turntable bearings are generally sprayed with filtered compressed air at a pressure of about 0.7Mpa in a clean air place. The spray method is suitable for solvent-diluted anti-rust oil or thin-layer anti-rust oil, but complete fire prevention and labor protection measures must be adopted.

There are many kinds of bearing materials. Stainless steel may be the most common bearing material. Stainless steel bearings have certain advantages over ordinary bearings.

Compared with ordinary bearing steel, stainless steel bearings have stronger anti-rust and anti-corrosion properties. With appropriate lubricants and dust caps, they can be

used in environments ranging from -60°C to +300°C.

Stainless steel deep groove ball bearings can resist corrosion caused by moisture and several other media. This type of single row deep groove ball bearing, like standard deep

groove ball bearings made of carbon chromium (rolling bearing) steel, has very deep bearing raceway grooves and an extremely high fit between the bearing raceway and the ball.

Stainless steel bearings are widely used in food processing, medical equipment, and pharmaceutical machinery due to their high mechanical strength and large load capacity.

Advantages of stainless steel bearings:

1. Excellent corrosion resistance: Stainless steel bearings are not easy to rust and have strong corrosion resistance.
2. Washable: Stainless steel bearings can be washed and do not need to be re-lubricated to prevent rust.
3. Can run in liquid: Due to the materials used, our bearings and bearing seats can run in liquid.
4. Slow depletion rate: AISI 316 stainless steel does not require oil or grease for corrosion protection. So if speed and load are low, lubrication is not necessary.
5. Hygiene: Stainless steel is naturally clean and does not corrode.
6. High heat resistance: Stainless steel bearings equipped with high-temperature polymer cages or without cages in a complete patchwork structure can operate at higher temperatures ranging from 180°F to 1000°F. (Requires high temperature resistant grease)

The purpose of bearing lubrication is to enable the bearing to operate normally, prevent direct contact between the raceway and the surface of the rotating body, reduce friction and wear inside the bearing, extend the service life of the bearing, enhance the performance of the bearing, and also prevent foreign matter from invading the interior of the bearing and causing Rust and degradation.

01 Manual smoothing
This is the original method. When the lubricating oil of the bearing is insufficient, an oiler is used to supply oil. However, this method is difficult to maintain a constant amount of oil, and there is a greater risk of forgetting to refuel. It is usually only used in situations of light load, low speed or intermittent movement. When operating, install a dust cover or ball valve on the refueling hole, and use Felt, cotton, wool, etc. are used as filter devices.

02 drops of smoothness
It is usually used for light-load and medium-load bearings whose peripheral speed is less than 4~5m/s. A roughly quantitative amount of lubricant oil is supplied from the container through holes, needles, valves, etc. The classic one is the dripping oil cup. The amount of oil dripping depends on the lubrication. There are significant changes in oil viscosity, bearing clearance and oil supply hole location.

03 Oil ring is slippery
The lubricating oil from the oil pool is brought to the bearing by a ring that is hung on the shaft and can rotate (can only be used for horizontal shaft lubrication). It is suitable for medium-speed and high-speed bearings with a shaft diameter greater than 50mm. The oil ring is seamless , when the bearing width-to-diameter ratio is less than 2, only one oil ring can be used, otherwise two oil rings are required.

04 Oil rope is slippery
The capillary and siphon functions of the oil rope are used to guide the lubricating oil in the oil cup into the bearings. It is mainly used for light-load and medium-load bearings with a peripheral speed of less than 4 to 5 m/s. The rest of the oil rope can filter during the entire process. of dyeing.

05 Oil pad is smooth
Use the capillary diffusion of the oil pad to apply the lubricating oil in the oil pool to the surface of the shaft diameter. This method can keep the friction surface clean at all times, but dust will also suffocate the capillary pores and cause insufficient oil supply. The oil supply of oil pad lubrication is usually only 1/20 of that of oil lubrication.

06Oil lubrication
This lubrication method involves immersing part of the bearing in lubricating oil. It is often used for thrust bearings on vertical shafts, but not for radial bearings on horizontal shafts.

07 Oil tank lubrication
The lubricating oil splashed from the rotating parts in the oil tank is supplied to the bearings, which is suitable for bearings with higher speeds.

08 Spray lubrication
The lubrication method of atomizing lubricating oil and spraying it on the friction surface is suitable for high-speed bearings.

Ball bearings are a type of rolling bearing. Spherical alloy steel balls are installed between the inner steel ring and the outer steel ring to reduce friction during power transmission and improve mechanical power transmission efficiency in a rolling manner. Ball bearings cannot bear large heavy loads and are more common in light industrial machinery. Ball bearings are also called ball bearings.

Ball bearings mainly include four basic components: ball, inner ring, outer ring and cage or retainer. Ball bearings for general industrial use meet the AISI52100 standard. The balls and rings are usually made of high-chromium steel, with a Rockwell C-scale hardness of approximately 61-65.

Ball bearings are generally used in low-load mechanical transmission equipment. Because the load-bearing area of ball bearings is small, serious mechanical damage is easily caused under high-speed operation. Therefore, needle roller bearings are often used in heavy-load mechanical transmission to increase the load-bearing area, improve mechanical transmission efficiency, and reduce the Mechanical damage.

Ball bearings change the friction method of the bearing and use rolling friction. This method more effectively reduces the friction between the bearing surfaces, increases the service life of the fan bearing, and therefore extends the service life of the radiator. The disadvantage is that the process is more complex, the cost increases, and it also brings higher working noise.