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Application and protection of deep groove ball bearings

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Since the reform and opening up, we have gradually entered the WTO from the international competition, and our bearing profession has been developing steadily and rapidly.
According to the annual report of the National Bureau of Statistics; in 2004, the national bearing professional state-owned and state-owned holding companies and non-public corporations with annual sales of more than 5 million yuan have reached 927; in 2003, the total occupational bearing output value was 4.1 billion sets; bearing sales revenue was 39.2 billion yuan; China's bearing sales have jumped to the fourth place in the world; it has become a major international bearing production country. Especially the miniature and small deep groove ball bearings have become the most productive countries in the world. (Question: China Economic Net)
Deep groove ball bearings are a sub-class of bearings; because of their wide application and long service life, they are widely used in modern equipment production; the processing precision and quality of equipment have been greatly promoted; Bearings will surely get a lot of use in the equipment and equipment that will be used in the future; the market prospects will become wider and wider.
The extensive use of deep groove ball bearings has benefited from the recognition of the vast equipment operators; they have been accepted by their excellent functions. Individuals have been engaged in the protection and protection of mechanical equipment for many years, and have touched deep groove ball bearings in many ways. There is more to know about application and protection; summed up some experiences and discussed with us.
Overview Deep groove ball bearings are usually composed of a pair of ferrules; a set of rigid balls and a set of cages; deep groove ball bearing type code 6. It is the most produced; the most widely used type of bearing. The deep groove ball bearing layout is simple; it is easy to use; it is the largest production batch and accepts the necessary axial load. When the radial clearance of the bearing is increased; the function of the angular touch ball bearing; a large axial load can be accepted.
Deep groove ball bearings are primarily used to accept pure radial loads; they can also accept radial and axial loads; when they only accept pure radial loads; the touch angle is zero. When deep groove ball bearings have larger diameters When it is in play; it has the function of an angular touch bearing; a large axial load can be accepted. The conflict coefficient of deep groove ball bearings is very good. Antagonism and thieves testis 艽蟮 mother 咚僭 た鱿 た鱿 罟 罟 罟 罟 罟 韧 韧 蛑岢 蛑岢 蛑岢 蛑岢 杏 杏 杏 杏 杏 杏 杏 杏叽缦嗤 渌嘀岢 渌嘀岢 冉 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 淮 俑 俑 俑 俑 俑 俑 俑 俑 俑 俑 俑 俑 俑I罟 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 谥嵘 谥嵘 螅豢墒 螅豢墒 峄蛲 峄蛲 峄蛲 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 嵯蛭 保 保 保 保 保 保 保 保 保 保 保 保 保 ( ( ( When the circle is relatively skewed (does not exceed 8-16 according to the clearance), it can still work normally. However, there is a skewed existence; it is necessary to reduce the life of the bearing.
Deep groove ball bearings are comparable to other types of bearings of the same type; conflicts are most lost. Antagonism, fine 撸 撸 谧俳 谧俳 捎 捎 捎 捎 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 蛑岢 豢捎 豢捎 豢捎蚋汉伞H缛籼岣咂缛籼岣咂2. 捎 耗 耗 耗 嗤 嗤 嗤 猜 炔 炔 炔 炔 炔 炔 炔 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 灞 岣摺 岣摺 岣摺 岣摺 岣摺 岣摺 岣摺Simple; compared with other types, it is easy to reach higher production precision; so it is easy to produce in large quantities in series; the production cost is also low; the application is extremely applicable. When the radial clearance is selected, the axial load can be added; The touch angle is zero when the force is applied. When there is axial force; the touch angle is greater than zero. Usually, the punching wave cage is used; the solid body cage is used; sometimes the nylon frame is also used. Deep groove ball bearings in addition to the basic type; there are various variant layouts; such as: deep groove ball bearings with dust cover, deep groove ball bearings with rubber seals, deep groove ball bearings with snap grooves, fitted Deep groove ball bearings with large load capacity of ball notches, double row deep groove ball bearings. However, they all have the following characteristics:
1. In the layout, each ferrule of the deep groove ball bearing has a continuous groove type raceway having a cross section of about one third of the circumference of the ball. It is primarily used to accept radial loads; it also accepts a certain axial load,
2. When the radial clearance of the bearing increases; the nature of the angular touch ball bearing; the axial load that can be alternated in two directions,
3, conflict. ä¿‘æ’¸ 4, simple layout; low cost of production; simple to achieve higher production accuracy,
5, usually choose stamping wave cage; inner diameter greater than 200mm or high speed operation of the bearing; use the car body cage.
Equipment protection Deep groove ball bearings are the most representative roll bearings; they are widely used. They are suitable for high-speed and even high-speed operation; they are very useful; they have low protection costs and long operating cycle. However, professional technicians are required to regularly view the protection to ensure the safety, reliability, and improved work cycle and quality of the operation.
The equipment of a deep groove ball bearing deep groove ball bearing requires the equipment personnel to have high professional skills, and strictly implement the skill needs and operating procedures in the equipment process.
Whether the bearing equipment is good or bad; will affect the accuracy, life and function of the bearing. Therefore; please fully research the bearing equipment; bearing equipment should be carried out in accordance with the following operating specifications.
1Clear the bearing and related parts (for the grease-smooth bearing and the double-sided oil seal or dust cover; there is no need to clear the seal bearing equipment before.).
2 Check the scale and finishing status of the associated parts.
3 equipment method Bearing equipment should be based on the bearing layout; scale size and the cooperative nature of the bearing components; the pressure should be directly added to the end face of the ferrule; the pressure should not be transmitted through the roll.
Bearing equipment usually uses the following methods:
Press-in cooperation: the inner ring of the bearing and the shaft are tightly cooperated; when the outer ring and the bearing housing hole are loosely cooperative; the bearing can be press-fitted on the shaft first; then the shaft is loaded into the bearing housing hole together with the bearing; When pressing, it is on the end face of the bearing inner ring; pad is made of soft metal material equipment bushing (copper or mild steel); bearing outer ring and bearing seat hole are tightly cooperated; inner ring and shaft are loosely cooperative; bearing can be Press into the housing bore first; then the outer diameter of the device sleeve should be slightly smaller than the diameter of the housing bore. If the bearing ring and the shaft and the seat hole are tightly cooperated; the inner and outer rings of the equipment should be pressed together into the shaft and the seat hole; the layout of the equipment casing should be able to hold the end faces of the inner and outer rings of the bearing together.
Heating cooperation: After heating the bearing or bearing seat; using thermal expansion will transform the tight cooperation into loose cooperation equipment. It is a common and labor-saving device approach. This method is suitable for the equipment of bearings with large interference; before the hot loading, the bearing or the ferrule of the separate bearing can be placed in the fuel tank and heated evenly at 80-100 °C; then it is taken out from the oil and quickly loaded onto the shaft; After the cooling is avoided, the inner ring end face and the shoulder are not tightly attached; after the bearing is cooled, the axial fastening can be performed. When the outer ring of the bearing is tightly cooperated with the bearing seat made of light metal; the hot-filling method of the heated bearing seat is adopted; the cooperating surface can be prevented from being scratched. When the bearing is heated by the oil tank; there should be a grid at a certain interval from the bottom of the box; The hook hangs the bearing; the bearing can not be placed on the bottom of the box; to prevent the sinking of impurities into the bearing or uneven heating; there must be a thermometer in the fuel tank; strictly control the oil temperature should not exceed 100 °C; to avoid the tempering effect; The hardness drops.
The equipment method of the bearing; under normal conditions, the shaft rotation is mostly; therefore, the cooperation between the inner ring and the shaft is a win-win cooperation; the cooperation between the outer ring of the bearing and the bearing chamber is the cooperation of the gap. Bearing operation to check the bearing equipment is completed; should be checked immediately; it has been determined whether the equipment is normal.
Second, work protection and reliable protection of the operation is the primary method to ensure the long-term operation of the bearing, the equipment should be in time to ask the professional and skilled personnel to view and protect the equipment, the first few aspects:
1 Check the operating temperature of the bearing, which needs to be below 65 degrees.
2 Check the axial movement of the working part. The first is whether the clearance of the bearing meets the needs.
3 Check the runway for any defects such as pitting, corrosion, pits, cracks, etc.
4 smooth oil or smooth grease smooth condition, should be replaced or added in time, but not too much, need one-third to one-half of smooth oil, one-third of smooth grease.
The third example analyzes the urea deep hydrolysis equipment as the terminal equipment for the occupational wastewater treatment of chemical fertilizers. The central equipment hydrolysis pump is multi-stage, high-speed, high-temperature, high-pressure equipment. Unstable operation over the years has greatly affected the production of urea.
The primary watch now has a short cycle of use and a big sensation in the machine. After our analysis, the type of bearing is not suitable. After carefully summarizing the characteristics of the hydrolysis pump, the resolution uses deep groove ball bearings; we conclude that we have drawn up the equipment application and protection procedures for the bearing. Strict implementation. After the transformation, the operation status is outstanding, and the operation cycle is greatly added, which strongly supports the stable production and high yield of our company's urea products.
Summary China's current demand for bearings is comparable; such as cars, cars, motorcycles, clicks, household appliances and automated work machinery and other mainframe occupations; South-to-North Water Transfer, West-East Gas Transmission and the current closing Shanghai World Expo; all confirm China's complete construction Equipment and engineering equipment have a larger need.
The extensive use of deep groove ball bearings will promote the further improvement of the quality of China's equipment, and vigorously promote the process of modernization in China; as a broad equipment operator, we should do our personal work with a higher sense of responsibility and mission; China's equipment manufacturing operations do our best.

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