How deep groove ball bearings work
Release time:
2022-03-22
Deep groove ball bearings mainly bear radial load, and can also bear radial load and axial load at the same time. When it is only subjected to radial load, the contact angle is zero. When the deep groove ball bearing has a large radial clearance, it has the performance of an angular contact bearing and can bear a large axial load. The friction coefficient of the deep groove ball bearing is very small, and the limit speed is also high.
Deep groove ball bearings mainly bear radial load, and can also bear radial load and axial load at the same time. When it is only subjected to radial load, the contact angle is zero. When the deep groove ball bearing has a large radial clearance, it has the performance of an angular contact bearing and can bear a large axial load. The friction coefficient of the deep groove ball bearing is very small, and the limit speed is also high.
Bearing characteristics
Deep groove ball bearings are the most commonly used rolling bearings. It has a simple structure and is easy to use. It is mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has a certain performance of angular contact ball bearing and can bear combined radial and axial loads. It can also be used to bear pure axial load when the rotational speed is high and the thrust ball bearing is not suitable. Compared with other types of bearings with the same size and size as deep groove ball bearings, this type of bearing has a small friction coefficient and a high limit speed. However, it is not resistant to impact and is not suitable for bearing heavy loads.
After the deep groove ball bearing is mounted on the shaft, within the axial clearance range of the bearing, the axial displacement of the shaft or the housing can be limited in two directions, so it can be axially positioned in both directions. In addition, this type of bearing also has a certain self-aligning ability. When it is inclined 2' to 10' relative to the housing hole, it can still work normally, but it has a certain impact on the bearing life.
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Precautions for the use of deep groove ball bearings
For deep groove ball bearings, the bearing load is too small during operation, which will cause sliding between the ball and the raceway, which will become the cause of scratches. This is especially true for large deep groove ball bearings with heavy ball and cage weights. In many cases, bearings will corrode. There are many reasons for bearing corrosion. The most common factors in our daily life are the following:
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Bearing precision is low: choose the specified precision grade bearing. Spindle bending or box hole is not centered: repair the spindle or box.
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Maintenance and care of bearings
Dismantling of bearings is carried out for regular maintenance and bearing replacement. After disassembly, if the bearings continue to be used, or if it is necessary to check the status of the bearings, the disassembly should be carried out with the same care as when they are installed. Be careful not to damage the bearing parts, especially the disassembly of interference fit bearings, which are difficult to operate.
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The number of revolutions or hours that a bearing experiences before pitting occurs under a certain load is called the bearing life.
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The main problems faced by China's bearing industry
According to the National Bureau of Statistics data, in 2011 China bearing manufacturing industry scale (annual sales revenue of more than 20 million yuan) a total of 1,416 enterprises, the annual industrial output value of 193.211 billion yuan, an increase of 27.59%; sales revenue of 191.097 billion yuan, an increase of 30.30%; total profit of 12.523 billion yuan, compared with the previous year's growth of 26.54%. It is expected that by 2015, China's bearing production is expected to exceed 28 billion sets, the main business income is expected to reach 210 billion yuan, becoming the world's largest bearing production and sales base.
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The origin of the development of bearings
An early form of linear motion bearing was a row of wooden rods placed under a row of skids. Modern linear motion bearings use the same principle of operation, except that sometimes balls are used instead of rollers.
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