Precautions for full-roller bearings without outer ring Bearings are short and long in many mechanical equipment in the machinery industry, but friends should also know that there are different types of machinery in our manufacturing life today. The equipment is really too much, and the mechanical equipment with different advantages has different requirements for the applied bearings. Roller bearings are often seen in today's mechanical equipment. When the mechanical equipment is used, if the roller bearing is overheated, it is easy to cause damage to the mechanical equipment, which will cause the roller bearing to overheat. What are the reasons? 1. The non-outer ring full-roller bearing and the journal are not uniformly fitted or the contact surface is too small, and the specific pressure on the unit area is too large. This situation is mostly caused by the test run or replacement of the new machine. After the new bearing. 2. There is no outer ring full roller bearing deflection or crankshaft bending or distorting. 3. The quality of the bearing bush is not good, the quality of the lubricating oil does not match, or the oil circuit is blocked. The oil supply pressure of the gear oil pump is too low, and the oil supply is interrupted, causing the bearing bush to lack oil and cause dry conflict. 4. The roller bearing has sundries or excessive lubricating oil and is too dirty. 5. The bearing bush has uneven and excessive wear. 6. When the compressor is installed, the coupling between the main shaft and the main shaft of the motor is not aligned, and the error is too large, so that the two shafts are skewed. When using mechanical equipment equipped with roller bearings, if the roller bearing is overheated, it is very likely to be caused by the above reasons. At this time, the operation of the mechanical equipment should be stopped immediately, and the According to these different reasons to take specific repair failures, only in this way can prevent more serious damage to mechanical equipment. Although there are many examples and types of full-roller bearings without an outer ring, and they have their own fixed characteristics, compared with sliding needle bearings, they have the following common advantages: (1) The starting conflict coefficient is small, and the dynamic conflict The difference in coefficients is small. (2) The standards and specifications are the same, and it is easy to obtain exchangeable products. (3) Lubrication is convenient, and lubricant consumption is less. (4) An ordinary set of bearings can bear radial and axial deflection loads at the same time. (5) It can be easily applied at high temperature or low temperature. (6) The rigidity of the bearing can be improved by applying preload. Bearings are used in many large-scale machinery and equipment. With the continuous development of the machinery industry in recent years, the application of bearing products has become more and more. There are many classifications of bearing products, and needle roller bearings are often seen in bearing products. When arranging needle roller bearings, there are a few things that need our special attention. Do you know what the difference is? It doesn't matter if you don't know, because next, the editor will explain in detail some precautions for arranging needle roller bearings for friends. incident. 1. Needle roller bearings should be installed in a dust-free and clean room, and the installed needle roller bearings should be carefully screened. The spacer for needle roller bearing shall be ground under the condition that the surface and the inside are equal in height. 2. When installing the needle roller bearing, it should be cleaned. When cleaning the needle roller bearing, the slope of the inner ring should be upward, and the hand should feel naive and not obstructed. Put in the specified amount of grease for lubrication. 3. The placement of the needle roller bearing should use a special object so that it can be evenly stressed, but never hit it hard. 4. Needle roller bearings should be stored in a clean, ventilated, non-corrosive gas environment, and rust-proof measures should be carried out regularly.
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