Bearings are very important parts in many mechanical equipment in the machinery industry, but everyone should also know that there are too many mechanical equipment for different purposes in our production and life now, and the machinery with different functions Some requirements of the equipment for the bearings used are also very different. Roller bearings are very common in current mechanical equipment. When using mechanical equipment, if the roller bearing is overheated, it is easy to cause damage to the mechanical equipment, so the reasons for the overheating of the roller bearing are all What? 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 per unit area is too large. Most of this happens after the new machine is commissioned or replaced with a new bearing. . 2. There is no outer ring full roller bearing deflection or crankshaft bending and twisting. 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 produce dry friction. 4. The roller bearing has sundries or too much 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 motor main shaft is not aligned, and the error is too large, causing the two shafts to be inclined. When using mechanical equipment equipped with roller bearings, if the roller bearings are overheated, it is most likely caused by the above reasons. At this time, the operation of the mechanical equipment should be stopped in time, and according to the These different reasons to take specific repair measures, only in this way can prevent more serious damage to mechanical equipment. Although there are many types and varieties of full-roller bearings without an outer ring, and they have their own fixed characteristics, they have the following common advantages compared with sliding needle bearings: (1) The starting friction coefficient is small, and the dynamic friction coefficient is small. The difference is small. (2) The standards and specifications are unified, and it is easy to obtain interchangeable products. (3) Easy to lubricate and less lubricant consumption. (4) Generally, a set of bearings can bear radial and axial loads at the same time. (5) It can be easily used at high temperature or low temperature. (6) Bearing rigidity 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 very common among bearing products. When installing needle roller bearings, there are some matters that we need to pay special attention to. Do you know what they are? It doesn't matter if you don't know, because next, the editor will introduce some precautions for installing needle roller bearings in detail. 1. Needle roller bearings should be installed in a dust-free and clean room, and the installed needle roller bearings should be carefully selected. The spacer for needle roller bearing shall be ground under the condition that the inner and outer heights are kept equal. 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 be flexible enough and not stagnant. Put in the specified amount of grease for lubrication. 3. Special tools should be used to install needle roller bearings, so that they can be evenly stressed, but never hit hard. 4. Needle roller bearings should be stored in a clean, ventilated, non-corrosive gas environment, and should be regularly treated for rust prevention.
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