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Removal of tapered bore bearings
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| Time：2016.09.29 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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We all know that idlers are the heart of belt conveyors. The good sealing performance of the roller bearing requires strict quality control of the component parts to ensure the local structural and sealing properties, so that the roller bearing seat has a good sealing performance. While extending the gap and length of the maze to improve the sealing effect, can extend the roller life. Roller bearing housings are widely used in open dusty and corrosive environments, such as mines, power plants, steel mills, stone plants, cement plants and coking plants, coal preparation plants, saltworks, soda plants, fertilizer plants, All transport sites. According to the size of different enterprises, the needs and the use of different number of rollers, according to their own actual situation to meet the production and processing needs. As most of the belt machine work environment, dust pollution is serious, and corrosive, in particular, some hard particles on the roller tube body wear and tear unusual. Although a lot of manpower and material resources are often used to repair the roller, however, the use of roller bearing large, frequent early failure, resulting in harsh sounds until the card is completely damaged, people can not keep up, failure downtime Which restricts the normal operation of belt conveyor production line. And a substantial increase in labor intensity, regular work in high dust environment in the human health also caused serious harm. For a long time, the traditional roller in the harsh environment of the life of only a few hundred hours. Early roller failure, resulting in frequent conveyor failure, tear tape, and even casualties occur accidents are not uncommon.
Bearings should be removed in the same way as during installation. Attention not to damage the bearings and the parts, especially the interference fit bearing disassembly, operation is difficult. Therefore, in the design stage to consider in advance to facilitate the demolition, according to the need to design the demolition tool is also very important. In the demolition, according to the drawings to study the demolition method, order, investigate the conditions of cooperation with the bearings in order to obtain the foolproof operation.
1, the demolition of the outer ring Interference with the demolition of the outer ring, the outer circumference of the shell in advance to set a few outer ring extrusion screw with screws, one side to tighten the screw, while demolition. These screw holes are usually closed with blind plugs, tapered roller bearings and other separate bearings, the shell shoulders set on the shoulder a few incision, the use of pads, with a press disassembly, or gently tapping demolition.
2, the cylinder bore bearing demolition The inner ring of the demolition, you can use the latest mechanical pull out the simple. At this point, pay attention to let the inner ring to withstand its pull force. Large-scale bearing inner ring demolition using hydraulic method. Oil pressure is provided through the oil holes provided on the shaft so as to be easily drawn. If the bearing with large width is used in combination with the drawing tool, the oil pressure is removed. NU-type, NJ-type cylindrical roller bearing inner ring can be removed using induction heating method. A method of heating a portion in a short period of time and drawing the inner ring after expansion.
3, the demolition of the taper hole bearing demolition relatively small bearing with an adapter sleeve, fastening the shaft with the stalls support the inner ring, the nut back a few times, the use of pad hammer knocked demolition. Large bearings, the use of hydraulic disassembly easier in the taper hole on the oil hole in the oil pressure, the inner ring expansion, demolition of the bearing method. Operation, there is the possibility of a sudden out of the bearing, the best use of the nut as a block as well.
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