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37 years of precision bearing manufacturers talk about the difficulties in bearing manufacturing-

by:JNSN     2023-02-14
Just talking about the processing process, from raw materials to heat treatment methods, from manufacturing to assembly and packaging, all the processing processes of precision bearing manufacturers are available in China, and the level of automation is also very high. However, the key to manufacturing bearings is not to make them look like they are made, but to have good precision, bearing capacity and service life. The technical engineers of precision bearing manufacturers who have assembled the bearings know that if you want the bearings to work well, the most important thing is to control the bearing clearance. Bearing clearance is the gap between the rolling body of the bearing and the housing of the inner and outer rings of the bearing. The so-called bearing clearance refers to when the bearing is not installed on the shaft or the bearing box, the middle ring or the outer side is fixed, and then the side where the bearing clearance is not fixed is moved axially or radially amount of movement. According to the moving position, it can be divided into axial clearance and radial clearance. The size of the clearance during operation (referred to as the working clearance) has an impact on the bearing's rolling fatigue life, temperature rise, noise, vibration and other characteristics. The bearing clearance is generally adjusted during the assembly process. In fact, the specific effect of the clearance adjustment has been determined during the bearing production. The basic structure of a bearing is a bearing steel ball, an inner hole, and an outer side, and most of them also have a ball bearing, a sealing cover, and the like. Among them, the accuracy of the inner hole, outer surface and steel ball determines the accuracy of the clearance. If the accuracy of any of the three specifications is not enough, even if the clearance is not considered, the accuracy of the bearing itself will not be too high, and the change of the clearance will not be affected. to good results. Therefore, the manufacturing accuracy of bearing parts should be regarded as a key link in bearing manufacturing. In addition, even if we can improve the specifications, the clearance of the bearing specifications after assembly is good, and the performance of high-precision operation after assembly and adjustment, but whether it can operate stably for a long time is another test. The demand for continuous stability lies to a large extent in the raw material itself. Whether the raw material is wear-resistant determines whether the good dimensional accuracy can always be maintained. When it comes to raw materials, my country has already made many scientific and technological achievements on high-end bearing steel, but it is still in the stage of application and promotion, and it will take time to improve the overall bearing capacity. Therefore, raw materials are still considered to be the focus of bearing manufacturing. It can be said that after overcoming the raw materials, heat treatment process, machining process, and assembly process, our precision bearing manufacturers will definitely be able to create better bearings. Only when the torque is accurate can the rotation be stable! This article is from Co., Ltd., a precision bearing manufacturer for 37 years, please indicate the source and link (http:// )
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