Handling skills of heating phenomenon during operation of bolted roller bearings

Handling skills for the heating phenomenon during the operation of the bolted roller bearing If there are bumps, rust layers, wear debris, sand, dust and mud on the surface of the bearing device and the surface of the parts that are matched with it, the bearing device is difficult and the device position is incorrect. ; Second, these attachments form abrasives, which are easy to wear and damage the working surface of the bolt roller bearing, which affects the quality of the device. Therefore, before installation, the surface of the journal, the surface of the bearing housing shell, the end face of the shoulder, and the mating surface of the tail parts such as bushings, washers, end caps, etc., should be carefully inspected. If there is a rust layer, it can be removed with a fine file, polished with a fine emery cloth, and the attachments on the surface of the bearing device and its tail parts should also be removed. Notes on the use of bearings: INA bearings are precision components, and their use must also be handled carefully. No matter how high-performance bearings are used, if they are used improperly, the expected high performance will not be obtained. The use of related bearings should pay attention to the following: ⑴. Keep the bearings and their surroundings clean. Even small dust that is invisible to the eye can affect the bolt roller bearing. Therefore, it is necessary to keep the surroundings clean so that dust does not invade the bearing. ⑵. Be careful and dignified to use. If the bearing is severely hit during use, scars and indentations will be produced, which will become a sign of failure. Under stress, it will crack and break, so be careful. 3. Use appropriate manipulation objects. To prevent replacement with an existing object, the appropriate object must be used. Such as special sleeves, presses, etc. ⑷. Pay attention to the corrosion of the bearing. When handling INA bearings, the sweat on your hands will become a sign of rust. Be careful to handle with clean hands, even if you wear gloves. ⑸. Do not unpack the bearing before the installation preparation work is completed to avoid contamination. The life of the bolted roller bearing is more sensitive to the load ratio to the rotational speed, so for multi-stage transmission shafts, if possible, a larger delay should be placed in a later stage; for main shaft bearings, if possible, properly allocate the benefits of external loads The partition between the point and the bearing fulcrum tries to reduce the load of the main shaft bearing, and tries to stabilize the load transmitted to the main shaft bearing to prevent blows and vibrations. The clearance and fit are selected correctly, and the installation accuracy of the bearing is good. The shaft parts of the machine tool, especially the main shaft, are generally assembled with bearings or sliding bearings and twist at very high speeds, occasionally generating very high heat. If this phenomenon is not removed in time, it will lead to overheating of the bearing and cause thermal deformation of the response part of the machine tool, which will make the spindle and tailstock unequal in height, which not only affects the accuracy and processing accuracy of the machine tool itself, but also causes Burn out the bearing.

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