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The main role of regular maintenance of imported bearings

by:JNSN     2021-12-22
1. Maintenance of imported bearings: In order to maintain the original performance of imported bearings in good condition for as long as possible, maintenance, inspection and repair are necessary to prevent accidents, to ensure the reliability of operation, and to improve consumption and economy. It is best for Yiyang to stop regularly in accordance with the operating conditions of the machinery. The content includes monitoring the operating status, supplementing or changing the smoothing agent, and regular disassembly inspections. Maintenance items during operation include the rotating sound, vibration, temperature, state of the lubricant, etc. of the imported bearing. 2. Bearing maintenance: bearing cleaning: when disassembling the bearing for maintenance, first record the appearance of the imported bearing, confirm the remaining amount of smoothing agent, and then wash the bearing after sampling the smoothing agent for inspection. As a cleaning agent, gasoline and kerosene are commonly used. The cleaning of the removed imported bearings is divided into rough cleaning and fine cleaning, and they are placed in the container separately, and a metal net is placed on the bottom first, so that the bearing does not directly contact the dirt of the container. During rough cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the imported bearing, so care should be taken. In the rough cleaning oil, use a brush to remove smooth grease and adhesions. After roughly cleaning, switch to fine cleaning. Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be cleaned. 3. Inspection and judgment of bearing: In order to judge whether the imported bearing can be used after disassembly, it is necessary to check after the bearing is cleaned. Check the state of the raceway surface, the rolling surface, the mating surface, the wear condition of the retainer, the increase of the bearing clearance, and the damage that is not related to the drop of the dimensional accuracy. For non-separable small ball bearings, use one hand to support the inner ring and rotate the outer ring to confirm whether it is fluent. Separate bearings such as tapered roller bearings can separately inspect the rolling elements and the raceway surfaces of the outer ring. Because large bearings cannot be rotated by hand, pay attention to checking the appearance of rolling elements, raceway surfaces, retainers, rib surfaces, etc. Imported bearings are more important and must be carefully inspected. 1. The resultant force of the applied force passes through the axis of the bearing as much as possible, which requires the application point to be symmetrical and stable on average, and apply force through a spherical surface or parallel to the axis. 2. The applied force should be stable and average, and there should be no impact. This requires the use of oil pressure or the use of tools that can apply a stable tension or pressure. The falling metal is cushioned, and the striking force is as gentle as possible. It is best to use a copper rod or a copper hammer to stop the hammering. 3. Prevent force from passing through the rolling elements, which requires force through the inner ring when assembling and disassembling the inner ring (shaft ring), and force through the outer ring when assembling and disassembling the outer ring. 4. The drag force should continue to the level it should be. For example, when the bearing is installed, the force should be stopped when the imported bearing is just installed in the correct position to ensure that the end face of the ring (washer) abuts against the end face of the seat hole or the shoulder of the shaft. It cannot be squeezed too tightly, nor can it be installed incorrectly.
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