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How to maintain the SKF bearings under normal operation

wallpapers News 2020-11-17

The bearing exhibits strong regularity during its use and its repeatability is very good. Normal high-quality bearings have relatively small vibration and noise at the beginning of use, but the frequency spectrum is a bit messy, and the amplitude is small, which may be caused by some defects in the manufacturing process, such as surface burrs.

 

The cause of the failure  

After a period of exercise, vibration and noise maintain a certain level, and the frequency spectrum is very single, with only one or two-octave frequencies. There is rarely a frequency spectrum above three times the power frequency, and the state of the bearing is very stable, and it enters the period of non-chaotic work.

After bearing operation enters the later stage of use, bearing vibration and noise begin to increase, and sometimes abnormal noise appears, but the increase in vibration changes slowly. At this time, the bearing kurtosis value suddenly reaches a certain value. We believe that at this time the bearing appears to be an initial failure.

Maintain bearing function

In order to maintain the original function of the bearing in good condition for as long as possible, maintenance and inspection are required to prevent accidents in the first place, ensure the reliability of operation, and improve productivity and economy. The maintenance should be carried out on schedule according to the requirements of the mechanical operation. The content includes inspections of monitoring the operating status, adding or replacing lubricants, and scheduled disassembly. As inspection items during operation, there are bearing rotation noise, vibration, temperature, lubricant state, etc.

Bearings cleaning

When disassembling the bearing for inspection, first record the appearance of the bearing, confirm the remaining amount of lubricant and then wash the bearing after sampling the lubricant for inspection. As a cleaning agent, gasoline and kerosene are commonly used. The dismantled bearing is cleaned, divided into rough cleaning and fine cleaning. They are placed in the container separately, and a metal net is placed on the bottom to prevent the bearing from directly contacting the dirt in the container. During rough cleaning, if the bearing is rotated with dirt, it will damage the dynamic surface of the bearing, so care should be taken. In the rough cleaning oil, use a brush to remove grease and adhesions. After it is roughly clean, switch to fine cleaning. Fine washing is to carefully clean the bearing while rotating it in the cleansing oil. In addition, cleaning oil should always be kept clean.

 

ERIC BEARING LIMITED provides high-quality bearings and engineering products from the world\'s leading manufacturers. As Asia\'s leading bearing distributor, we enjoy a high reputation among customers. If you have any questions or comments about bearings, you are welcome to contact us for free, and we will reply to you within two hours.

 


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