How to correctly determine the rolling bearing operation law and failure
Published on：
2022-07-28 16:05
Rolling bearings show a strong regularity in their use, and repeatability is very good. Normal high-quality bearings (rolling bearings) in the beginning of use, vibration and noise are relatively small, but the spectrum is somewhat scattered, the amplitude are small, may be due to some defects in the manufacturing process, such as surface burrs, etc..
After a period of movement, vibration and noise to maintain a certain level, the spectrum is very single, only one or two times the frequency. Very rarely appear three times the frequency spectrum above, bearing state is very stable, into a stable working period. After continuing to run into the use of late, rolling bearing vibration and noise began to increase, sometimes there are heterodyne, but the change of vibration increase more slowly, at this time, bearing crag value began to suddenly reach a certain value.
We believe that at this time, the rolling bearing that performance for the initial failure. At this time, it is required to closely monitor the rolling bearing, pay close attention to its changes. After that, the bearing cliff value and began to decline rapidly, and close to the normal value, and vibration and noise began to increase significantly, its increase began to accelerate, when the vibration exceeds the vibration standard (such as ISO2372 standard), its bearing cliff value also began to increase rapidly, when both more than vibration standard, and cliff value also exceeds the normal value (available cliff relative standard), we believe that the bearing has entered the late failure production, need Timely overhaul equipment, replace the rolling bearing.
Rolling bearing shows late failure characteristics to appear serious failure (generally for bearing damage such as holding shaft, burn, sand frame scattering, raceway, bead wear, etc.) time mostly not more than a week, the larger the capacity of the equipment, the faster the speed, the shorter the interval time. Therefore, in the actual rolling bearing fault diagnosis, once the late fault characteristics are found, the bearing should be decisively judged to be faulty and arranged for overhaul as soon as possible.
Related News
What is a bearing retainer? What are the materials of bearing retainers?
Bearing retainer, also known as bearing cage, is one of the main parts of the bearing. Its role is to wrap and isolate the rolling body and move with it, and usually also has the role of guiding the rolling body. The cage is subjected to stresses caused by friction, strain and inertia forces, and also to the chemically corrosive effects of lubricants, additives in lubricants or substances due to their aging, organic solvents or coolants. Therefore, the design and material of the cage are extremely important for its performance and the reliability of the bearing.
2021-09-15
Rolling bearings in the process of use due to its own quality and external conditions, its bearing capacity, rotational accuracy and friction reduction performance will change, when the performance index of the bearing is lower than the use of the requirements and can not work properly, there will be machinery and equipment to stop running, the function of damage and other abnormal phenomena. If effective maintenance procedures are taken in bearing mounting and dismounting, lubrication, pollution prevention and personnel training, online inspection and timely troubleshooting, the above failures can be avoided. Bearing mounting and dismounting should pay attention to the use of appropriate tools and methods Bearing mounting is a strict maintenance work, the good or bad mounting, directly affect the accuracy, life and performance of the bearing.
2021-09-15
Are the bearings on the wheels of the car lubricated? Why are they never replaced?
Of course there is lubricant inside the wheel bearings of a car, but it is a low-fluidity grease (yellow dry oil). Of course the wheel bearings of a car can break down, but when they do, they can simply be replaced with new bearings. Relatively speaking, the rolling bearings used in small non-load machinery are maintenance-free for life, which is different from the sliding bearings that are often changed.
2021-09-15
How to correctly determine the rolling bearing operation law and failure
Rolling bearings show a strong regularity in their use, and repeatability is very good. Normal high-quality bearings (rolling bearings) in the beginning of use, vibration and noise are relatively small, but the spectrum is somewhat scattered, the amplitude are small, may be due to some defects in the manufacturing process, such as surface burrs, etc..
2021-09-15
Smooth method of rolling bearings
Rolling bearing is an important mechanical components, a mechanical equipment whether the function can give full play to the bearing smooth can be appropriate, smooth is to ensure the normal operation of the bearing necessary conditions, it is on the progress of bearing bearing bearing capacity and use of life plays an important role. No matter what kind of smooth method is used, smooth in the rolling bearing can play the following kinds of effect.
2021-09-15
Website of Suzhou Dongwu Needle Roller Bearing Co., Ltd.
Suzhou Dongwu Needle Roller Bearing Co., Ltd. is located in Suzhou Industrial Park, adjacent to Wusong River and airport road in the south, national highway 312 and Shanghai Nanjing Expressway in the north, with superior geographical location and convenient transportation.
2021-09-15
Contact
-
Add：Shengpu Town, Suzhou Industrial Park
Tel：+86 512-69361528
Fax：+86 512-62821658
Quick Links
Copyright © 2022 Suzhou Dongwu Needle Bearing Co., Ltd. All Right Reserved