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  Many mechanical failures are related to the FAG rolling bearings in rotation. The quality of the bearings has a great impact on the working state of the machinery. Its defects can cause abnormal vibration and noise in the equipment, and even damage the equipment in severe cases. The correct condition monitoring and diagnosis of rolling bearings is an important aspect of equipment optimization management and predictive maintenance of modern enterprises.

  Let's analyze the 4 early warning stages before FAG bearing failure.

  Four early warning stages of rolling bearing failure:

  Corresponding to the structural composition of rolling bearings, rolling bearings have four types of common failures: cage, rolling element, bearing outer ring, and bearing inner ring. There are special mathematical calculation formulas for obtaining the fault frequency of these bearings, but the calculation is more troublesome in actual work. In daily use, the four problem stages that can be distinguished based on experience and testing are:

  The first stage is the budding stage where the bearing begins to fail.At this time, the temperature is normal, the noise is normal, the total amount of vibration speed and frequency spectrum are normal, but the total amount of peak energy and frequency spectrum have signs, reflecting the initial stage of bearing failure. At this time, the real bearing failure frequency appears in the ultrasonic section about 20-60khz range.

  In the second stage, the temperature is normal, the noise is slightly increased, the total amount of vibration speed is slightly increased, and the vibration spectrum does not change significantly, but the peak energy is greatly increased and the spectrum is more prominent. At this time, the frequency of bearing failure appears in the range of about 500hz-2khz.

  In the third stage, the temperature rises slightly, noise can be heard by the ear, the total amount of vibration speed increases greatly, and the bearing fault frequency and its harmonics and sidebands are clearly visible on the vibration speed spectrum, and the noise level is obvious on the vibration speed spectrum. With the increase, the total amount of peak energy becomes larger than the second stage, and the spectrum becomes more prominent. At this time, the frequency of bearing failure appears in the range of about 0-1khz. It is recommended to replace the bearing at the later stage of the third stage, then the rolling bearing failure characteristics such as wear that can be seen by the naked eye should already appear.

  In the fourth stage, the temperature increased significantly, the noise intensity changed significantly, the total vibration speed and vibration displacement increased significantly, and the bearing failure frequency on the vibration speed spectrum began to disappear and was replaced by a larger random broadband high-frequency noise level; The total amount of peak energy increases rapidly, and some unstable changes may occur. Never allow bearings to operate in the fourth stage of failure development, otherwise catastrophic damage may occur.

  According to the research results, in general, if the entire service life of the rolling bearing is counted from the time when the bearing is installed and put into use, the bearing is normal in the first 80% of its life time period. And then corresponding to the development of rolling bearing failure, its remaining life is 10% ~> 20% L10 in the first stage, 5%-10% L10 in the second stage, 1% ~ 5% L10 in the third stage, about It is 1h or 1% L10.

  Therefore, when facing bearing problems in actual work, considering that the fourth stage of the development of bearing failures has unforeseen sudden hazards, it is recommended to replace the bearings at the later stage of the third stage, so as to avoid the expansion of the failure and more serious accidents Occurrence of the roller bearing can guarantee the service life of the rolling bearing as much as possible, and according to the bearing's visible wear and damage to the components, such as rolling bearing failure characteristics, it is more convincing.

  As for the identification of the late stage of the third stage of bearing failure development, it needs to be comprehensively considered based on the above theoretical characteristics combined with the actual temperature, noise, speed spectrum, peak energy spectrum, the total trend of speed and peak energy and actual experience.

If you want to extend the use time of SKF bearings, the last method is to pay attention to it at all times. When the sound and temperature are abnormal during operation, you must be alert in time and make appropriate countermeasures. Eric Bearing Co., Ltd. provides famous brands like NSK, FAG, SKF, etc. If you have purchase needs, please click here to visit our website.

 Eric Bearing Limited is one of reputable bearing distributor located in beautiful and prosperous free-trade port city-Hongkong. We devote to be famous bearing distributor, keep good relationship with world famous authorised bearing manufacturer or distributor, such as Sweden SKF bearings, Germany FAG/INA bearings, Japan NSK bearings, Japan NTN bearings, Japan IKO bearings, Japan KOYO bearings, and USA TIMKEN bearings, Meanwhile, combine many of our bearing distributors in China to integrate their bearing resources and inventory, to provide customers with long-term, stable supply of goods and development support, make customer management benefit was improved and operation stability, to achieve and establish "win-win" development goals with every customer.

Is the Keto Diet Right for You?

Are you tired of diets that advocate low or no fats and crave your high fat meats? You may well be considering going on the keto diet, the new kid on the block. Endorsed by many celebrities including Halle Berry, LeBron James and Kim Kardashian among others, the keto diet has been the subject of much debate among dietitians and doctors. Do you wonder if the keto diet is safe and right for you?

What is the ketogenic diet anyway?

You must be aware that the body uses sugar Alpha Evolution Keto in the form of glycogen to function. The keto diet that is extremely restricted in sugar forces your body to use fat as fuel instead of sugar, since it does not get enough sugar. When the body does not get enough sugar for fuel, the liver is forced to turn the available fat into ketones that are used by the body as fuel - hence the term ketogenic.

Should Women Avoid The Keto Diet

popular topic in the fitness community. It has been found to aid in the loss of weight and lowering the inflammation in the gut. New research has shown positive effects for both men and women adhering to a keto style diet.

First, a keto, or ketogenic diet, is Alpha Evolution Keto designed to keep your body in more of a ketosis state. Ketosis is not abnormal. It is a state where your body is low on carbohydrate fuel. When this occurs, it starts to burn fat, rather than the carbs. The process produces ketones. The average person does not stay in a ketogenic state except during heavy exercise, such as CrossFit, or during pregnancy. A ketogenic diet promotes very low carbohydrate and higher fat intake. The body will in turn, use fat to produce energy. 

How does Keto benefit CrossFit athletes

As stated earlier, a ketogenic diet helps to burn fat, thus losing weight. This low carb diet is similar to the Paleo Diet. We are a strong proponent of Paleo because it promotes higher protein for fuel instead of carbs Alpha Evolution Keto.As we stated earlier, the keto diet uses fat rather than protein for fuel. A keto and paleo diet both burn fat while maintaining muscle.An athlete exercising at a high level, such as CrossFit, will see increased energy and fat loss, without decreasing muscle mass.

How does a women initiate a keto diet

Slowly and carefully. A diet should not be started at a full 100 percent. You should slowly decrease the amount of carbs you consume. Cutting the carbs too quickly can actually have a negative effect. It can stress the body and confuse it, thus causing a wild imbalance.

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