What are the factors that affect the life of precision bearings?

Many customers will ask: What are the factors that affect the life of precision bearings? The editor summarizes the analysis for you as follows; 1. The fit of the shaft and the seat hole 2. The working temperature 3. The cleanliness of the working environment 4. The stress condition (that is, the load spectrum that is often referred to) 5. The lubrication condition of each of the above Minor differences in terms will have a 'great' impact on the actual service life of precision bearings. For example, for the cleanliness of the working environment, depending on the severity of the pollution, the L10 life can be multiplied by a factor, which ranges from 0.1 to 20. , the specific value is determined by experience, in other words, people with different values ​​may vary greatly. The life of precision bearings is divided into calculated life and actual life. For the calculation of life, according to the items encountered, a general rule is summarized, and the accuracy is about 50%, which means that the calculated life is 10,000 hours, and the actual life should be between 5,000-15,000 hours. For the actual life, which is the service life, the easiest way is to do an experiment. The relatively common practice in the automotive industry is to run the bench test and the vehicle test. It is to install your precision bearing on the assembly and run, and the result of running out is what it is. In general, the actual results of bearing life are subject to experiments, because there are too many influencing factors, and the selection of precision bearings is a compromise process. For example, clearance, the general choice is greater than 0, the purpose is to make the starting torque and lubrication better, but in the machine tool spindle and high-precision rotary platform, the clearance is negative, the purpose is for the running accuracy. Therefore, the specific situation is analyzed in detail. If you want to know how long the service life of the precision bearing you need, you can contact our technical engineers, and we can calculate it for you based on your environment, operating scenarios, and the actual data of the precision bearing.