626 bearing’s time-dependent causes and solutions.

The cause of 626 bearing failure
About 40% of the failures of 626 bearing are caused by dust, dirt, debris contamination and corrosion. Pollution is usually caused by incorrect use and poor use environment. It can also cause torque and noise problems.
The failure of 626 bearing caused by environment and pollution can be prevented, and the cause of such failure can be determined by simple visual observation. As long as the use and installation are reasonable, the erosion of the miniature bearing is easy to avoid. The feature of erosion is that there are indentations on the raceway of the miniature bearing ring caused by impact load or incorrect installation.

Erosion usually occurs when the load exceeds the yield limit of the material. If the installation is not correct so that a certain load traverses the miniature bearing ring, corrosion will also occur. The pressure pit on the 626 bearing ring will also generate noise, vibration and additional torque.

Solution
Because the cause of the 626 bearing heating is different, the solution is also different. The following is the solution when the temperature of the 626 bearing is overheated:
1. Grease filling method. The so-called grease filling method is to fill the working surface of 626 bearing with an appropriate amount of grease regularly, which is the most commonly used grease lubrication method.
2. The oil cup method. The oil cup method is to set a screw cap oil cup or a pressure oil cup on the bearing seat, rotate the cap regularly or use a grease gun to inject grease. This is also a commonly used grease lubrication method.

3. Pressure grease supply method. Pressure grease supply method relies on grease pump for grease supply. At this time, grease with good fluidity should be selected.
4. Centralized grease supply method. The centralized grease supply method uses a grease pump to supply grease to each 626 bearing and other parts at the same time. Similarly, at this time, the grease should be a grease with good fluidity, oxidation resistance and corrosion resistance, which is also a pressure grease method.

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