Maintenance of deep groove ball bearing
In order to maintain the original state of deep groove ball bearing in good condition for as long as possible,
maintenance and repair shall be carried out to prevent accidents, ensure the reliability of operation and improve productivity and economy.
The maintenance shall be carried out regularly according to the operation standard of corresponding mechanical operation conditions. The contents include monitoring the operation status, replenishing or changing the lubricant, and regular disassembly inspection.
Keep the bearing and its surrounding environment clean
I don’t have to tell you what’s going on. Even if the invisible dust enters the NTN bearing, it will wear the bearing. To put it bluntly, it’s a truth that you can’t rub any sand in your eyes!
Careful and accurate installation shall be carried out during use and installation
You don’t even know such a little common sense. If you don’t, don’t make deep groove ball bearings. Go home and play. The most important thing is not to allow strong stamping. It’s not allowed to hit the bearings directly with a hammer. You’re not afraid of being damaged. If you’re deformed, what should you do? Bear the loss yourself. Ha ha, and it’s not allowed to transfer pressure through the body.
Use appropriate and accurate installation tools
Try to use special tools and try to avoid using cloth and short fiber.
Prevent the bearing from rusting and do not use blisters
Ball bearings are made of refined steel, but they are also afraid of water. If you don’t believe it, you should put them in the water bar. Hehe, when taking the bearings by hand, you should fully wash the sweat from your hands and apply high-quality mineral oil before operation. In the rainy season and summer, you should pay special attention to rust prevention. Don’t tell me what rust is afraid of. Well, try it yourself and see what the result will be!
Even if a few bearings have abnormal sound and irregular sound under fatigue spalling state, it is possible to hear it if you are skilled.
Using bearing vibrator, the amplitude and frequency of vibration are quantitatively measured and analyzed, and the damage condition of deep groove ball bearing is deduced.
However, due to the different service conditions and measuring positions of the bearing, it is necessary to make use of the measured values of the machinery to determine the judgment basis.
The bearing temperature usually rises slowly after the start of operation and reaches saturation after a period of time. The steady temperature of bearing varies with mechanical heat capacity, heat release, speed and load.
When the bearing temperature rises abnormally when it is not saturated, consider the reasons shown in the following page, stop the operation and take necessary countermeasures.
It is effective to investigate the grease and lubricating oil in use to understand the operation condition of NTN bearing. Of course, the leakage, discoloration and deterioration of grease or oil can be judged from the moisture, sundries and iron powder contained therein.
When it is considered that there is lubricant leakage and foreign matters such as iron powder and metal powder are mixed, the leakage, temperature and vibration of deep groove ball bearing shall be observed quantitatively on a regular basis. If it is considered to be abnormal, early maintenance shall be carried out.