NTN bearings in the work, due to the impact of external or internal factors, so that the original clearance change, accuracy, and even cause "killed" called the clearance change failure. External factors such as excessive interference, the installation is not in place, the temperature rise caused by the expansion of the volume, instantaneous overload, internal factors such as residual austenite and residual stress in an unstable state, is the main reason that causes the failure of the clearance change.
1 NTN bearing lubrication, and the right of the barrier debris and moisture, oil seal should not wear. However, the best to open the bearing box, check the bearing and regularly check the oil seal. Check near the high temperature bearing oil seal condition, to ensure that they are adequate to prevent hot liquids or corrosive liquids or gases along the axis of the bearing infiltration, oil seal ruoyi wear should be replaced as soon as possible.
2 high temperature often bearings in unusual circumstances. The high temperature is also harmful to the bearing lubricant. Sometimes the overheating of the bearing can be attributed to the NTN bearing lubricant. If bearing long-term operation at temperatures over 125 degrees Celsius, will reduce the high temperature bearing life.
The cause of high temperature bearings include: insufficient or excessive lubrication lubrication, the lubricant contains magazine, heavy load, bearing damage, lack of space, and oil have high temperature friction and so on.
Monitor, 3 examination of the operation of the machine, so as to avoid the equipment downtime.
As long as do NTN bearing maintenance and detection, high temperature bearing will be able to do mechanical long-term operation service. Because the earlier discovery problem will be a good solution, effectively increase the service life of the bearing. The following are bearing maintenance and inspection matters needing attention.
1, in the process of using the NTN bearing, regular cleaning is very important. How accurate cleaning bearings? First remove the bearings at five, first with photography and other methods appearance record. In addition, to confirm that the remaining amount of lubricant and lubricant sampling, and then cleaning bearings.
Cleaning 2, NTN bearing rough cleaning and washing suspension, and metal frame use the bottom of the container placed on.
3, rough when washing, in oil use brush Su Qingrun grease or adhesions. If the oil migration shift temperature bearing, note blend due to foreign bodies such as damage the rolling surface.
4, wash, slowly in the oil migration shift bearing, be hard to stop.
Cleaning agent 5, usually used for neutral without water diesel oil or petroleum, based on demand and sometimes the use of temperature alkaline liquid. Regardless of the use of what kind of cleaning agents, are often filtered confrontation clean.
6, after cleaning, immediately after the NTN bearings coated with anti rust oil or antirust grease.