NTN bearing regular inspection maintenance and maintenance method of knowledge - bearing

To examine the bearing on a regular basis, it is important to be in the best condition to maintain the bearing work, can also be found the problem. About bearing matters that should be paid attention in use and related knowledge. First of all, we have to stress is that it is important to keep the NTN bearing lubrication and clean. So when we inspect the NTN bearing before, should first clean the surface of NTN bearing, and then remove the perimeter of the bearing parts. Everyone should pay attention to, oil seal is very fragile parts, so in check and need to be careful, when disassembling do not excessive force, so as not to cause damage to parts. Then carefully check NTN bearing oil seal and its surrounding parts, if has presented the adverse symptoms, be sure to replace, and bad seal will result in bearing damage, make the NTN bearing cloud caused by abnormal equipment downtime. Second, we need to check the NTN bearing lubricant. Lubrication is very important, not just for NTN bearing, also for all of the bearing. Note, however, NTN bearing shoulds not be too much grease. Check method is: about NTN bearing lubricant with little lubricant in friction between two fingers, and if the presence of pollutants, can be felt; Or in the back of a thin layer of lubricant, then seal of inspection. Then replace the NTN bearing lubricant. Used engine oil lubrication NTN bearing after xie used engine oil, if possible, shall be impregnated with fresh oil and let the machine in low speed rotation for a few minutes. As far as possible make the oil collecting residual pollutants, and then purging in addition to the oil. Note: the oil before use it's best to filter it. And the use of grease lubrication NTN bearing in replacing grease, Joe used in addition to the device should be avoided with any part of the joint Angle of cotton into the bearing. Because these residues fiber may wedged in between the scroll and damage, especially the application of small bearing more need to pay attention to this problem. Finally, it is important to note covering exposed NTN bearing. Check the NTN bearing, don't let bearing exposure to pollutants or moisture environment. If the job is interrupted, should with oil film, paper or similar material by machine. To determine remove the NTN bearing can be reused, to inspect the dimension precision, rotating accuracy, internal clearance and mating surface, raceway surface, cage and seal rings etc. About the test results that can be used by bearing the judgement or master of bearing. Judgment standard according to the mechanical properties and important degree and inspection cycle. If you have the following injury, shall not be used again, NTN bearing must be replaced. 一) Bearing parts of rupture and defects. b） The raceway surface material on the surface of the rolling strip. NTN bearing will be removed when check, use first method such as photography and then record the appearance. In addition, to confirm the amount of residual lubricant and lubricant sampling, and then clean the bearing. A, NTN bearing cleaning divided into rough washing and fine washing, can be put in use at the bottom of the container and on the metal frame. B, rough washing, oil using a brush to remove grease or adhesive. If at this time in oil bearing, pay attention to the rolling surface due to foreign bodies such as damage. C, fine cleaning, slowly turn the NTN bearing in the oil, must be carefully. Commonly used cleaning agent for neutral aqueous diesel or kerosene, according to the need to sometimes use warm lye, etc. No matter use which kinds of detergent, often should filter clean. After cleaning, immediately on the NTN bearing coating anticorrosive oil or antirust grease.