Everyday do bearing maintenance needs to pay attention to details

A, touch the high temperature NTN bearing has often said in the abnormal situation. High temperature and harmful to the lubrication oil in the bearing. Sometimes, can be attributed to the bearing lubricant, bearing overheating and long running under the bearing more than 125 ℃ temperature, reduce the service life of the bearings, the cause of high temperature bearing include: inadequate or excessive lubricating oil, lubricating oil containing impurities, heavy load, bearing damage, the lack of space, and the oil seal to produce high temperature friction and so on. Therefore, continuous monitoring bearing temperature is necessary, whether measured bearing itself or other important parts. If it is no change in operating conditions, any temperature change may be down. Bearing temperature measurement can often help thermometer can accurately measure the temperature of the bearing, and according to the degree. Important, NTN bearing is when it is damaged, will cause equipment downtime, so this type of bearings shall be provided with best temperature probe. Under normal circumstances, after bearing lubrication, and lubrication of natural temperature rise and continue a day or two. Two, if you have a good lubrication and bearing the right barrier of debris and moisture, said seal should not wear, however, had better be in open bearing box, by visual inspection and regular inspection bearing oil seal, bearing oil seal conditions around the inspection, to ensure that they are not sufficient to prevent liquid or corrosive liquid or gas from entering the bearing along the axis. Protection ring and labyrinth seal grease should be applied to protect its maximum protection. If oil seal wear should be replaced as soon as possible. In addition to prevent the magazine to the NTN bearing oil seal function, another function is to keep the lubrication bearing box. If oil seal leakage immediately check oil seal has been wear and tear or pine. Leakage phenomenon can also be caused by the bearing box joint looseness or due to the formation of lubricating oil to add too much mixed and leak detection, automatic lubrication system to ensure that the correct amount of lubricant, and review whether color or black, if there is such a phenomenon, usually lubricant containing magazine said. Three, listen to use auditory identification of irregular operation is very common. For example, with the aid of electronic stethoscope to listen to part of the abnormal noise is by experienced operation method. If it is in good working condition of bearings will lead to low hum the sound. If a sharp hiss, squeak and other irregular sound, commonly referred to as the bearing of the poor working conditions. Shrill creaking sound may be caused by improper lubrication. NTN bearing clearance may also be caused by the improper metallic sound. Bearing outer ring grooves on the tracks will produce vibration, smooth and clear voice. If the installation of the percussion scar will produce noise, noise will be along with the speed of the bearing. If there are intermittent noise, rolling element will be damaged. This sound is occurred on the surface of the rolling bearing date, if the contaminants are often caused by the hiss. Severe damage to the bearings will be irregular and noise. Bearing damage is to listen to consciousness, but usually has arrived bearing must be replaced at this time. Therefore, a better way, for example, using techniques such as electronic monitoring equipment, diagnosis of bearing running condition. 1: floating bearing is lubricated by grease, running 1500 hours, should be timely replacement of lubricating grease, it is important to note the amount of oil filling need right amount, because too little or too much grease will cause bearing heating, amount to gen yu advice at 1/2 ~ 2/3 of the bearing chamber volume is advisable. 2: using sodium base grease of motor bearing ( Mostly this type) , this ability is the feature of high temperature grease ( 125℃) , defect is easy to dissolve in water, so the water pump bearing lubrication is totally inappropriate. 3: used for containers of lubricating oil or grease to clean, at ordinary times should be sealed well, don't let the dust, iron and other sundry fall in it, so as to avoid damage to the bearings. 4: need to pay special attention to the point that the new pump put into use, the first time in 100 hours after operation should be timely replacement grease ( Oil) Replace 1 time, then run 500 hours. 5: for NTN bearing is lubricated by lubricating oil, the oil should be added to the specified location.