A common problem of imported FAG bearing installation

A, the device looks and device applications require? B: yes. If there is scrap iron bearing, burr, dust and other foreign matter to enter, will make the imported FAG bearing in the operation noise and vibration, and even damage raceway and rolling body. So, in front of the gear bearing, you must ensure that clean device looks and device. Second, FAG import bearing assembly must be clean before? Bearing surface coated with anti-rust oil, you must use the clean gasoline or oil carefully cleaned and then coated with high quality high temperature or high speed smooth clean grease before device use. Cleanliness of bearing life and the influence of the length of the vibration noise often large. But we need to special prompt you: full sealed bearing not clean fuel. Three, how to choose smooth fat? Smooth running and life of the bearings have a major impact, here briefly introduced to you choose smooth fat general principles. Smooth fat made from root oil, thickener and additive, the conflict and unity breeds with trademark fat smooth function vary widely, promised to reverse limit divergence, when the choice must pay attention to. Smooth function of fat first by root oil resolution, the warp and woof of ordinary low viscosity oil used in low temperature, high speed, high viscosity and used in high temperature, high load. Thickener also relationship with smooth function, smooth thickening agent water resistance resolution fat water resistance. Criterion, smooth fat means less inclusions, brand of differences and even the same smooth fat of thickening agent, will also bring bad influence for additive differences each other. Four, when the smooth bearing, oil paint, the more the better? Smooth bearing, oil paint, the more the better, this is a concept often see mistakes. Bearing and bearing indoor excessive grease will form the excessive grease stirring, and high temperature. Bearing the number of smooth filling agent for bearing internal space filled with 1/2 ~ 1/3 advisable, when high speed should be cut to a third. Five, intended device and open it? Device not hammer directly import bearing FAG end face and the bearing surface, should be to press, sleeve or other device ( Tooling) Make the bearing force on average, do not pass rolling body power plant. If the device smooth appearance coated with oil, will make the device more smoothly. Such as mutual interference is bigger, should put the bearing into the mineral oil in device as soon as possible after heating to 80 ~ 90 ℃, strict control the oil temperature does not exceed 100 ℃, to avoid the effect of tempering hardness decrease and recovery effect size. When open it hit hard, you are advised to use open east-west pulling out to careful labor the inner ring of hot oil, heat can make the bearing inner ring expansion, and then make it easier is shattered. Six, FAG import bearing radial clearance as small as possible? Not all require the smallest bearing clearance mission, you must based on the premise to choose appropriate clearance. National standard 4604 - In 93, the rolling bearing radial clearance is divided into five groups 2, 0, 3, 4, 5, clearance values in order from small to large, Chinese standard clearance for 0 group. Basic radial clearance combination for ordinary operation premise, practice temperature and the common interference joint; Under high temperature, high speed, low noise, low friction, especially on the premise of the task of bearing appropriate chooses big radial clearance; On fine spindle, spindle with FAG bearing imports, appropriate chooses the smaller radial clearance; On roller bearings can insist on a few tasks clearance. Other, about separation type of bearing is not clearance; In the end, the bearing capacity after the task of clearance, than the original clearance before the device is small, because want to accept the inevitable bearing load, and the elastic deformation of bearing and common load. Dynamic operation, from the beginning of the no-load speed, slowly up to the rated operating conditions. Test run to check the items, whether there is abnormal sound, FAG import bearing temperature, lubricant leakage or discoloration, and so on. If discovery is unusual, should immediately stop, check machine, when it is necessary to remove the bearing inspection. FAG import bearing temperature, average according to the external temperature of the bearing. But using the oil hole directly measuring the temperature of the bearing outer ring more accurate. The bearing temperature, starting operation gradually increases, usually 1 ~ 2 hours after the temperature stability. If the bearing installation, the temperature will rise sharply, abnormal high temperature. The reason such as lubricant, bearing clearance is too small, too much bad installation, excessive friction sealing device, etc. FAG import bearing examination such as the rotation of the sound with a stethoscope, a strong metal noise, such as vision, irregular note that exception. Its reason has poor lubrication, shaft or precision bearing, bearing damage, foreign body intrusion, etc.