FAG high-speed precision bearing installation changes

When rolling bearing manufacturing as stipulated in the contract is clearance, the clearance generally referred to as the original clearance; And when the FAG bearing installed on the host, due to a certain ring interference fitted, lead to bearing clearance value decreases, and the formed after installation clearance is called installation clearance; After operation, the temperature rise of bearing parts, the volume change, and matching with the bearing axis or shell, and the rise of temperature elongation phenomenon, resulting in bearing clearance changes again, do the work of the clearance was called work clearance. Work clearance generally is less than the installation clearance, sometimes the clearance value will also increase with equipping, the different methods of installation. First, the structure design and advanced at the same time, there will be a longer FAG bearing life. Bearing manufacturing through forging, heat treatment, cutting, grinding and assembly process operation. The rationality of the processing, advanced, stability will also affect the service life of bearing. Affect the bearing heat treatment and grinding process, often associated with bearing fault more direct relationship with the quality of the product. In recent years, the deterioration of the surface layer of the bearing show that the grinding process is closely related to the bearing surface quality. FAG bearing material metallurgy is the main factor influencing the quality of early failure of rolling bearings. With the progress of metallurgical technology ( Such as bearing steel, vacuum degassing, etc. ) , improve the quality of the raw materials. The proportion of raw materials quality factors in the analysis of the bearing is markedly reduced, but it is still one of the main factors of bearing failure. Choose proper is still bearing failure analysis must be considered. FAG bearing failure analysis based on a lot of background material, is the main task of the data and failure mode analysis, find out the main factors of bearing failure, in order to make targeted improvements to prolong bearing's service period, in order to avoid premature failure of the bearing of the emergency. High-speed precision bearing, mainly used in the high-speed rotating situation of load lighter, bearings and high precision, high speed, low temperature rise, low vibration and service life. Often for high speed motorized spindle bearing parts installed in pairs, is the key to the high-speed motorized spindle surface grinding machine fittings. High speed precision bearings service life had a lot to do with the installation, should pay attention to the following: 1. Bearing installation should be clean, clean the room, the bearing should be carefully selected, bearing with baffle passes through grinding, and in keeping the baffle on inner and outer contour under the premise of baffle parallelism should be controlled below 1 um. 2. Bearing should be cleaned before installed and when cleaning inner ring ramp up, flexible hand induction, no stagnation, air-dried, into the specified amount oil, if oil mist lubricating oil should be in a small amount of oil mist; 3. Bearing installation should use specialized tools, force uniform, do not knock; 4. FAG bearing deposit should be clean and ventilated, non-corrosive gas, relative humidity is not more than 65%, long-term storage should be rust on a regular basis.