The eccentric bearing installation shall follow the principle of

Overall eccentric bearing service life started in the right bearing selection. From the beginning, bearing designers by choosing the right bearing for different application to prolong the service life of the bearing and equipment performance. This process should consider many factors, such as load, hardness, bearing life prediction, running environment, etc. In principle, all whole eccentric bearing before installation should be stored in their original packaging. They need to stay clean, no moisture, relatively constant temperature environment. Rolling bearing should stay away from dust, water and corrosive chemicals. Shaking and vibration may be forever on the mechanical properties of the damaged bearing, so the vibrations must be avoided in the process of handling and storage. Basically, all bearing must be level to save, because some of the heavier bearing long upright, may be due to its own weight and deformation. In advance (coated with grease Or sealed) The eccentric bearing need to be especially careful, because the grease will change after long time of storage density. So when the bearing is used for the first time, there will be a certain degree of rotation noise. Therefore, this kind of bearing on time should be controlled according to the principle of first in first out. ( 1) Problems put forward in the gas turbine and some machine and engineering machinery, high speed and large axial load, using the service life of the ball bearing is too short, use short cylindrical roller bearing axial load capacity is insufficient, the axial clearance is difficult to adjust, hope to use the whole eccentric bearing break through this difficult problem. ( 2) Must solve the key technology of improving the overall technology of eccentric bearing high speed limit is the key to improve the inner ring guard and lubrication condition between the roller large end face, this area the most easily when high-speed developing severe wear and burns, is the main reason for the high speed limit its. ( 3) Solution in the general structure of the whole eccentric bearing, lubricating oil circulation route of big guard ring and roller large end face contact parts are hard to come by lubricating oil, explained and the relative sliding, precisely and lubricating oil are needed most. Therefore, Japan and other countries have developed integral HA eccentric bearing, the bearing guard in the outer ring, so that the circulation of lubricating oil can lubrication outer rim roller and the big end surface contact area, even at rest here at the same time also can save some oil, to avoid the inferior burns accident when starting, but the outer rim according to need to open a few of drainage holes, no discharge channel, to avoid oil retention in some oil mixing power loss and temperature rise too high. As there is no guard inner ring, the temperature decreases, and thus reduce the matching surface between inner ring and the shaft between the possibility of peristalsis. The structure of the bearing outer ring guided mode to the cage, the cage can be smoothly guide roller is not skewed to normal operation, to avoid vibration and excessive wear, this also is helpful for high speed. ( 4) Can achieve the effect of the HA type bearing DMN value of up to 2 million, twice higher than that of ordinary structure, such as main shaft of the bearing used in gas turbine reducer ( Model for the I - IA30205） , under the condition of the axial load of 1000 n, ensure that there is 2 l/min to implements cycle for bearing oil supply 4 turbine oil, the working speed of up to 60000 to not burn.