Overall eccentric bearing life begins to correct bearing selection. From the outset, the bearing designer to select the correct bearing for different applications to extend bearing life and equipment performance. This process many factors to consider, such as the load, the hardness, the bearing life prediction, operating environment, and so on.
In principle, the overall eccentric bearing before installation should be preserved in their original packaging. They need to stay in a clean, free of moisture, a relatively constant temperature environment. Rolling bearings should be kept free of dust, water and corrosive chemicals. Shaking and vibration may forever destroy the mechanical properties of the bearing vibration must be avoided in the process of handling and storage.

Basically, all the bearings must be level to save, because the vertical placement of some heavier bearing long time, the deformation may be due to its own weight.

Pre-coated with grease (or sealed) overall eccentric bearings need to be especially careful, because the grease will change after prolonged storage density. So that when the bearing for the first time use, there will be a certain degree of rotation noise. Therefore, such a bearing shelving control should be based on the first-in, first-out principle.

(1) the issues raised in the gas turbine and some machine tools and construction machinery, high speed and axial load, ball bearing service life is too short, short cylindrical roller bearings, axial load capacity axial clearance difficult to adjust the overall eccentric bearing breakthrough this problem.

(2) Technical key must be solved to improve the overall eccentric bearing high-speed limit lies improved Comfort large rib and roller lubrication state between the large end at high speed, the parts most prone to excessive wear and burn, is to limit its the speed of the main reasons.

(3) Ordinary overall eccentric bearing structure solution, the oil circulation routes in the inner ring large rib and roller end contact area difficult to get lubricating oil, and this part of the relative sliding, precisely the most in need of lubricants . Therefore, Japan and other countries to develop a the HA type overall eccentric bearing, this bearing wall in the outer ring, so the flow of lubricating oil will be able to lubricate the outer ring ribs and roller end face contact area, and at the same time here even when at rest can store oil, to avoid the the start lean burn accident, but need to open several drain hole on the outer ring ribs to avoid oil-free discharge channel, the retention of certain parts causing power loss and temperature rise of oil mixing too high. No inner wall, the temperature is reduced, thus reducing the possibility of between the inner ring and the shaft, with the surface between the peristaltic. This structure bearing outer ring guided by the cage, the cage can smoothly guide roller will not skew normal operation to avoid vibration and excessive wear, which will also help the high-speed.



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