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The size of the clearance work will directly affect their work performance and service life, the work clearance by centrifugal force, the creators of information and users in accordance with the system of radial gap to manufacture and selection of angular contact ball bearings. Clearance bearing is not when the operation state of the out-of-work clearance. Appropriate clearance will help progress closed system research, there is no contact relationship to consider a variety of factors, the calculated results and the actual deviation, the fact bearing operation temperature field as a non-average, and three are interrelated.
General, if accurate bearings can be used to achieve the fatigue life. But there will be unexpected and premature damage, intolerance on the situation. This early damage, the fatigue life is known as the quality of the use of the limits of the failure or accident. Multi resulting from the installation, use, do not pay attention to the lubrication from outside intrusion of foreign matter, insufficient axis, shell heat affected.
Bearing work, the impact factor for clearance lot of the main angular contact ball bearings temperature changes, the centrifugal force and the co-ordination. In the course of their work, because of the centrifugal force, with the effect of temperature, so that it work clearance changes, sometimes with the effect of the three factors is not isolated from each other, but are linked. Therefore, in order to accurately reflect the the three bearing clearance actual work, to determine the bearing clearance in order to be fair, in order to improve the the bearing operating efficiency and running accuracy.
State of bearing damage, such as: roller bearing ferrule ribs card wound, can be considered as the reason, the lubricant is insufficient, is not suitable for the defects of the oil drain configuration, intrusion of foreign matter, the bearing mounting error, the axis of the torsion The song too large, there will be these reasons overlap.
Degrees of stiffness of the bearing housing with the different axes of the holes to adjust the bearing seat must have sufficient rigidity, and a bearing hole in the unified axis is required to maintain a strict different axes. In addition, the diameter do, the avoidance move the body movement wedged overload. By the positioning device positioning, installation the bearings should check the snap ring is good rely on, the shaft shoulder is flat and smooth surface without impurities dirt through the test run to find positive, the bearing cap fastening bolt tightening process, roll angular contact ball bearings to scroll to find their own positive fastening bolts screwed firmly delineated torque. Tighten the shaft Order of the cover, and continue the roll axis, the bearings should be self-alignment. If the bearing is rotating light and flexible without jamming, the alignment can average 2 to 3 times the delineation of torque screw tight bearing cap bolts. Drive shaft intermediate support bearing predicament adjusted.
Therefore, only investigated the damage is difficult to know the real cause of injury. However, if you know the use of mechanical angular contact ball bearings, the premise, the construction of the bearing near to understand the situation before and after the accident, combined with a visit bearing damage state and for several reasons, they can prevent similar incidents from happening again.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7240BDB NSK | 200 | 360 | 58 |
| 7240ADB NSK | 200 | 360 | 58 |