Learn how to roller sealing performance is maintained
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| Time：2016.09.26 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Roller bearing at the time of installation to be carried out with attention and idlers, but also in high-temperature, high-speed, when ye meet certain requirements. Therefore, in consideration of their mating time to consider the following points:
1. When the room temperature rises to a high temperature when change its size and hardness changes how.
2. at high speed and the change in shape due to changes in centrifugal force caused by a series of mechanics.
All in all, at high speed and high temperature conditions, in cooperation with the roller should strive to maintain the accuracy and performance stamping bearing, and this indeed is a certain difficulty. Therefore, in order to ensure that the bearing press after installation raceway deformation to be small, not too much interference interference fit to be controlled, and the thermal expansion at high temperature and high speed centrifugal force caused by it can also be offset back pressure surface. If the bearing press fitting surface is loose, then the interference must be carefully calculated in the context of the above two cases are considered, and for effective interference at room temperature and normal speed for punching bearing that can Invalid.
Roller sealing performance, the use of the entire environment, very important. Roller good seal lines that can effectively prevent cinders, sludge on roller erosion, maintain the life of idlers. Following is a brief look at how to roller sealing performance is maintained: 1 roller before the normal start, the need for static tests, end-face inspection multistage pump mechanical seal, the seal ring and the sealing effect of the sealing end cap, if any problem solved one by one check. Temperature and pressure roller 2 and then carrying out the operation, observe advanced multi-stage pump seal area is normal, there is no leakage. If minor leakage, you can run together for some time, so that the end face fit more evenly, to gradually reduce the amount of leakage to normal. Such as 1-3 hours operation, reducing leakage still, we need to stop checking. 3 roller should be cleaned before the start line materials to prevent rust and impurities into the sealed chamber. The first four roller multi-stage pump starts should remain sealed cavity filled with liquid or the seal of the media, if a separate sealing system should start, the cooling water system shall put into circulation.
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