I would like to ask why a gap of 0.1–0.25 is required between the inner ring of the thrust bearing of a centrifugal pump and the locking washer
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I would like to ask why a gap of 0.1–0.25 is required between the inner ring of the thrust bearing of a centrifugal pump and the locking washer, and how can this be ensured during installation? Is it unnecessary to leave a gap?
Compress one section, and use a feeler gauge to measure the other; just keep it under control. Couplings are all elastic in nature, so a design that allows for a slight amount of axial movement is acceptable
There is no need for that; we install it with a 0 gap.
These include the lubrication clearance and the reserved clearance to prevent structural changes caused by thermal expansion. Implement in accordance with the required criteria.
This post was last edited by Liuyuxufen on 2019-2-1 at 19:11. I believe this indicates that there is no clearance in the outer ring of the bearing; therefore, the bearing clearance needs to be adjusted on the inner ring, with the clearance amount being 0.1–0.25. All DB bearings are adjusted in this manner.
The gap between the bearing cover and the outer ring is used for thermal expansion
Bears with angular contact are used back to back; the inner rings are fitted with caps for tightening, and a gap is left between the bearing cover and the outer ring to allow for thermal expansion.
Upon closer inspection, it seems to be due to unclear markings; what is meant is that there should be a gap in the outer ring, while the inner ring should be pressed tightly without any gaps, right?
Judging from the structure of this pump, is it a high-temperature oil pump? If so, it might be the thermal expansion gap left behind.
Dude, you’ve misunderstood; that’s the bearing cover clearance
The drawing must be incorrect; the inner ring should be pressed tightly, while a clearance for expansion should be left for the outer ring.