The problem of axial tilt of pump shaft alignment
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When making data on the shaft alignment record (SH3503), I found that there is a diaphragm coupling with an intermediate shaft. The standard axial tilt requirement is 1.5mm/m. The rotation diameter of the dial indicator is calculated as the diameter of the half coupling, which is 170mm. Then the allowable value reflected in the dial indicator (up and down opening or left and right opening) is 0.255 (1.5/1000* 170)?
That should be what this person means. But the installation requirements must prevail. For reference.
The basic requirements for our pumps are 0.06 and 0.08mm.
Axial tilt! ! One end of the axial direction is the fulcrum, and the vertical distance of the horizontal axis from the other end to the fulcrum is 1.5mm/m. Then, calculated according to the ratio of the distance between the bearings at both ends of the equipment shaft, the final value is the runout value of the dial indicator! In fact, there is no need to check. Generally speaking, the allowed jump is 0.02mm.
The three bases need to be confirmed by the equipment department. First, contact the manufacturer for consultation and verification ； The second is to find a unit that uses the same equipment. ； The third is to follow the original maintenance parameters. If you don't have any basis, it's best to grab someone to back it up, otherwise it won't be clear if something goes wrong. There are many maintenance matters where the key is to find evidence for reference.
Within 5 wires, too much tolerance affects life and increases vibration.
This is normal. There are vibration standards. If they are too high, they will not be met.
For general machine pumps, there is no problem within 10 wires, but the requirement of 2 wires seems a bit high: lol