Radial runout of reciprocating compressor piston rod
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I’m seeking advice from fellow sailors on how to measure the radial runout of the piston rod in a reciprocating compressor when it’s at room temperature. Specifically, I want to know how to use a dial indicator, where to place it, and what the exact procedure is. Seeking help from fellow travelers, thanks
On the mid-section, near the oil-scraping ring side, a dial indicator can be used
The magnetic base is placed at the position of the intermediate tube near the cylinder body, while the dial indicator should be as close as possible to the side of the cylinder body. The crank is rotated through one full stroke, and the maximum and minimum readings taken by the dial indicator are recorded; the difference between these values represents the amount of play. It is important to measure both the vertical and radial positions. Generally, when the cylinder block is properly aligned, the runout is very small, so it is definitely qualified
Could you be more specific? Is it applied to the piston rod?
Some say it should be installed at the oil scrapper ring, while others say it should be placed near the cylinder block. So where is the correct location? And how does one measure verticality?
Research and Analysis on the Radial Runout of Piston Rods in Reciprocating Compressors - Docin.com http://www.docin.com/p-1300686860.html