Standards for crankshaft wear amount
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For reciprocating compressors and reciprocating pumps, what is the maximum wear amount of the crankshaft? What is the clearance between its shaft and bearing bush? What criteria are used for determination?
It’s bearing wear; the crankshaft is intact
What you’re saying is incorrect; the crankshaft does experience wear, though it happens slowly. If the wear on the crankshaft is severe, it’s necessary to use thicker bearings, and the clearance should still be set according to the standards specified in the manual
Without corresponding experience, calculations are made based on the shaft diameter and rotational speed.
According to the 56-page section in \"FAQs on Reciprocating Compressors\" published by Sinopec Press, repair is necessary when the crankshaft wear reaches more than 0.1% of the original journal diameter. But it doesn’t say how to repair it specifically, and I don’t know either.
Go to a professional manufacturer for surface iron plating
The crankshaft must not wear out; if wear does occur during operation, there are two solutions: either repair the crankshaft to its standard dimensions, or remove the worn parts and then grind them precisely on a grinding machine, using custom-made bearings. So what is the maximum amount of wear? Due to the limitations imposed by the bearing clearance, it generally isn’t very large.