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Consequential damages of failed lubrication 2017-11-07T08:26:19+00:00

Project Description

Consequential damages of failed lubrication

The PROGNOST® monitoring system has successfully detected irregularities during the supply of lubricants in the area of the crosshead. Based on two case studies, the following texts illustrate the necessity of appropriate monitoring.

The operation mode of a reciprocating compressor requires the continuous supply of lubrication. This is due to the multitude of moving parts that are required to convert the rotating movement (originating from the crankshaft) into an oscillating movement (piston stroke). This movement is implemented by the crosshead. This component moves between two contact surfaces and is continually subject to high forces (compression and tension), as well as friction. At the centre of the crosshead, a ‘crosshead pin’ connects the crosshead to the piston, onto which, facing the side of the cylinder, the piston rod is bolted. The crosshead pin is an extremely critical component that must be supplied continuously with sufficient lubrication. In order to provide a continuous lubrication of the pin, in most cases, a power reversal (change from compression to tension force) must take place. Only this can ensure a sufficient distribution of lubricant.

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