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Machines 2014, 2(1), 1-12; doi:10.3390/machines2010001

Predictive Maintenance of Hydraulic Lifts through Lubricating Oil Analysis

Hellenic Naval Academy, Fuels & Lubricants Technology Laboratory/End of Hatzikiriakou Avenue, Piraeus 18539, Greece
Received: 4 November 2013 / Revised: 20 December 2013 / Accepted: 24 December 2013 / Published: 27 December 2013
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Abstract

This article examines the possibility of measuring lift maintenance through analysis of used hydraulic oil. Hydraulic oils have proved to be a reliable indicator for the maintenance performed on elevators. It has also been proved that the end users or the maintenance personnel do not always conform to the instructions of the elevators’ hydraulic machine manufacturer. Furthermore, by examining the proportion of the metals, an estimation of the corrosion and the wear resistance of the joined moving parts can be observed. Additionally, the presence of chlorine and calcium in hydraulic oils demonstrates their function in a highly corrosive environment.
Keywords: hydraulic oil; elevator; lift engine; metals; viscosity; total acid number hydraulic oil; elevator; lift engine; metals; viscosity; total acid number
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kalligeros, S.S. Predictive Maintenance of Hydraulic Lifts through Lubricating Oil Analysis. Machines 2014, 2, 1-12.

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