PT  - JOURNAL ARTICLE
AU  - Fabiánek, David
AU  - Legát, Václav
AU  - Aleš, Zdeněk
TI  - Weibull's analysis of the dependability of critical components of selected agricutural machinery
DP  - 2021 Nov 25
TA  - Manufacturing Technology Journal
PG  - 605--615
VI  - 21
IP  - 5
AID - 10.21062/mft.2021.076
IS  - 12132489
AB  - The aim of this paper is an analysis of the dependability of critical components of the John Deer 7530 tractor. For this analysis data was used from a database which contains maintenance data of 166 trac-tors during approx 9 years. The first part of this article is devoted to the selection of critical compo-nents based on number of failures of individual machine parts for a given period and their sales pric-es. The next part of article presents data for calculation dependability indicators which contains oper-ating times to failure and operating times without failure. Due to the large size of the data files of the individual components, the data are only given for one machine component. Furthermore, the meth-od of calculation of dependability indicators is described by parametric statistical methods according to ČSN EN 61649:2009 and mean time to operating failure. The results of the analysis are summa-rized in tables and graphs. The method in this article can be used to optimise the maintenance pro-gram.