Failure modes and life prediction model for high-speed bearings in a through-flow universal motor

Benedik, Blaž (author), Rihtaršič, Janez (author), Povh, Janez (author), Tavčar, Jože (author)

The focus of this study was the empirical modelling of the high-speed bearings life and failure modes of a through-flow universal motor. An approach was used facilitating predictions of the life through-range of various conditions. The model estimates bearing life for the survival probability of 50% – L50. It influences parameters such as bearing temperature, speed factor, equivalent load, grease fill amount, type of oil, type of bearing cage, type of seals, tolerance class, and side of the motor, all of which are considered in the model. Initial empirical data consisted of 4672 test populations, involving 38,021 vacuum cleaner motors. Strict filtering requirements of all the available test data resulted in 170 final populations, consisting of 1385 tested and 638 failed bearings, which were used for building a Weibull database and for developing the models. The paper’s key contributions are the empirical models gained with multiple linear regression and the obtained database of tested bearings.

• Language: English
• Keywords: bearing life forecasting, bearing failure modes, through-flow universal motor, vacuum cleaner motor, grease deterioration, Weibull probability function, censored data, linear regression
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 17 str.
• Numbering: Vol. 128, art. 105535
• PID: 20.500.12556/RUL-133020
• UDC: 621.822:621.313.14
• ISSN on article: 1350-6307
• DOI: 10.1016/j.engfailanal.2021.105535
• COBISS.SI-ID: 68629507
• Publication date in RUL: 08.11.2021

Record is a part of a journal

• Title: Engineering failure analysis
• Shortened title: Eng fail. anal.
• Publisher: Elsevier
• ISSN: 1350-6307
• COBISS.SI-ID: 15354117

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: napovedovanje življenjske dobe ležajev, načini okvare ležaja, univerzalni motor s pretokom, motor sesalnika, poslabšanje maziva, Weibullova verjetnostna funkcija, očiščeni podatki, linearna regresija

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0256
• Name: Konstruiranje