A novel view on lubricant flow undergoing cavitation in sintered journal bearings

Scheichl, Bernhard; Neacşu, Ioana Adina; Kluwick, A.

doi:10.1016/j.triboint.2015.02.014

Cited by 18 publications

(5 citation statements)

References 30 publications

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“…In accordance with theory presented in [16] taking into account porosity and numerical investigations [6][7][8][9][10], in the case of low radial loading F r the shaft is in contact with the bearing surface at low speed to lift off at some specific 125 speed. This was identified by the simultaneous friction torque measurement to occur at (or in some cases slightly before) the speed of minimum friction.…”

Section: Calibration By Geometry Identificationsupporting

confidence: 74%

Friction and 2D position measurements in small journal bearings

Trachsel

Pittini

Dual

2016

Tribology International

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Section: Calibration By Geometry Identificationsupporting

confidence: 74%

Friction and 2D position measurements in small journal bearings

Trachsel

Pittini

Dual

2016

Tribology International

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“…In bearing, the mineral oils are applied to keep it cool during working and it also flushes away debris or contaminant particles with it from the bearing [1]. That's why the journal bearings operated with high-speed are always being mineral oil lubricated rather than lubricated by grease [11][12][13][14][15][16][17][18][19]. The grade of oil used as a lubricant and the change in load into the assembly of the bearing make a significant effect on the temperature and pressure of lubricating oil film.…”

Section: Mineral Oilsmentioning

confidence: 99%

Selection of Suitable Lubricant for Sliding Contact Bearing and the Effect of Different Lubricants on Bearing Performance: A Review and Recommendations

2020

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The word bearing implies to an element of the machine which allows one moving or vibrating part to support other rubbing surfaces by which the load can transmit. Depending upon in nature and application of load, an extensive variety of different bearing is available. They can generally be categorized into two kinds of bearing such as rolling element bearing and a sliding bearing. Lubrication is required in the middle of rubbing surfaces, which enacts as a medium between the moving surfaces to diminish friction and to take away heat for survival during the transmission of the load. In this paper, a literature review has been made on the influence of different lubricants on the performance of various bearing. The selection of an appropriate lubricant is a very critical decision to take for the efficient performance of a bearing because each lubricant has its own merits and demerits on various kinds of bearing. In the later portion of this paper, a selection process of right lubricant in sliding contact bearing is analyzed mathematically. This critical decision is being made by using PROMETHEE method (broadly Preference Ranking Organization Method for Enrichment Evaluations) hybridized by Entropy Weight Measurement method and Fuzzy scale. As per the ranking of Entropy-PROMETHEE method, the best suited lubricant for sliding contact bearing is SAE20W40.

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“…Beside their self-lubricating properties, PJBs are also maintenance-free throughout their entire lifespan of up to 10,000 operating hours (Durak, 2003; Veloff et al , 2006). These benefits are the reasons why several topics related to PJBs have been studied and discussed in scientific publications not only in the academic community, but also by industry (Scheichl et al , 2015; Baidya et al , 2019; Boubendir et al , 2011; Sakim et al , 2019; Boubendir et al , 2019). Commonly examined areas of interest include the investigation and improvement of PJB performance or the development of methods and tribometers to characterize them (Eder et al , 2018; Allmaier et al , 2013; Saraf and Kothavale, 2018).…”

Section: Introductionmentioning

confidence: 99%

A tribometer and methodology for wear and friction testing of porous journal bearings at elevated temperatures

Ielchici

Krenn

Eder

2020

ILT

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Purpose This paper aims on a methodology to overcome the fact that conventional service life testing of porous journal bearings (PJBs) requires long test times and is not economical. Design/methodology/approach This paper sketches out a pathway to strongly accelerated life tests for PJBs enabled by high load and elevated temperature, which saves months or even years of testing. The testing time is not only reduced to a few weeks, but the results are also statistically secured via a multiple test rig construction of a custom-made tribometer. Findings An exemplary bearing-lubricant combination is tested in the mixed lubrication regime, where the coefficient of friction is monitored during the test. Originality/value A Weibull curve is fitted to the experimental results to show the survival probability of the combination over time. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0351/

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A novel view on lubricant flow undergoing cavitation in sintered journal bearings

Cited by 18 publications

References 30 publications

Friction and 2D position measurements in small journal bearings

Friction and 2D position measurements in small journal bearings

Selection of Suitable Lubricant for Sliding Contact Bearing and the Effect of Different Lubricants on Bearing Performance: A Review and Recommendations

A tribometer and methodology for wear and friction testing of porous journal bearings at elevated temperatures

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