INFLUENCE OF THE TYPE OF FILLER IN GREASE– –THICKENER COMPOSITION ON LUBRICATION EFFICIENCY
Journal Title: Tribologia - Year 2011, Vol 239, Issue 5
Abstract
These investigations concern the influence of the type of filler in grease modified with solid oils on lubrication efficiency in steel sliding nodes working in mixed lubrication. Based on preliminary works, two commercial greases were used for analysis: car-grease 1S with lithium thickener and grease Maszynowy with calcium thickener. Investigated compositions were obtained by the addition 4% by weight of analysed filler (solid oil, i.e. disulfide of molybdenum, PTFE, graphite and cuprum) to grease. The tests were carried out in agreement with the prescriptions of the Polish standard PN-76/C-04147 “The tests of properties of oils and greases.” To assessment of lubrication efficiency of the tested compositions three criteria were used (wear characteristic as the function of load d = f(F), seizure load Fz, limit wear load index Goz). Investigations were carried out using a four–ball extreme pressure tester. The results were statistically handled at a confidence level of 95% using Student’s t-test. Results are presented on graphs. Proper conclusions are given.
Authors and Affiliations
Stanisław F. Krawiec, Michał Krawiec, Tadeusz Leśniewski
Keywords
Related Articles
- EP ID EP271001
- DOI -
- Views 37
- Downloads 0
CHARACTERIZATION OF NANO-GROOVED SUPERFICIAL LAYER OF COMPUTER MICROBEARINGS
This paper presents the measurement of superficial layer properties for a new undamaged journal and sleeve microbearing surfaces occurring in computer ventilator Kama Flow SP0825FDB12H 80 mm, in computer ventilator Xilen...
Wpływ warstw cynkowych na opory wiercenia
W pracy pokazano sposób ,,smarowania” wierteł powłoką cynkową osadzaną metodą elektrolityczną. W warunkach wiercenia pomiędzy narzędziem i wierconym przedmiotem występuje elektronowe przeniesienie ładunków elektrycznych....
Wielomasowy dyskretny model tribometru do symulacyjnych badań dynamicznych charakterystyk tarcia
W artykule przedstawiono metodykę opracowaną w celu redukcji modelu fizycznego tribometru z ciągłym rozkładem masy (bezwładności), sztywności podparcia oraz tłumienia do modelu dyskretnego. W modelu dyskretnym zastosowan...
Klasyfikowanie jakości samochodowych olejów przekładniowych metodą szokowego zacierania testowej przekładni zębatej
PRESSURE AND VELOCITY DISTRIBUTION IN A SLIDE JOURNAL BEARING GAP BY LAMINAR UNSTEADY LUBRICATION
This paper shows the results of numerical solutions of modified Reynolds equations for laminar unsteady oil flow in the slide journal-bearing gap. Laminar unsteady oil flow is performed during periodic and non-periodic p...