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Bearing grease deterioration M D Gafitanu

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M. D. Gafitanu's research works | Gheorghe Asachi .

M. D. Gafitanu's 7 research works with 28 citations and 433 reads, including: Lubrication safety in high‐speed ball‐bearings M. D. Gafitanu's research while affiliated with Gheorghe Asachi ...

CORRELATION BETWEEN GREASE DEGRADATION AND VIBRATION LEVEL .

CORRELATION BETWEEN GREASE DEGRADATION AND VIBRATION LEVEL OF BALL BEARINGS M. D. GAFITANU, G. M. IANUS, F. TARABOANTA Technical University „Gh. Asachi“, Bul. D. Mangeron no. 61-63, 6600, Iasi, ROMANIA, e-mail: [email protected] SUMMARY Grease used to lubricate "for life" ball bearings of machines and industrial equipment, represents an ...

Bearing grease deterioration | M. D. Gafitanu - ResearchGa

About 80% of bearing mountings are grease lubricated. This has many advantages, such as eliminating complicated oil cooling systems, and better organisation of the available space in machine tools ...

Bearing grease deteriorati

About 80% of bearing mountings are grease lubricated. This has many advantages, such as eliminating complicated oil cooling systems, and better organisation of the available space in machine tools and aircraft. However, the bearing service life is reduced by grease deterioration.

Some influence parameters on greases lubricated rolling contacts service li

Some influence parameters on greases lubricated rolling contacts service life Some influence parameters on greases lubricated rolling contacts service life Farcas, F; Gafitanu, M.D 1999-04-01 00:00:00 The present tendencies in miniaturizing the equipment and the machine tools, decreasing the aircraft weight, avoiding the complicated oil cooling and lubricating systems, running the ball or ...

VIBRATION LEVEL OF BALL BEARINGS DETERMINED BY GREASE .

Grease degradation process study using vibration tests represents one of the future possibility to detect greases reserve life. 6 REFERENCES [1] Gafitanu, M.D., Ianus, G., Farcas, Fl., Olaru, D.N.” Grease Reliability in Ball Bearing Applications”, the 11th International Coll. Tribology, 1998, Esslingen

Analytical Profiles of Drug Substances and Excipients .

Analytical Profiles of Drug Substances and Excipients EDITORIAL BOARD Abdullah A. Al-Badr Lee T. Grady Gerald S. Brenner Larry D. Kissinger Glenn A. Brewer

Molybdenum Disulphide Lubrication (Tribology and Interface .

M J D e ~ i n edemonstrated ’~~ a general relationship between the wear life of a molybdenum disulphide film and the chemical composition of a metal substrate. He carried out a detailed study using eighteen different substrate metals with a bonded film consisting of 71% molybdenum disulphide, 7% graphite, and 22% of sodium silicate as the binder.

BEARINGS GREASES SERVICE LIFE IN HIGH LOADING AND SEVERE .

BEARINGS GREASES SERVICE LIFE IN HIGH LOADING AND SEVERE ENVIRONMENT CONDITIONS M. GAFITANU, G.IANUS, and M. TIRON “Gh. Asachi” Technical University of Iasi, 61-63 Mangeron Blvd., 6600 Iasi, ROMANIA; e-mail: [email protected]

Selecting grease or oil - skf.c

Relubrication should occur frequently enough to avoid grease deterioration having an adverse effect on the bearing life. ... d m = bearing mean diameter [mm] = 0,5 (d + D) ... excess grease in the bearing distributes or escapes. At the end of the running-in period, the operating temperature drops, indicating that the grease has been distributed.

Analytical Profiles of Drug Substances and Excipients .

Analytical Profiles of Drug Substances and Excipients EDITORIAL BOARD Abdullah A. Al-Badr Lee T. Grady Gerald S. Brenner Larry D. Kissinger Glenn A. Brewer

Some influence parameters on greases lubricated rolling .

The present tendencies in miniaturizing the equipment and the machine tools, decreasing the aircraft weight, avoiding the complicated oil cooling and lubricating systems, running the ball or roller bearings in contaminated media or in the presence of the electric fields, determined a higher use of the lubricating greases in technical applications which is estimated at about 80% of the bearings ...

A Review Paper on Failure Analysis of Cylindrical Roller .

Farcas and Gafitanu (1999), carried out an experimental work to study the behaviour of two different greases in context with the wear of bearing. They analyzed the microstructure of greases and find that the lubricant film thickness decreases with the deterioration in grease fibroid structure.[2]

A n Institutul de Chimie Macromoleculară

“Electrical Properties Functioning Temperature Correlations For Rolling Bearing Greases Under The Influence Of The Electric Fields ... 10 M. C. Tiron, M.D. Gafitanu, F ...

Molybdenum Disulphide Lubrication (Tribology and Interface .

MOLYBDENUM DlSULPHI DE LU BR 1CAT10 N TRIBOLOGY SERIES Editor D. Dowson (Gt. Britain) Advisory Board W.J. Bartz (Germ...

Starvation in ball bearings - ScienceDire

Wear, 170 (1993) 219-234 219 Starvation in ball bearings D.N. Olaru and M.D. Gafitanu Department of Machine Design and Tribology, lasi Polytechnic Institute, 6600 lasi (Romania) (Received March 18, 1993; accepted July 15, 1993) Abstract A complex analytical model for the starvation mechanism in ball-race contacts, in correlation with thermal effects, has been developed.

www.doctorat.tuiasi.

Elaboration of the new analytical model to estimate of the grease deterioration in the ball bearing applications; Analytical and experimental researches in order to optimize the geometry and lubncation of the high- ... D.N.Olaru and M.D.Gafitanu: Starvation in Ball Bearings, WEAR, 170

Steels for bearings - phase-trans.msm.cam.ac.

Lean Steels: Microstructure. Steels with carbon concentrations in the range 0.8-1.1 wt% and the total substitutional solute content less than 3 wt%, designed originally for machining tools, have historically dominated the mass market for bearings [ s10, 9].They can be made martensitic by quenching in oil or salt, from a temperature where the material is mostly austenite; the 1which also ...

Bearing grease deterioration - Gafitanu - 2001 .

Bearing grease deterioration. M. D. Gafitanu. Department of Machine Design & Vibrations, Technical University ‘Gh. Asachi’ of lasi, Romania. Search for more papers by this author. F. Farcas. Department of Machine Design & Vibrations, Technical University ‘Gh. Asachi’ of lasi, Romania

ELECTRICAL PROPERTIES-FUNCTIONING TEMPERATURE CORRELATIONS .

ELECTRICAL PROPERTIES-FUNCTIONING TEMPERATURE CORRELATIONS FOR ROLLING BEARINGS GREASES UNDER THE INFLUENCE OF THE ELECTRIC FIELDS Mihai Tiron, “Gh. Asachi”Technical University of Iasi, Romania Mihai Gafitanu, “Gh. Asachi”Technical University of Iasi, Romania ... rolling bearing ball Bearings deterioration is strongly dependant on ...