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Bearing grease deterioration M D Gafitanu

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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.

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

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

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.

CORRELATION BETWEEN GREASE DEGRADATION AND ... - Oe

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 ...

Study on the Test Method for High Temperature and Heavy .

Temperature, load and rotate speed are the main factors which influence grease bearing life are presented by means of study on failure mechanism of grease. According to the test demands of high temperature and heavy loaded grease bearing life, test temperature, load and rotate speed of grease bearing life test are analyzed and discussed, presented that different greases should apply different ...

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.

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 ...

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 ...

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.

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] SUMMARY Rolling bearings grease lubrication is often preferred instead oils because of the lubricating system ...

Bearing grease deterioration - ResearchGa

Download Citation on ResearchGate | Bearing grease deterioration | About 80% of bearing mountings are grease lubricated. This has many advantages, such as eliminating complicated oil cooling ...

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 ...

Bearing grease deterioration - Gafitanu - 2001 .

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.

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] SUMMARY Rolling bearings grease lubrication is often preferred instead oils because of the lubricating system ...

Failure Analysis of a Grease-Lubricated Cylindrical Roller .

Peer-review under responsibility of the Organizing Committee of ICIAME 2014. doi: 10.1016/j.protcy.2014.08.009 Available online at www.sciencedirect.com ScienceDirect 2nd International Conference on Innovations in Automation and Mechatronics Engineering, ICIAME 2014 Failure Analysis of a Grease-Lubricated Cylindrical Roller Bearing Aditya*, M ...

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 ...

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

NORDTRIB '98: Proceedings of the 8th International .

Bearings Grease Deterioration M. D. Gafitanu, F. Farcas, G. D. Hagiu and M. C. Tiron 561 Geometrical Raceways Faults Diagnosis of Ball Bearings F. Taraboanja, M. Gafijanu and R. Grigorescu 569 Comparative Study of a Machine-Vision-Based Particle Inspection and Classification Analyser and a Commercial Particle Counter K. K. Makela and M ...