Film thickness in grease lubricated slow rotating rolling


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However, the replenishment process was slow because of the presence of grease fingers along the track and thickener-deposited film inside the track. ...

Film thickness in grease lubricated slow rotating rolling ....

International audienceFilm thickness measurements in grease lubricated contacts are presented for different greases. The conditions used in the experiments are similar to the ones expected in fully-flooded slow rotating bearings. The results show that at very low speeds grease produces film thicknesses substantially thicker than base oil ...

Effect of Thickener Particle Geometry and Concentration on ....

The aim of this paper was to understand the parameters influencing the grease film thickness in a rolling elastohydrodynamically lubricated contact under fully flooded conditions at medium speeds. Film thickness measurements were taken under pure rolling for six commercial greases and their bled oils.

Film thickness in a grease lubricated ball bearing ....

1. Introduction. About 80–90% of all rolling bearings are lubricated with grease. In general, grease lubricated bearings will operate under starved elasto-hydrodynamic lubrication (EHL) conditions where the film thickness is not only determined by the lubricant properties but also by the availability of lubricant in the inlet of the contacts [, , , , , ].

Film thickness in grease lubricated slow rotating rolling bearin...

Read "Film thickness in grease lubricated slow rotating rolling bearings, Tribology International" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

SKF grease knowledge & sustainability | Evolution Onli...

This theory is well developed for oil lubrication but not yet for grease lubrication where the film thickness is dominated by the availability of lubricant on the running tracks (generally referred to as “starved EHL” [5]) and by thickener “particles”. se bild . 3 shows an interferometry picture of a grease-lubricated contact. The film ...

Senior Staff | prof.dr.ir. P.M Lugt | Department M...

Contact. Room: Horst N105 Email: [email protected] Tel. 06 51 222 474. Teaching. Failure Mechanisms and Life Prediction (201300038) Education. MSc University of Twente. PhD University of Twente

hui cen - Google 学术搜索引...

Film thickness in grease lubricated slow rotating rolling bearings GE Morales-Espejel, PM Lugt, HR Pasaribu, H Cen Tribology International 74, 7-19, 2014 37 ...

Journal Bearings and Their Lubricati...

This article concentrates on oil and grease-lubricated full fluid film journal bearings; but first a brief discussion of pins and bushings, dry and semilubricated journal bearings, and tilting-pad bearings. Low-speed pins and bushings are a form of journal bearing in which the shaft or shell generally does not make a full rotation.

Starvation and Reflow of Point Contact Lubricated with ....

Abstract. Starved film thickness measurements are presented in grease-lubricated point contact under pure rolling condition. The starvation process of different types of greases is recorded and analysed in detail.

H. R. Pasaribu's research works | ECN part of TNO ....

H. R. Pasaribu's 5 research works with 86 citations and 723 reads, including: Film thickness in grease lubricated slow rotating rolling bearings

Fricti...

Morales-Espejel G E, Lugt P M, Pasaribu H R, Cen H. Film thickness in grease lubricated slow rotating rolling bearings. Tribol Int 74: 7-19 (2014) [15] Eriksson P, Wikstr?m V, Larsson R. Grease passing through an elastohydrodynamic contact under pure rolling conditions.

Experimental investigation of EHD grease lubrication in ....

Morales-Espejel G E, Lugt P M, Pasaribu H R, Cen H. Film thickness in grease lubricated slow rotating rolling bearings. Tribol Int 74: 7–19 (2014) CrossRef Google Scholar [12] Cen H, Lugt P M, Morales-Espejel G. On the film thickness of grease-lubricated contacts at low speeds. Tribol Trans 57(4): 668–678 (2014) CrossRef Google Scholar

Senior Staff | prof.dr.ir. P.M Lugt | Department M...

Contact. Room: Horst N105 Email: [email protected] Tel. 06 51 222 474. Teaching. Failure Mechanisms and Life Prediction (201300038) Education. MSc University of Twente. PhD University of Twente

Lubricants | Free Full-Text | Effect of Over Rolling ....

The service life of rolling bearings is significantly affected by the lubricating film formation in elastohydrodynamic (EHD) contacts. Grease lubricated EHD contacts show a film thickness decay from a characteristic rotational speed, which is referred to as starvation. Thus, the film thickness of grease lubricated contacts differs from that of oil lubricated contacts.

Effects of nano thickener deposited film on the behaviour ....

Disappearing and re-formation of a dynamic grease reservoir during operation revealed that grease bled oil to replenish contact. However, the replenishment process was slow because of the presence of grease fingers along the track and thickener-deposited film inside the track.

Starvation and Reflow of Point Contact Lubricated with ....

Abstract. Starved film thickness measurements are presented in grease-lubricated point contact under pure rolling condition. The starvation process of different types of greases is recorded and analysed in detail.

Bearing Lubrication: Oil vs. Grease | Bearing Ti...

This thickness is crucial to the separation of the rolling and sliding elements in a bearing. Bearings in some applications use oil, but grease is the lubricant of choice for 80 to 90% of bearings. Grease consists of about 85% mineral or synthetic oil with thickeners rounding out the rest of the grease volume.

Bearing Lubrication: Oil vs. Grease | Bearing Ti...

This thickness is crucial to the separation of the rolling and sliding elements in a bearing. Bearings in some applications use oil, but grease is the lubricant of choice for 80 to 90% of bearings. Grease consists of about 85% mineral or synthetic oil with thickeners rounding out the rest of the grease volume.

film thickness and friction in grease lubricated contacts ....

In Chapter 4 Lubricant film thickness in a grease and oil lubricated contact, film thickness measurements carried out in a ball-on-disc device with the lubricating greases, their base oils and bleed-oils are presented. Film thickness predictions of Newtonian and non-Newtonian fluids are discussed and applied to the experimental results.