Experimental Study of Elastohydrodynamic Lubrication

Orcutt, F. K.

doi:10.1080/05698196508972109

Cited by 31 publications

(10 citation statements)

References 4 publications

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“…8. Studies of rolling contacts show that a skewed pressure distribution exists with the centroid of this pressure distribution toward the inlet side (2,3,4). This pressure distribution is shown (not to scale) by the dashed lines in Fig.…”

Section: Modified G Factormentioning

confidence: 90%

Operating Torque of Tapered Roller Bearings

Witte

1973

A S L E Transactions

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A theoretical derivation has yielded a general expression for the operating torque of a tapered roller bearing under pure thrust load. Experimental data have been obtained to enable determination of the constant and exponents to make this expression usable. Further theoretical analysis has extended the use of the thrust load equatiorz to pure radial and combined radial and thrust loads. Comparison of calculated and measured operating torques under radial load has ver$ed the theoretical derivation.The bearing geometry variables from the basic torque equation have been combined into a G factor which represents the heat generation potential of a bearing. NOMENCLATURE a, b = exponents Di = mean cone race diameter, in Do = mean cup race diameter, in D, = pitch diameter = $ (Di + Do), in D = mean roller diameter, in ei, e, = offset of centroid of pressure distribution from geometric center of contact (see Fig. 8), in E' = combined modulus of elasticity, Ib/in2 F, = bearing thrust load, Ib F, = bearing radial load, Ib f~ = equivalent thrust load factor G = bearing geometry factor h = cone rib-roller end contact height, inJ , = SjZivall's radial integral k, k', k" = constants K = bearing K factor = ratio of basic dynamic radial load rating to basic dynamic thrust load rating 1 = roller-race contact length, in m = torque per roller Ib-in M = total bearing torque, Ib-in A typical bearing application illustrates use of ihe equations.

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Section: Modified G Factormentioning

confidence: 90%

Operating Torque of Tapered Roller Bearings

Witte

1973

A S L E Transactions

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“…This gives a maximum density increase of 33%. Orcutt (1965) and Kannel (1965-66) measured the pressure distribution in the EHL contact using a surface deposited manganin transducer on the disk surfaces used in the experiments. The pressure spike moves downstream and is reduced in height.…”

Section: Solutionmentioning

confidence: 99%

Fluid Film Lubrication

Bhushan¹

2013

Introduction to Tribology

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“…The M S was received on I1 August 1986 and was accepied fur publicatrun on 30 January 1987. by Orcutt (1) and by Hamilton and Moore (2). Schouten (4) and Kohler (5) later used sensors made of titanium.…”

Section: Notatlonmentioning

confidence: 99%

Measuring Surface Temperatures between Rolling Steel Cylinders Using Double-Layer Transducers

Baumann¹

1987

Proceedings of the Institution of Mechanical Engineers, Part C:

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The signals of the thin-jilm transducers previously used .for the measurement of temperature distributions in elastohydrodynamic contacts have been influenced by the high pressures occurring. At pure rolling conditions when the temperature increase is small, the error caused by pressure reaches nearly the order of magnitude of the temperature signal to be recorded. Using double-layer transducers of a novel type, a reduction of this error of over 90 per cent can be achieved. In this paper temperature measurements at pure rolling conditions are described. It has been shown that a distinct temperature spike occurs at the constriction at the trailing edge of the elastohydrodynamic contact.

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Experimental Study of Elastohydrodynamic Lubrication

Cited by 31 publications

References 4 publications

Operating Torque of Tapered Roller Bearings

Operating Torque of Tapered Roller Bearings

Fluid Film Lubrication

Measuring Surface Temperatures between Rolling Steel Cylinders Using Double-Layer Transducers

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