Abstract
In order to systematically investigate the tribological behavior of machine elements, several different tribometers based on simplifications of the contact situation have been developed and used successfully in the past. Many of these tribometers have become a standard testing equipment for tribologists. For the contact of radial shaft seals (RSSs), currently no such tribometer exists that can be used to characterize their behavior in a satisfying manner. In this paper, a tribologically equivalent system for RSSs is presented. The contact between the sealing lip and shaft is reproduced using a ring-shaped sample prepared from elastomer test slabs of the respective application material in contact with a conical shaft. The cone angle is chosen to properly represent the contact angles of the RSS under investigation by means of finite element (FE)-simulation of the contact pressure. The test rig allows for the on-line determination of friction, contact temperature, and wear progress. Results show good agreement of friction coefficient and wear behavior for the pairing of two typical elastomers with synthetic and mineral-based lubricants.
Issue Section:
Applications
Topics:
Friction,
Optimization,
Sealing (Process),
Simulation,
Tribometers,
Wear,
Pressure,
Tribology,
Rubber,
Lubricants
References
1.
Gesellschaft für Tribologie e.V. (Hg.)
, “Reibung, Schmierung und Verschleiß: Forschung und praktische Anwendungen. Tribologie – Verschleiß, Reibung - Definitionen und Begriffe.”2.
DIN ISO 14635
, 2006
, “Gears “FZG Test Procedures” Part 1: FZG Test Method A/8,3/90 for Relative Scuffing Load-Carrying Capacity of Oils (ISO 14635-1:2000).”3.
DIN ISO 51819
, 2016
, “Testing of Lubricants—Mechanical-Dynamic Testing in the Roller Bearing Test Apparatus FE8.”4.
ASTM D 2783
, 2019
, “Test Method for Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method).”5.
Flitney
, R. K.
, 2014
, Seals and Sealing Handbook
, Butterworth-Heinemann
, Oxford
.6.
Thielen
, S.
, Magyar
, B.
, and Sauer
, B.
, 2020
, “Thermoelastohydrodynamic Lubrication Simulation of Radial Shaft Sealing Rings
,” ASME J. Tribol.
, 142
(5
), p. 052301
. 10.1115/1.40458027.
Freudenberg Sealing Technologies
, 2018
, “Dynamic Oil Compatibility Tests for Freudenberg Radial Shaft Seals to Release the Usage in FLENDER-Gear Units Applications (Table T 7300).”8.
SEW Eurodrive
, 2016
, “Prüfvorschrift 97 118 03 15: Statische und dynamische Prüfungen von Radialwellendichtringen (RWDR).”9.
Jagger
, E. T.
, 1957
, “Rotary Shaft Seals: The Sealing Mechanism of Synthetic Rubber Seals Running at Atmospheric Pressure
,” Proc. Inst. Mech. Eng.
, 171
(1
), pp. 597
–616
. 10.1243/PIME_PROC_1957_171_050_0210.
Sommer
, M.
, and Haas
, W.
, 2012
, “Verlustreduzierung Fettabdichtender Radial-Wellendichtringe
,” ISC Internationale Dichtungstagung
, Sept. 9–13
, Stuttgart
, pp. 603–615.11.
Wilke
, M.
, Wollesen
, V.
, and von Estorff
, O.
, 2012
, “Dynamical Testing of Oil-Elastomer-Combinations With the “RWDR-Tribometer
,” 18th International Colloquium Tribology—Industrial and Automotive Lubrication
, Esslingen
, Jan. 10–12
.12.
Frick
, A.
, and Muralidharan
, V.
, 2018
, “Rotational Cone Tribometer (RCT) for Approaching the Tribological Behavior of Hard and Soft Sealing Materials Under Dynamic Line Contact
,” Macromol. Symp.
, 378
(1
), p. 1600120
. 10.1002/masy.20160012013.
Sommer
, M.
, Bauer
, F.
, and Haas
, W.
, 2014
, “Investigation of the Operational Behaviour of Grease Lubricated Radial Lip Seals Using a Modified Ring on Disc Tribometer
,” Tribologie Schmierungstechnik
, 61
(6
), pp. 40
–46
.14.
Burkhart
, C.
, Weyrich
, D.
, Magyar
, B.
, and Sauer
, B.
, 2018
, “Experimental Determination and Comparison of the Contact Temperature of Radial Shaft Seals and Its Derived Tribological System
,” 20th International Sealing Conference
, Oct. 10–11
, Stuttgart, VDMA
, pp. 197
–218
.15.
Angerhausen
, J.
, Woyciniuk
, M.
, Murrenhoff
, H.
, and Schmitz
, K.
, 2019
, “Simulation and Experimental Validation of Translational Hydraulic Seal Wear
,” Tribol. Int.
, 2019
(134
), pp. 296
–307
. 10.1016/j.triboint.2019.01.04816.
Karger-Kocsis
, J.
, Mousa
, A.
, Major
, Z.
, and Békési
, N.
, 2008
, “Dry Friction and Sliding Wear of EPDM Rubbers Against Steel as a Function of Carbon Black Content
,” Wear
, 264
(3–4
), pp. 359
–367
. 10.1016/j.wear.2007.03.02117.
Mokhtari
, M.
, and Schipper
, D. J.
, 2016
, “Existence of a Tribo-Modified Surface Layer of BR/s-SBR Elastomers Reinforced With Silica or Carbon Black
,” Tribol. Int.
, 2016
(96
), pp. 382
–388
. 10.1016/j.triboint.2014.09.02118.
Mofidi
, M.
, 2009
, “Tribology of Elastomeric Seal Materials
,” PhD thesis, Luleå University of Technology
, Luleå
.19.
xue Shen
, M.
, Li
, B.
, and Zhang
, J.
, 2020
, “Effect of Particle Size on Tribological Properties of Rubber/Steel Seal Pairs Under Contaminated Water Lubrication Conditions
,” Tribol. Lett.
, 68
(1
), p. 40
. 10.1007/s11249-020-1285-120.
Burkhart
, C.
, Emrich
, S.
, Kopnarski
, M.
, and Sauer
, B.
, 2020
, “Excessive Shaft Wear Due to Radial Shaft Seals in Lubricated Environment. Part II: Measures Against Excessive Shaft Wear
,” Wear
, 2020
(462–463
), pp. 203483
. 10.1016/j.wear.2020.20348321.
Horve
, L.
, 1991
, “The Correlation of Rotary Shaft Radial Lip Seal Service Reliability and Pumping Ability to Wear Track Roughness and Microasperity Formation.” SAE Technical Papers.22.
DIN 3761
, 1984
, “Rotary Shaft Lip Type Seals for Automobiles.” Withdrawn.23.
DIN 3760
, “OTHERINFORadial-Wellendichtringe.”24.
Burkhart
, C.
, Emrich
, S.
, Kopnarski
, M.
, and Sauer
, B.
, 2020
, “Excessive Shaft Wear Due to Radial Shaft Seals in Lubricated Environment. Part I: Analysis and Mechanisms
,” Wear
, 2020
(460–461
), pp. 203419
. 10.1016/j.wear.2020.20341925.
Thielen
, S.
, Magyar
, B.
, Sauer
, B.
, Schneider
, F.
, Mayer
, P.
, Kirsch
, B.
, Müller
, R.
, and Aurich
, J. C.
, 2017
, “Functional Investigation of Zero Lead Radial Shaft Seal Counter-Surfaces Turned With a Special Method
,” Tribol. Int.
, 2017
(118
), pp. 442
–450
. 10.1016/j.triboint.2017.02.00226.
Burkhart
, C.
, Peter
, K.
, Thielen
, S.
, and Sauer
, B.
, 2020
, “Online Determination of Reverse Pumping Values of Radial Shaft Seals and Their Tribologically Equivalent System
,” 22nd International Colloquium Tribology: Industrial and Automotive Lubrication
, Esslingen
, Jan. 28–30
, Technische Akademie Esslingen (TAE)
, pp. 89–90.27.
Frölich
, D.
, Jennewein
, B.
, and Sauer
, B.
, 2013
, “A Comprehensive Model for the Simultaneous Analysis of Temperature, Friction and Wear in Radial Shaft Seal Rings
,” 5th World Tribology Congress (WTC)
, Sept. 9–13
, Torino
.28.
Frölich
, D.
, Magyar
, B.
, and Sauer
, B.
, 2014
, “A Comprehensive Model of Wear, Friction and Contact Temperature in Radial Shaft Seals
,” Wear
, 2014
(311
), pp. 71
–80
. 10.1016/j.wear.2013.12.03029.
Frölich
, D.
, 2016
, “Strategien Und Modelle Zur Simulation Des Betriebsverhaltens Von Radial-Wellendichtringen
,” PhD thesis, Technische Universität Kaiserslautern
, Kaiserslautern
.30.
Jennewein
, B.
, 2011
, “Wechselwirkungsverhalten der Systemparameter im RWDR-System. Forschungsvorhaben 574 II.” Technical Report IGF-Nr.: 17449 N, Forschungsvereinigung für Antriebstechnik e.V. (FVA), Forschungsstelle MEGT TU Kaiserslautern, IGF-Nr.: 15702 N.31.
Frölich
, D.
, Fodor
, B.
, and Sauer
, B.
, 2011
, “Untersuchung des Verschleißverhaltens von Elastomeren an Radialwellendichtring und Ersatzsystems”. 52. Tribologie-Fachtagung (GfT) 2011, Gesellschaft für Tribologie, e.V. GfT, Göttingen
, pp. 55/1–55/18.32.
Jennewein
, B.
, 2016
, “Integrierter Berechnungsansatz Zur Prognose Des Dynamischen Betriebsverhaltens Von Radialwellendichtringen
,” PhD thesis, Technische Universität Kaiserslautern
, Kaiserslautern
.33.
Archard
, J. F.
, 1953
, “Contact and Rubbing of Flat Surfaces
,” J. Appl. Phys.
, 24
(8
), pp. 981
–988
. 10.1063/1.172144834.
Engelke
, T.
, 2011
, “Einfluss Der Elastomer-Schmierstoff-Kombination Auf Das Betriebsverhalten Von Radialwellendichtringen
,” PhD thesis, Gottfried Wilhelm Leibniz Universität Hannover
, Hanover
.35.
Magyar
, B.
, and Frölich
, D. S. B.
, 2013
, “Temperaturberechnung Im RWDR-Dichtkontakt,” 54. Tribologie Fachtagung (GfT) 2012, Göttingen, pp. 7/1–7/9.36.
Burkhart
, C.
, Weyrich
, D.
, Heimes
, J.
, and Sauer
, B.
, 2018
, “Temper-aturverhalten eines Dichtsystems Vollvalidiertes thermisches Netzwerk eines tribologischen Ersatzsystems f¨ur Radial-wellendichtringe
,” Dichtungstechnik Jahrbuch 2019. ISGATEC, ch
, 2019
(1
), pp. 221
–235
.37.
Burkhart
, C.
, Weyrich
, D.
, and Sauer
, B.
, 2019
, Jahrbuch 2020 Dichten.Kleben. Polymer. ISGATEC, ch. Optimierung eines tribologisches Ersatzsystems Einsatz eines ganzheitlichen, validierten FE-Simulationsmodells, pp. 172–192.38.
Kammüller
, M.
, and Haas
, W.
, 1986
, “Physikalische Ursachen Der Dichtwirkung Von Radial-Wellendichtringen
,” ATZ Auto. Z.
, 1986
(88
), pp. 39
–45
.39.
Guo
, F.
, Jia
, X.
, Longke
, W.
, Salant
, R. F.
, and Wang
, Y.
, 2014
, “The Effect of Wear on the Performance of a Rotary Lip Seal
,” ASME J. Tribol.
, 136
(4
), p. 0417031
.40.
Siebert
, H.
, and Prem
, E.
, 2010
, “The Influence of Gear Oils on the Sealing- and Friction Behaviour of Radial Shaft Seals
,” 17th International Colloquium Tribology: Industrial and Automotive Lubrication
, Esslingen
, Technische Akademie Esslingen (TAE)
, pp. 422–430.Copyright © 2021 by ASME
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