Results 161 to 170 of about 413 (204)
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Influence of mass temperature on gear scuffing
Tribology International, 2018Abstract A new scuffing parameter for gears lubricated with mineral base oils is developed, proposing the existence of gear mass temperatures which are critical for each lubricant (viscosity grade). The introduction of the total cycle of the gear for mass temperatures calculation is supported by a theoretical background that was clearly established ...
J Castro, J Seabra
exaly +2 more sources
Effect of ageing automotive gear oils on scuffing and pitting
Tribology International, 2008Abstract The aim of this work is to compare automotive gear oils of different performance levels (API GL) from the point of view of their resistance to degradation due to ageing. The influence of the gear oil degradation on scuffing and rolling contact fatigue (pitting) has been assessed.
Waldemar Tuszyński +2 more
exaly +2 more sources
Scuffing tests on gear oils in the FZG apparatus
Wear, 1961The FZG test is a usual and standardized method in West Germany to evaluate the antiscuffing properties of oils for reduction gears, hypoid gears, automatic transmission gears, etc. The paper gives a brief survey of the test apparatus, the test gears, and the test procedure.
G. Niemann, H. Rettig, G. Lechner
+4 more sources
A review on gear scuffing studies: Theories, experiments and design
Tribology InternationalCaichao Zhu, Huaiju Liu
exaly +2 more sources
Influence of Micro-Geometry on Gear Scuffing
SAE Technical Paper Series, 2015<div class="section abstract"><div class="htmlview paragraph">Scuffing is an instantaneous failure which occurs when the meshed gear flanks undergo adhesive wear under extreme operating temperatures at medium- or high-speed conditions. It is one of the common failures in transmission gears, which tend to operate under long-duty cycle hours.
Venu Ganti +3 more
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Influence of lubricant type in gear scuffing
Industrial Lubrication and Tribology, 2008PurposeThis paper aims to investigate the scuffing load‐carrying capacity of three gear oils: a standard mineral lubricant containing extreme pressure and anti‐wear additives (M0) and two biodegradable saturated esters containing low toxicity additives (E1 and E2).Design/methodology/approachFour‐ball wear tests were performed, according to standard ...
R. Martins, N. Cardoso, J. Seabra
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The Effect of Lubricants on Gear Tooth Scuffing
A S L E Transactions, 1959This paper discusses the effect of some lubricant variables and other relevant factors on gear tooth scuffing. Scuffing is defined as any form of scoring or abrasion of the tooth surface due to metal-to-metal contact. The scuff-limited load is defined as the tooth load at which an arbitrary amount of the working tooth area is scuffed.
P. M. Ku, B. B. Baber
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A new scuffing shock test method for the determination of the resistance to scuffing of coated gears
Archives of Civil and Mechanical Engineering, 2012Abstract An improvement in the scuffing resistance of toothed gears is achievable by e.g. the deposition of thin, hard coatings onto the gear teeth. However, the testing of the scuffing resistance of coated gears requires the application of specialised test methods.
W. Tuszynski +3 more
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Wear and scuffing of austempered ductile iron gears
Wear, 1998This paper enhances actual knowledge of the properties of austempered ductile iron (ADI) as a gear material. Results from scuffing tests performed with ADI gears on a FZG test rig are presented and discussed. Contact condition analysis is done using elasto-hydrodynamic theory along with several experimental techniques, as surface electronic scanning ...
L. Magalha˜es, J. Seabra
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