... efficiency. This paper aims to address these issues. Design/methodology/approach The paper takes the following approach: theoretical and experimental investigations of bearing arrangements and gear design as well as lubricant type and lubricant supply to the components lead to efficiency optimisation...

...Jorge Seabra; Luis Magalhaes; Ramiro Martins; Cristiano Locateli; Jorge Seabra Purpose The purpose of this paper is to develop innovative geometry for gears aiming low power loss and easy manufacturing. Design/methodology/approach New gear profiles were developed and studied, and gears were...

.../ZrCN applied on nitrided F1272 steel for gear applications. Design/methodology/approach Tribological characterization has been completed by several tribological tests performed under ball‐on‐disc configuration, extreme pressure tests to determine the maximum load before the films failure...

...Jorge Seabra; Markus Klein; Bernd‐Robert Höhn; Klaus Michaelis; Rainer Annast Purpose A failure mode called “flank breakage” is increasingly observed in cylindrical and bevel gears. Up to now, there was no calculation method available to determine the load‐carrying capacity related to flank...

... with gears holding a high surface roughness and with a ester‐based lubricant. It was interesting to see the differences observed for surface evolution, for other base oils and also for gears with lower roughness. Practical implications The main implication of this work is the understanding that major...

...Sharief Weeder; Petr Vavruch When replacing a complex component formulation of the company’s premium industrial EP gear oils, a suitable additive pack was selected based on extended EP and other tests, and critical applications were identified. To satisfy the most critical application, a number...