Online from: 1948
Subject Area: Mechanical & Materials Engineering
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Article citation: John Taylor, Jorge Seabra, (2011) "Editorial", Industrial Lubrication and Tribology, Vol. 63 Iss: 1, pp. -
Gears and simple gear transmissions were already common in ancient times, being used in several applications, such as water pumping stations, wind mills and grain mills. Even today, many centuries after gears were invented, there are no alternative solutions that are as efficient and compact as gear transmissions for converting torque, adapting speed and transferring power. Consequently, gears are found in all fields of technology, from computers (100 W) to power generators (100 MW), including passenger cars (100 kW).
In recent decades, research and development in the field of gears has been characterized by a constant growth of the transmitted power and torque, using smaller and lighter gears. These requirements lead to very compact gears with high-power density (kW/kg). This growing enhanced performance originated very significant developments at all levels:
The papers included in this special issue of Industrial Lubrication and Tribology (ILT) present several new contributions in several areas: gear design, gear failure (tooth breakage, micropitting, wear), gear power loss, gear materials, and gear lubricants, among others.
The Editors of this issue of ILT are most thankful to all authors for their excellent contributions.
John Taylor, Jorge Seabra