MANUAL Published: 08 November 2019

Chapter 19 | Gear Lubricants


This chapter describes the early chronology of gear design to modern gear lubricant specifications for industrial and automotive applications. Topics discussed are function of gear lubricants, gear types, and their lubrication and failure modes. Gear lubricant's primary functions are described for preventing corrosion of rust and yellow metals, protection under extreme pressure, wear reduction, foam suppression, prolonged oxidation, water tolerance, and to be able to lubricate under some level of contamination. A short description is also provided on most typical additives used in gear lubricants. A section on the classification and performance testing of industrial and automotive gear lubricants provides details on test methods. Specifications for meeting common automotive and industrial gear lubricants are also detailed for comparison.

Author Information

Bala, Vasu
Tiarco Chemical, Dalton, GA, US
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Developed by Committee: D02
Pages: 721–752
DOI: 10.1520/MNL3720160014
ISBN-EB: 978-0-8031-7090-2
ISBN-13: 978-0-8031-7089-6