Analysis and Prevention of Component and Equipment Failures
This article first reviews variations within the most common types of gears, namely spur, helical, worm, and straight and spiral bevel. It then provides information on gear tooth contact and gear metallurgy. This is followed by sections describing the important points of gear lubrication, the measurement of the backlash, and the necessary factors for starting the failure analysis. Next, the article explains various gear failure causes, including wear, scuffing, Hertzian fatigue, cracking, fracture, and bending fatigue, and finally presents examples of gear and reducer failure analysis.
Neville Sachs, Neville W. Sachs, Failure Analysis of Gears and Reducers, Analysis and Prevention of Component and Equipment Failures, Vol 11A, ASM Handbook, Edited By Brett A. Miller, Roch J. Shipley, Ronald J. Parrington, Daniel P. Dennies, ASM International, 2021, p 497–511, https://doi.org/10.31399/asm.hb.v11A.a0006820
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