Gear Technology Magazine
www.geartechnology.com/articles/20571-high-temperature-testing-of-stanyl-plastic-gears-a-comparison-with-tensile-fatigue-data

High-Temperature Testing of Stanyl Plastic Gears: A Comparison with Tensile Fatigue Data

March 1, 2010
This paper shows an experimental study on the fatigue lifetime of high-heat polyamide (Stanyl) gears running in oil at 140°C. Based on previous works (Refs. 1–2), an analysis is made correcting for tooth bending and calculating actual root stresses. A comparison with tensile bar fatigue data for the same materials at 140°C shows that a good correlation exists between gear fatigue data and tensile bar fatigue data. This insight provides a solid basis for gear designers to design plastic gears using actual material data.