Gear Technology Magazine
www.geartechnology.com/articles/21522-design-for-silence-new-concepts-and-techniques-for-industrial-gears

Design for Silence: New Concepts and Techniques for Industrial Gears

September 1, 1999
For a long time, relatively high noise levels have been generally accepted for industrial gear units in the 10-100 kW power range. However, due to changing environmental awareness - both in and around industrial sites - customers expectations have moved drastically towards low noise as a key differentiating factor.