History of Science and Engineering Annotation << Back Jubilee scientific readings dedicated to the 100th anniversary of the birth of academician S.A. Khristianovich V.F. Shapovalova, G.I. Mihailov Patriarch of gear treatment A.K. Sidorenko (to the 100 anniversary from the date of a birth) The article touches upon the creative activities of k.t.s. A.K. Sidorenko, well-known sientiat and practicist in the area of lorge-modul gears, merited inventor of the USSR, whose 100-th annivesary was celebrated in December, 2008. Key words: gear wheels, large modulus, ways of teeth formation (cutting), machine tools, instrument, long term practice.