JB/T 10244-2001 This standard specifies the type, external dimensions, basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of JPT involute cylindrical gear reducer. This standard applies to JPT involute cylindrical gear reducers. This reducer is mainly used in the building materials industry, and can also be used in the transmission of mechanical equipment in mining, metallurgy, chemical industry, light industry and other industries. This standard was first released in May 2001.