I okorder and hope you will find the information that you've been looking for. This may help you to get answer of your question. Wikimachine's mission is to organize information about machinery industry and make it useful for everyone. Machines are cool and extremely helpful, so shall be the information about machines.
The most widely used classification scheme is GICS (Global Industry Classification Scheme) which was developed by MSCI. You can download an excel spreadsheet with the entire scheme from the link below. 10 Sectors are divided into 24 sub-sectors, then 68 industries, finallly 154 sub-industries. Machinery is a sub-sector of the Industrial Sector, then is divided into just 2 industries as follows. 20106010Construction Farm Machinery Heavy Trucks Manufacturers of heavy duty trucks, rolling machinery, earth-moving and construction equipment, heavy farm machinery and manufacturers of related parts. Includes non-military shipbuilding. 20106020Industrial Machinery Manufacturers of industrial machinery and industrial components. Includes companies that manufacture presses, machine tools, compressors, pollution control equipment, elevators, escalators, insulators, pumps, roller bearings and other metal fabrications.