2017 NAICS Definition

T = Canadian, Mexican, and United States industries are comparable.

333612 Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing gears, speed changers, and industrial high-speed drives (except hydrostatic).

Cross-References. Establishments primarily engaged in--

• Manufacturing motor vehicle power transmission equipment--are classified in Industry 336350, Motor Vehicle Transmission and Power Train Parts Manufacturing;
• Manufacturing aircraft power transmission equipment--are classified in U.S. Industry 336413, Other Aircraft Parts and Auxiliary Equipment Manufacturing; and
• Manufacturing industrial hydrostatic transmissions--are classified in U.S. Industry 333996, Fluid Power Pump and Motor Manufacturing.

2007 NAICS		2012 NAICS		2017 NAICS		Corresponding Index Entries
333612		333612		333612		Drives, high-speed industrial (except hydrostatic), manufacturing
333612		333612		333612		Gearmotors (i.e., power transmission equipment) manufacturing
333612		333612		333612		Gears, power transmission (except aircraft, motor vehicle), manufacturing
333612		333612		333612		Motors, gear, manufacturing
333612		333612		333612		Reducers, speed, manufacturing
333612		333612		333612		Reduction gears and gear units (except aircraft power transmission equipment, automotive) manufacturing
333612		333612		333612		Speed changers (i.e., power transmission equipment) manufacturing
333612		333612		333612		Speed reducers (i.e., power transmission equipment) manufacturing