2002 NAICS Definitions

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.

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No change 1997 to 2002

2002 NAICS to 1987 SIC

1997 Economic Census

Bridge Between 1997 NAICS and SIC

2002 NAICS	1997 NAICS	1987 SIC	Corresponding Index Entries
333612	333612	3566	Drives, high-speed industrial (except hydrostatic), manufacturing
333612	333612	3566	Gearmotors (i.e., power transmission equipment) manufacturing
333612	333612	3566	Gears, power transmission (except aircraft, motor vehicle), manufacturing
333612	333612	3566	Motors, gear, manufacturing
333612	333612	3566	Reducers, speed, manufacturing
333612	333612	3566	Reduction gears and gear units (except aircraft power transmission equipment, aut
333612	333612	3566	Speed changers (i.e., power transmission equipment) manufacturing
333612	333612	3566	Speed reducers (i.e., power transmission equipment) manufacturing

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