Speed Changer, Industrial High-speed Drive, & Gear Manufacturing
Key Figures
Figures are published for NAICS 333612 directly.
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Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing gears, speed changers, and industrial high-speed drives (except hydrostatic).
Source: US Census Bureau, 2017 NAICS Definitions. Public domain.
Which code does this activity belong in?
Establishments classified in NAICS 333612 manufacture gears, speed changers, and industrial high-speed drives as their primary activity. This code excludes hydrostatic drives, which remain outside the scope. The boundary with NAICS 333613 is that Mechanical Power Transmission Equipment Manufacturing covers bearings, clutches, couplings, joints, and drive chains, whereas NAICS 333612 focuses specifically on gears and speed changers as transmission devices.