Establishments primarily engaged in manufacturing speed changers, industrial high-speed drives, except hydrostatic drives, and gears. Establishments primarily engaged in manufacturing automotive power transmission equipment are classified in Industry 3714; those manufacturing aircraft power transmission equipment are classified in Industry 3728; and those manufacturing industrial hydrostatic drives (transmissions) are classified in Industry 3594.
- Drives, high-speed industrial: except hydrostatic
- Gearmotors (power transmission equipment)
- Gears, power transmission: except motor vehicle and aircraft
- Reducers, speed
- Reduction gears and gear units for turbines, except automotive and
- Speed changers (power transmission equipment)
- Speed reducers (power transmission equipment)
- Torque converters, except motor vehicle