Analysis
NAICS 33361 is the 2022 NAICS industry for engine, turbine, and power transmission equipment manufacturing, part of 3336 (Engine, Turbine, and Power Transmission Equipment Manufacturing). Census lists 54 example activities under it in the official index.
County Business Patterns counts 899 US establishments in this code in 2023, employing 96,251 people at an average annual payroll of $80,745 per employee (69th percentile of national industries). 21% of the establishments have fewer than five employees, which points to larger operations.
Census lists 5 related activities that belong elsewhere, most often in 33635, 33641, 33299 and 33631. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.
Across its national industries Census lists 54 index entries; typical ones are gas turbine generator set units manufacturing, drives, high-speed industrial (except hydrostatic)…, ball joints (except aircraft, motor vehicle) manufacturing and diesel and semidiesel engines manufacturing.
Between 2018 and 2023 the number of establishments fell 9% and employment fell 5%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
Its goods appear in 141 statistical lines of the US tariff schedule, mostly under headings 8407 (spark-ignition reciprocating or rotary internal combustion…), 8406 (steam turbines and other vapor turbines, and parts thereof) and 8483 (transmission shafts (including camshafts and crankshafts)…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.
Official definition
This industry comprises establishments primarily engaged in manufacturing turbines, power transmission equipment, and internal combustion engines (except automotive gasoline and aircraft).
Illustrative Examples:
Clutches and brakes (except electromagnetic industrial controls, motor vehicle) manufacturing Diesel and semidiesel engines manufacturing Electric outboard motors manufacturing Internal combustion engines for hybrid drive systems (except automotive) manufacturing Plain bearings (except internal combustion engine) manufacturing Power transmission pulleys manufacturing Plain bushings (except internal combustion engine) manufacturing Speed changers (i.e., power transmission equipment) manufacturing Speed reducers (i.e., power transmission equipment) manufacturing Turbine generator set units manufacturing Universal joints (except aircraft, motor vehicle) manufacturing
Source: US Census Bureau, NAICS 2022 Manual.
Not this code if…
| The business mainly does | Use instead |
|---|---|
| Manufacturing motor vehicle power transmission equipment | 33635 Motor Vehicle Transmission and Power Train Parts Manufacturing |
| Manufacturing aircraft engines and aircraft power transmission equipment | 33641 Aerospace Product and Parts Manufacturing |
| Manufacturing ball and roller bearings | 33299 All Other Fabricated Metal Product Manufacturing |
| Manufacturing gasoline automotive engines | 33631 Motor Vehicle Gasoline Engine and Engine Parts Manufacturing |
| Manufacturing electric power transmission, electric power distribution equipment, generators, or prime mover generator sets (except turbines) | 33531 Electrical Equipment Manufacturing |
Index entries (54)
- Gas turbine generator set units manufacturing
- Drives, high-speed industrial (except hydrostatic), manufacturing
- Ball joints (except aircraft, motor vehicle) manufacturing
- Diesel and semidiesel engines manufacturing