Analysis
NAICS 333613 is the 2022 national industry for mechanical power transmission equipment manufacturing, part of 33361 (Engine, Turbine, and Power Transmission Equipment Manufacturing). Census lists 14 example activities under it in the official index.
County Business Patterns counts 232 US establishments in this code in 2023, employing 17,058 people at an average annual payroll of $73,526 per employee (59th percentile of national industries). 18% of the establishments have fewer than five employees, which points to larger operations.
Its index entries, the activities Census uses to assign businesses to this code, include ball joints (except aircraft, motor vehicle) manufacturing, bearings, plain (except internal combustion engine)…, bushings, plain (except internal combustion engine)… and chains, power transmission, manufacturing, among 14 in all.
Its goods appear in 11 statistical lines of the US tariff schedule, mostly under headings 8483 (transmission shafts (including camshafts and crankshafts)…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.
Census lists 4 related activities that belong elsewhere, most often in 336350, 336413, 332991 and 333612. 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.
For example, manufacturing motor vehicle power transmission equipment are classified in 336350 (Motor Vehicle Transmission and Power Train Parts Manufacturing) instead.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing mechanical power transmission equipment (except motor vehicle and aircraft), such as plain bearings, clutches (except motor vehicle and electromagnetic industrial control), couplings, joints, and drive chains.
Source: US Census Bureau, NAICS 2022 Manual.
Not this code if…
| The business mainly does | Use instead |
|---|---|
| Manufacturing motor vehicle power transmission equipment | 336350 Motor Vehicle Transmission and Power Train Parts Manufacturing |
| Manufacturing aircraft power transmission equipment | 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing |
| Manufacturing ball and roller bearings | 332991 Ball and Roller Bearing Manufacturing |
| Manufacturing gears, speed changers, and industrial high-speed drives (except hydrostatic) | 333612 Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing |
Index entries (14)
- Ball joints (except aircraft, motor vehicle) manufacturing
- Bearings, plain (except internal combustion engine), manufacturing
- Bushings, plain (except internal combustion engine), manufacturing
- Chains, power transmission, manufacturing
- Collars, shaft for power transmission equipment, manufacturing
- Couplings, mechanical power transmission, manufacturing
- Drive chains, bicycle and motorcycle, manufacturing
- Joints, swivel (except aircraft, motor vehicle), manufacturing
- Joints, universal (except aircraft, motor vehicle), manufacturing
- Pulleys, power transmission, manufacturing
- Railroad car journal bearings, plain, manufacturing
- Sheaves, mechanical power transmission, manufacturing
- Sprockets, power transmission equipment, manufacturing
- Universal joints (except aircraft, motor vehicle) manufacturing