335312 — Motor and Generator Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing electric motors (except internal combustion engine starting motors), power generators (except battery charging alternators for internal combustion engines), and motor generator sets (except turbine generator set units). This industry includes establishments rewinding armatures on a factory basis.
Exclusions & Cross-References
- Manufacturing electric outboard motors--are classified in U.S. Industry 333618, Other Engine Equipment
- Manufacturing;
- Manufacturing gas, steam, or hydraulic turbine generator set units--are classified in U.S. Industry 333611,
- Turbine and Turbine Generator Set Units Manufacturing;
- Manufacturing starting motors and battery charging alternators for internal combustion engines--are
- classified in Industry 336320, Motor Vehicle Electrical and Electronic Equipment Manufacturing;
- Rewinding armatures, not on a factory basis--are classified in Industry 811310, Commercial and Industrial
- Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance; and
- Manufacturing welding and soldering equipment (except handheld soldering irons)--are classified in U.S.
- Industry 333992, Welding and Soldering Equipment Manufacturing.
Overview Facts
| NAICS Code | 335312 |
|---|---|
| Industry Title | Motor and Generator Manufacturing |
| SBA Size Standard | 1,250 employees |
| IRS PBA Code | 335310 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 335 → 3353 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3621 - Motors and Generators (via SIC1987:3621→NAICS1997:335312→2002:335312→2007:335312→2012:335312→2017:335312→2022:335312)
- SIC 7694 - Armature Rewinding Shops (via SIC1987:7694→NAICS1997:335312→2002:335312→2007:335312→2012:335312→2017:335312→2022:335312)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 335312:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 3353
Frequently Asked Questions (FAQ)
Is 335312 a valid 2022 NAICS code?
NAICS 335312 is 'Motor and Generator Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,250 employees.
What is the SBA size standard for NAICS 335312?
The SBA small business size standard for NAICS 335312 is 1,250 employees (based on employees).
What is the legacy SIC code mapping for 335312?
NAICS code 335312 maps to the legacy 1987 SIC codes: 3621 - Motors and Generators, 7694 - Armature Rewinding Shops.