Registry · NAICS Index · Sector 31-33

335312 — Motor and Generator Manufacturing

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.

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 Code335312
Industry TitleMotor and Generator Manufacturing
SBA Size Standard1,250 employees
IRS PBA Code335310 (rolled-up match)
Sectors HierarchySector 31-33 → 335 → 3353
Source / VerifiedUS Census 2022 NAICS Manual / 2026-06-28
NAICS Structure: 335312 National Industry
Sector (2)
31-33
Manufacturing
Subsector (3)
335
Electrical Equipment, Appliance, and Component Manufacturing
Industry Group (4)
3353
Electrical Equipment Manufacturing
Industry (5)
33531
Electrical Equipment Manufacturing
National Industry (6)
335312
Motor and Generator Manufacturing

Legacy SIC Concordance

Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.

Related Resources & Compliance Guides

Further regulatory reference links for NAICS code 335312:

Related Industries in 3353

335311 - Power, Distribution, and Specialty Trans...335313 - Switchgear and Switchboard Apparatus Man...335314 - Relay and Industrial Control Manufacturi...

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.