NAICS 335312:
Motor and Generator Manufacturing
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.
Resolvers manufacturingDynamotors manufacturingServomotors manufacturing+5 examples
Matching SIC code: 3621 Motors and Generators (also 7694 Armature Rewinding Shops)
Where it sits
- 31-33ManufacturingSector
- 335Electrical Equipment, Appliance, and Component ManufacturingSubsector
- 3353Electrical Equipment ManufacturingIndustry group
- 33531Electrical Equipment ManufacturingNAICS industry
- 335312Motor and Generator ManufacturingNational industry
Largest companies with NAICS 335312
Updated Nov 9, 2026| Rank | Company | Headquarters | Employees |
|---|---|---|---|
| 1 |  Nidec Motor Corporationnidec-motor.com | St. Louis, US | 5.2K |
| 2 |  Generacgenerac.com | Waukesha, US | 4.4K |
| 3 |  Rehlkorehlko.com | Milwaukee, US | 2.9K |
| 4 |  Regal Beloit Corporationregalrexnord.com | Beloit, US | 2.8K |
| 5 |  Kollmorgenkollmorgen.com | Radford, US | 925 |
| 6 |  FLANDERSflandersfood.com | Evansville, US | 902 |
| 7 |  ABB Motors and Drives North Americaabb.com | Fort Smith, US | 819 |
| 8 |  Toshiba International Corporationtoshiba.com | Houston, US | 795 |
| 9 |  Mainspring Energymainspringenergy.com | US | 539 |
| 10 |  Allientallient.com | Buffalo, US | 531 |
Not this code?
Similar activities the Census classifies elsewhere.
- 333618Other Engine Equipment ManufacturingManufacturing electric outboard motors
- 333611Turbine and Turbine Generator Set Units ManufacturingManufacturing gas, steam, or hydraulic turbine generator set units
- 336320Motor Vehicle Electrical and Electronic Equipment ManufacturingManufacturing starting motors and battery charging alternators for internal combustion engines
- 811310Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and MaintenanceRewinding armatures, not on a factory basis
Questions about NAICS 335312
Which businesses use NAICS 335312?
What SIC code matches NAICS 335312?
How many companies have NAICS 335312?
Code titles, definitions, examples and SIC matches: NAICS 2022 and the Census concordances, US Census Bureau. Company counts and lists: Crustdata, companies with a website, each by its primary code, updated weekly. Employee counts are estimates.