335312 - Motor and Generator Manufacturing
Introduction
In the diverse world of manufacturing, NAICS code 335312 stands out as a vital industry classification for businesses involved in the production of motors and generators. This sector powers countless applications—from industrial machinery and transportation to power generation—making it essential for a wide range of economic activities. Whether you are a manufacturer, supplier, or contractor exploring government contracting opportunities, understanding NAICS 335312 is key to navigating this specialized field successfully.
What is NAICS Code 335312?
NAICS code 335312 corresponds to the Motor and Generator Manufacturing industry. This code covers establishments primarily engaged in the manufacturing of:
- Motors (including fractional and integral horsepower motors)
- Generators
- Motor generator sets
These products serve diverse functions across various sectors, such as industrial manufacturing, transportation systems, and power generation facilities.
Sector and Typical Business Activities
- Sector: Manufacturing
- Typical Business Activities:
- Manufacturing electric motors and generators
- Producing motor generator sets
- Fabricating electrical components specific to motors and generators, including armatures, rotors, and slip rings
- Designing and assembling power generators and frequency converters
Size Standards for Eligibility
Businesses classified under NAICS 335312 are considered to be small if they have 1,250 or fewer employees. This size standard is critical for companies seeking government contracts and small business certifications within the motor and generator manufacturing industry.
Examples of Businesses Under NAICS 335312
- Electric motor manufacturers producing various motor types such as servo, torque, and synchronous motors
- Generator manufacturers specializing in power generators and prime mover generator sets
- Companies assembling motor generator sets for industrial or transportation use
Detailed Code Descriptions for NAICS 335312
| Code Detail Description | Included Activities |
|---|---|
| Armature rewinding on a factory basis | Rewinding armatures for electric motors and generators |
| Armatures, industrial, manufacturing | Production of armatures for industrial motors |
| Coils for motors and generators manufacturing | Manufacturing coils used in electrical motors and generators |
| Collector rings for motors and generators manufacturing | Producing collector rings essential for motor operation |
| Commutators, electric motor, manufacturing | Fabricating commutators for electric motors |
| Condensers, synchronous, electric, manufacturing | Making synchronous condensers used in electrical equipment |
| Converters, phase and rotary, electrical equipment | Manufacturing phase and rotary converters |
| Dynamos, electric (except automotive), manufacturing | Producing electric dynamos excluding automotive types |
| Dynamotors manufacturing | Manufacturing dynamotors combining motor and generator |
| Exciter assemblies, motor and generator, manufacturing | Assembling exciters for motors and generators |
| Fractional horsepower electric motors manufacturing | Producing small electric motors with fractional horsepower |
| Frequency converters manufacturing | Manufacturing electric frequency converters (generators) |
| Generating apparatus and parts, electrical (except IC engine/welding) | Producing parts related to electrical generating systems |
| Generator sets, prime mover (except turbine generator sets) | Manufacturing generator sets with prime movers except turbines |
| Generators and sets, electric (except IC engine, welding, turbine generator sets) | Producing electric generators and sets excluding specific types |
| Generators for gas-electric and oil-electric vehicles | Manufacture of generators for hybrid vehicles |
| Generators for storage battery chargers (except IC engine/aircraft) | Producing generators used in battery chargers |
| Ground Power Units (GPU) manufacturing | Manufacturing ground power units for aircraft and other applications |
| Integral horsepower electric motors manufacturing | Producing motors with integral horsepower rating |
| Inverters, rotating electrical, manufacturing | Fabricating rotating electrical inverters |
| Land transportation motors and generators manufacturing | Manufacturing motors and generators used in transportation |
| Motor generator sets (except automotive, turbine generator sets) | Producing motor generator sets excluding automotive types |
| Motors, electric (except engine starting motors, gearmotors, outboard), manufacturing | Manufacturing general electric motors |
| Phase converters (electrical equipment) manufacturing | Producing electrical phase converters |
| Power generators manufacturing | General manufacturing of power generators |
| Prime mover generator sets (except turbine generator sets) manufacturing | Assembly of generator sets with prime movers (excluding turbines) |
| Railway motors and control equipment, electric, manufacturing | Manufacturing electric motors and control equipment for railways |
| Resolvers manufacturing | Producing resolvers for motor control and feedback |
| Rotor retainers and housings manufacturing | Manufacturing rotor retainers and housing parts |
| Rotors (for motors) manufacturing | Fabricating rotors used in electric motors |
| Servomotors manufacturing | Manufacturing servomotors used in precise motion control |
| Slip rings for motors and generators manufacturing | Producing slip rings that conduct current on moving parts |
| Stators for motors manufacturing | Manufacturing stators for electric motors |
| Storage battery chargers (except IC engine-type) manufacturing | Producing battery chargers excluding internal combustion types |
| Synchronous condensers and timing motors, electric, manufacturing | Manufacturing condensers and motors for synchronization |
| Synchronous motors manufacturing | Producing synchronous motors |
| Timing motors, synchronous, electric, manufacturing | Manufacturing electric timing motors |
| Torque motors, electric, manufacturing | Producing electric motors designed for torque applications |
FAQ - NAICS Code 335312
Q: What types of products are covered under NAICS 335312?
A: This code covers the manufacturing of electric motors, generators, motor generator sets, and their related components.
Q: Is NAICS 335312 applicable to automotive motor manufacturing?
A: No, automotive-specific motors and generators are generally classified under different NAICS codes.
Q: What is the employee size standard for small businesses in this industry?
A: Businesses with up to 1,250 employees qualify as small for NAICS 335312.
Q: Can companies that rewind armatures be classified under this code?
A: Yes, armature rewinding on a factory basis is included in NAICS 335312.
Q: Are manufacturers of power inverters included?
A: Yes, manufacturers producing rotating electrical inverters fall under this NAICS code.
By understanding the scope and detailed components of NAICS code 335312 - Motor and Generator Manufacturing, businesses can better position themselves for growth, government contracting, and industry collaboration. Whether you specialize in small fractional horsepower motors or large industrial generator sets, this classification provides a clear roadmap for your manufacturing identity.
