NAICS UNIVERSITY · Free research for insurance agents
Motor and Generator Manufacturing
NAICS 335312 · United States · 2022 edition
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.
Start the review with product liability.
For Motor and Generator Manufacturing, the saved research highlights product liability, employee injuries, fire and explosion. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- What are the primary end-use applications for the motors and generators produced — industrial, commercial, or any specialized sectors such as defense, medical, or aerospace?
- Does the facility perform armature rewinding, and if so, is it on a factory basis or for specific customer accounts?
- What flammable materials, solvents, or varnish processes are used on-site, and what fire suppression systems are in place?
- Are there any contractual indemnification or additional insured requirements from OEM customers or distributors?
- What is the prior product liability loss history, particularly any claims tied to downstream equipment failure?
- For Motor and Generator Manufacturing, what should the underwriter know about products supplied to defense, aerospace, medical, or nuclear applications, which can dramatically elevate product liability exposure?
- For Motor and Generator Manufacturing, what should the underwriter know about prior product liability losses, especially those involving downstream equipment failure or personal injury?
- For Motor and Generator Manufacturing, what should the underwriter know about facilities with known environmental contamination or underground storage tank history?
Activities described by this code
Other activities to examine
- Manufacturing electric outboard motors: 333618 — Other Engine Equipment Manufacturing
- Manufacturing gas, steam, or hydraulic turbine generator set units: 333611 — Turbine and Turbine Generator Set Units Manufacturing
- Manufacturing starting motors and battery charging alternators for internal combustion engines: 336320 — Motor Vehicle Electrical and Electronic Equipment Manufacturing
- Rewinding armatures, not on a factory basis: 811310 — Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance;
- Manufacturing welding and soldering equipment (except handheld soldering irons): 333992 — Welding and Soldering Equipment Manufacturing
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
Establishments in this class manufacture electric motors, power generators, and motor generator sets through processes that typically include metal fabrication, copper winding, rotor and stator assembly, insulation application, and quality testing. Some facilities also perform factory-basis armature rewinding. Products are generally sold to OEMs, industrial distributors, or end-use commercial and industrial customers.
Questions to investigate
- What are the primary end-use applications for the motors and generators produced — industrial, commercial, or any specialized sectors such as defense, medical, or aerospace?
- Does the facility perform armature rewinding, and if so, is it on a factory basis or for specific customer accounts?
- What flammable materials, solvents, or varnish processes are used on-site, and what fire suppression systems are in place?
- Are there any contractual indemnification or additional insured requirements from OEM customers or distributors?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.