NAICS 332991 - Ball and Roller Bearing Manufacturing
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What is NAICS 332991
NAICS code 332991 covers establishments primarily engaged in the manufacturing of ball and roller bearings made from various materials. These components are essential mechanical elements used to reduce friction and support loads in rotating machinery. Businesses operating in this sector produce a wide range of bearing types, including spherical, cylindrical, needle, and tapered roller bearings, catering to industries such as automotive, aerospace, defense, and heavy machinery. With precision engineering and stringent quality standards, manufacturers ensure the performance and durability required for critical applications. Government agencies contract for these manufacturing services to support infrastructure, defense systems, and transportation equipment where reliable bearing components are vital for operational efficiency and safety. The sector is characterized by advanced manufacturing processes, including machining, heat treatment, and assembly, often requiring compliance with military and industry-specific standards.
Industry Classification for NAICS 332991
This U.S. industry comprises establishments primarily engaged in manufacturing ball and roller bearings of all materials.
Breakdown for NAICS 332991
- Manufacture of ball and roller bearings using various materials and methods.
- Serves industries including defense, aerospace, automotive, and heavy machinery.
- Involves precision engineering and quality control to meet strict standards.
- Typically subject to government specifications and certifications such as AS9100.
- Contracting includes fixed-price and IDIQ types with varying contract values.
Included Activities for NAICS 332991
- Machining bearing components to precise dimensions.
- Performing heat treatment and surface finishing processes.
- Assembling ball and roller bearings with quality inspections.
- Testing bearings for durability, load capacity, and performance.
- Complying with military and aerospace specification requirements.
- Packaging and delivering components for government contracts.
- Supporting supply chain logistics and inventory management.
- Implementing quality management systems such as ISO 9001.
Business Types for NAICS 332991
- Precision manufacturing companies specializing in bearings.
- Defense contractors supplying military-grade components.
- Aerospace component manufacturers.
- Small and medium enterprises providing specialized bearing solutions.
- Industrial machinery parts manufacturers.
- Subcontractors offering heat treatment and machining services.
Subcategories for NAICS 332991
- Annular ball bearings manufacturing
- Ball bearings manufacturing
- Bearings, ball and roller, manufacturing
- Cylindrical roller bearings manufacturing
- Flange units, ball or roller bearing, manufacturing
- Linear ball bearings manufacturing
- Linear roller bearings manufacturing
- Needle roller bearings manufacturing
- Pillow blocks with ball or roller bearings manufacturing
- Races, ball or roller bearings, manufacturing
- Roller bearings manufacturing
- Tapered roller bearings manufacturing
- Thrust roller bearings manufacturing
Government Buyers for NAICS 332991
Key government buyers of ball and roller bearings include the Department of Defense, NASA, the Department of Transportation, and the General Services Administration. These agencies require high-quality bearings for military vehicles, aircraft, space exploration equipment, and public transportation infrastructure. Bearings are critical to mission success and safety, making reliable sourcing essential. The defense sector, in particular, demands components that meet strict specifications for durability and performance under extreme conditions. Additionally, agencies managing federal infrastructure projects procure bearings for heavy machinery and industrial applications. Government contracts often prioritize suppliers with proven quality control systems and the ability to deliver precision components on schedule.
Contract Types & Procurement for NAICS 332991
Contracts for ball and roller bearing manufacturing typically include firm-fixed-price, indefinite-delivery/indefinite-quantity (IDIQ), and performance-based contracts. Procurement methods often involve competitive bidding, requests for proposals (RFPs), and small business set-asides. Contract values range widely depending on the scope, from small component orders in the tens of thousands to multi-million-dollar contracts supplying bearings for large defense platforms or infrastructure projects. Long-term supply agreements are common to ensure continuity and reliability. Contracting officers emphasize compliance with technical specifications, quality assurance plans, and timely delivery schedules. Subcontracting opportunities exist for component fabrication and specialized treatments.
Details for NAICS 332991
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