6-digit U.S. detail
333618
Other Engine Equipment Manufacturing
Description
Establishments in this sector focus on creating specialized engine systems that power heavy machinery, industrial equipment, and agricultural vehicles rather than cars or planes. Their core function involves assembling and producing combustion engines tailored for specific mechanical applications, ranging from construction excavators to factory pumps. Typical business activities include designing unique engine configurations, manufacturing key internal components, conducting rigorous quality testing, and implementing final assembly line processes to ensure reliability and performance standards. These entities are generally operated by medium to large manufacturing firms or specialized contract shops rather than small local businesses. The scale of operation often involves significant capital investment in automated welding and molding technology to handle high-volume production cycles. Scope extends across various industrial sectors, supplying critical power units for mining operations, power generation plants, and large-scale farming equipment. Many operators serve global markets by exporting finished engines or providing parts for major OEMs. Their output represents a vital subset of machinery manufacturing, supporting industries that require robust, off-road capable power sources distinct from automotive or aviation applications.
Hierarchy
| Code | Title | Description |
|---|---|---|
| 33 | Manufacturing 2-digit sector | The Sector as a Whole The Manufacturing sector comprises establishments engaged in the mechanical, physical, or chemical transformation of materials, substances, or components into new products. The assembling of component parts of manufactured products is considered manufacturing, except in cases where the activity is appropriately classified in Sector 23, Construction. Establishments in the Manufacturing sector are often described as plants, factories, or mills and characteristically use power-driven machines and material handling equipment. However, establishments that transform materials or substances into new products by hand or in the worker's home and those engaged in selling to the general public products made on the same premises from which they are sold, such as bakeries, candy stores, and custom tailors, may also be included in this sector. Manufacturing establishments may process materials or may contract with other establishments to process their materials for them. Both types of establishments are included in manufacturing. Selected industries in the Manufacturing sector are comprised solely of establishments that process materials for other establishments on a contract or fee basis. Beyond these dedicated contract manufacturing industries, establishments that process materials for other establishments are generally classified in the Manufacturing industry of the processed materials. The materials, substances, or components transformed by manufacturing establishments are raw materials that are products of agriculture, forestry, fishing, mining, or quarrying as well as products of other manufacturing establishments. The materials used may be purchased directly from producers, obtained through customary trade channels, or secured without recourse to the market by transferring the product from one establishment to another, under the same ownership. The new product of a manufacturing establishment may be finished in the sense that it is ready for utilization or consumption, or it may be semi-finished to become an input for an establishment engaged in further manufacturing. For example, the product of the alumina refinery is the input used in the primary production of aluminum; primary aluminum is the input to an aluminum wire drawing plant; and aluminum wire is the input for a fabricated wire product manufacturing establishment. The subsectors in the Manufacturing sector generally reflect distinct production processes related to material inputs, production equipment, and employee skills. In the machinery area, where assembling is a key activity, parts and accessories for manufactured products are classified in the industry of the finished manufactured item when they are made for separate sale. For example, an attachment for a piece of metalworking machinery would be classified with metalworking machinery. However, component inputs from other manufacturing establishments are classified based on the production function of the component manufacturer. For example, electronic components are classified in Subsector 334, Computer and Electronic Product Manufacturing, and stampings are classified in Subsector 332, Fabricated Metal Product Manufacturing. Manufacturing establishments often perform one or more activities that are classified outside the Manufacturing sector of NAICS. For instance, almost all manufacturing has some captive research and development or administrative operations, such as accounting, payroll, or management. These captive services are treated the same as captive manufacturing activities. When the services are provided by separate establishments, they are classified in the NAICS sector where such services are primary, not in manufacturing. The boundaries of manufacturing and the other sectors of the classification system can be somewhat blurry. The establishments in the Manufacturing sector are engaged in the transformation of materials into new products. Their output is a new product. However, the definition of what constitutes a new product can be somewhat subjective. As clarification, the following activities are considered manufacturing in NAICS: <table width=100%><tr><td width=10%> </td><td><dl><dt style='padding-left: 10px; text-indent: -10px;'>Milk bottling and pasteurizing;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Water bottling and processing;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Fresh fish packaging (oyster<br/> shucking, fish filleting);</dt><dt style='padding-left: 10px; text-indent: -10px;'>Apparel jobbing (assigning<br/> materials to contract<br/> factories or shops for<br/> fabrication or other contract<br/> operations) as well as<br/> contracting on materials<br/> owned by others;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Printing and related activities;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Ready-mix concrete production;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Leather converting;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Grinding lenses to<br/> prescription;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Wood preserving;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Lapidary work for the trade;</dt></dl></td><td width=10%> </td><td><dl><dt style='padding-left: 10px; text-indent: -10px;'>Electroplating, plating, metal<br/> heat treating, and<br/> polishing for the trade;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Fabricating signs and<br/> advertising displays;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Rebuilding or remanufacturing<br/> machinery (i.e., automotive<br/> parts);</dt><dt style='padding-left: 10px; text-indent: -10px;'>Making manufactured homes<br/> (i.e., mobile homes) or<br/> prefabricated buildings,<br/> whether or not assembling/<br/> erecting at the customers'<br/> site;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Ship repair and renovation;</dt><dt style='padding-left: 10px; text-indent: -10px;'>Machine shops; and</dt><dt style='padding-left: 10px; text-indent: -10px;'>Tire retreading.</dt></dl></td><td width=10%> </td></tr></table> Conversely, there are activities that are sometimes considered manufacturing, but which for NAICS are classified in another sector (i.e., not classified as manufacturing). They include: 1. Logging, classified in Sector 11, Agriculture, Forestry, Fishing and Hunting, is considered a harvesting operation; 2. Beneficiating ores and other minerals, classified in Sector 21, Mining, Quarrying, and Oil and Gas Extraction, is considered part of the activity of mining; 3. Constructing structures, assembling prefabricated buildings, and fabricating at the construction site by contractors are classified in Sector 23, Construction; 4. Breaking bulk and reselling in smaller lots, including packaging, repackaging, or bottling products, such as liquors or chemicals; assembling and selling computers on a custom basis; sorting and reselling scrap; mixing and selling paints to customer order; and cutting metals to customer order for resale are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade; and 5. Publishing and the combined activity of publishing and printing, classified in Sector 51, Information, transform information into a product for which the value to the consumer lies in the information content, not in the format in which it is distributed (i.e., the book or software compact disc). |
| 333 | Machinery Manufacturing 3-digit subsector | Industries in the Machinery Manufacturing subsector create end products that apply mechanical force, for example, the application of gears and levers, to perform work. Some important processes for the manufacture of machinery are forging, stamping, bending, forming, and machining that are used to shape individual pieces of metal. Processes, such as welding and assembling are used to join separate parts together. Although these processes are similar to those used in metal fabricating establishments, machinery manufacturing is different because it typically employs multiple metal forming processes in manufacturing the various parts of the machine. Moreover, complex assembly operations are an inherent part of the production process. In general, design considerations are very important in machinery production. Establishments specialize in making machinery designed for particular applications. Thus, design is considered to be part of the production process for the purpose of implementing NAICS. The NAICS structure reflects this by defining industries and industry groups that make machinery for different applications. A broad distinction exists between machinery that is generally used in a variety of industrial applications (i.e., general purpose machinery) and machinery that is designed to be used in a particular industry (i.e., special purpose machinery). Three industry groups consist of special purpose machinery--Agriculture, Construction, and Mining Machinery Manufacturing; Industrial Machinery Manufacturing; and Commercial and Service Industry Machinery Manufacturing. The other industry groups make general purpose machinery: Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing; Metalworking Machinery Manufacturing; Engine, Turbine, and Power Transmission Equipment Manufacturing; and Other General Purpose Machinery Manufacturing. |
| 3336 | Engine, Turbine, and Power Transmission Equipment Manufacturing 4-digit industry group | Industries in the Machinery Manufacturing subsector create end products that apply mechanical force, for example, the application of gears and levers, to perform work. Some important processes for the manufacture of machinery are forging, stamping, bending, forming, and machining that are used to shape individual pieces of metal. Processes, such as welding and assembling are used to join separate parts together. Although these processes are similar to those used in metal fabricating establishments, machinery manufacturing is different because it typically employs multiple metal forming processes in manufacturing the various parts of the machine. Moreover, complex assembly operations are an inherent part of the production process. In general, design considerations are very important in machinery production. Establishments specialize in making machinery designed for particular applications. Thus, design is considered to be part of the production process for the purpose of implementing NAICS. The NAICS structure reflects this by defining industries and industry groups that make machinery for different applications. A broad distinction exists between machinery that is generally used in a variety of industrial applications (i.e., general purpose machinery) and machinery that is designed to be used in a particular industry (i.e., special purpose machinery). Three industry groups consist of special purpose machinery--Agriculture, Construction, and Mining Machinery Manufacturing; Industrial Machinery Manufacturing; and Commercial and Service Industry Machinery Manufacturing. The other industry groups make general purpose machinery: Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing; Metalworking Machinery Manufacturing; Engine, Turbine, and Power Transmission Equipment Manufacturing; and Other General Purpose Machinery Manufacturing. |
| 33361 | Engine, Turbine, and Power Transmission Equipment Manufacturing 5-digit NAICS industry | This industry comprises establishments primarily engaged in manufacturing turbines, power transmission equipment, and internal combustion engines (except automotive gasoline and aircraft). Illustrative Examples: Clutches and brakes (except electromagnetic industrial controls, motor vehicle) manufacturing Diesel and semidiesel engines manufacturing Electric outboard motors manufacturing Internal combustion engines for hybrid drive systems (except automotive) manufacturing Plain bearings (except internal combustion engine) manufacturing Power transmission pulleys manufacturing Plain bushings (except internal combustion engine) manufacturing Speed changers (i.e., power transmission equipment) manufacturing Speed reducers (i.e., power transmission equipment) manufacturing Turbine generator set units manufacturing Universal joints (except aircraft, motor vehicle) manufacturing |
| 333618 | Other Engine Equipment Manufacturing 6-digit U.S. detail | Establishments in this sector focus on creating specialized engine systems that power heavy machinery, industrial equipment, and agricultural vehicles rather than cars or planes. Their core function involves assembling and producing combustion engines tailored for specific mechanical applications, ranging from construction excavators to factory pumps. Typical business activities include designing unique engine configurations, manufacturing key internal components, conducting rigorous quality testing, and implementing final assembly line processes to ensure reliability and performance standards. These entities are generally operated by medium to large manufacturing firms or specialized contract shops rather than small local businesses. The scale of operation often involves significant capital investment in automated welding and molding technology to handle high-volume production cycles. Scope extends across various industrial sectors, supplying critical power units for mining operations, power generation plants, and large-scale farming equipment. Many operators serve global markets by exporting finished engines or providing parts for major OEMs. Their output represents a vital subset of machinery manufacturing, supporting industries that require robust, off-road capable power sources distinct from automotive or aviation applications. |
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Classification References
- 01Manufacturing gasoline motor vehicle engines and motor vehicle transmissions--are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing;
- 02Manufacturing gasoline aircraft engines and aircraft transmissions--are classified in Industry 33641, Aerospace Product and Parts Manufacturing;
- 03Manufacturing turbine and turbine generator set units--are classified in U.S. Industry 333611, Turbine and Turbine Generator Set Units Manufacturing;
- 04Manufacturing speed changers and industrial high-speed drives and gears--are classified in U.S. Industry 333612, Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing; and
- 05Manufacturing mechanical power transmission equipment (except motor vehicle and aircraft)--are classified in U.S. Industry 333613, Mechanical Power Transmission Equipment Manufacturing.
Index Items
Diesel and semidiesel engines manufacturing
Electric outboard motors manufacturing
Engines, diesel and semidiesel, manufacturing
Engines, diesel locomotive, manufacturing
Engines, internal combustion (except aircraft, nondiesel automotive), manufacturing
Engines, natural gas, manufacturing
Gasoline engines (except aircraft, automotive, truck) manufacturing
Governors, diesel engine, manufacturing
Governors, gasoline engine (except automotive), manufacturing
Internal combustion engines (except aircraft, nondiesel automotive, nondiesel truck) manufacturing
Internal combustion engines for hybrid drive systems (except automotive) manufacturing
Locomotive diesel engines manufacturing
Marine engines manufacturing
Motors, outboard, manufacturing
Natural gas engines manufacturing
Outboard motors manufacturing
Semidiesel engines manufacturing
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Item.com Tools
External Resources
Census.gov NAICS Detail
Official US Census Bureau definition and scope for NAICS 333618.
American Engine and Generator Institute
Trade association providing standards, resources, and news for the engine and generator manufacturing sector.
U.S. Energy Information Administration
Government database featuring historical production and employment statistics specifically for other engine equipment manufacturing.
North American Industry Classification System Directory
Official Census Bureau directory allowing users to verify the 333618 code and access specific industry definition details.
