Company lists · Data refreshed September 2026
Top 25 Aircraft gearbox manufacturers based in the United States
RevenueBase identified 114 aircraft gearbox manufacturers headquartered in the United States as of September 2026 and tracks 44,929 professional contacts across them, including 2,800 with verified work emails. Miami is the largest hub.
This list covers aircraft gearbox manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest aircraft gearbox manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 32,494 contacts → | ||||
Partial evidence “GE Aerospace is a world-leading provider of jet and turboprop engines, components and integrated systems for commercial, military, business and general aviation aircraft.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,310 contacts → | ||||
Partial evidence “TRIUMPH designs, engineers, manufactures, repairs and overhauls a broad portfolio of aviation and industrial components, accessories, subassemblies, systems.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,834 contacts → | ||||
Indirect evidence “Chromalloy is a leading provider of engineering, manufacturing and service for the aerospace, aero-derivative, and energy / industrial gas turbine aftermarket.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,413 contacts → | ||||
Indirect evidence “Headquartered in Tulsa and employing 2,500 people across multiple, strategically-located operations and customer support facilities around the world, NORDAM is one of the largest…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,083 contacts → | ||||
Indirect evidence “Barnes Aerospace is a premier provider for the full life-cycle supply and repair of complex aero-engine components from fan to exhaust.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 819 contacts → | ||||
Indirect evidence “Met 3200 medewerkers en 7 vestigingen in Nederland leveren de bedrijven van GKN Fokker technologische geavanceerde vliegtuigsystemen, onderdelen en geïntegreerde diensten en…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 599 contacts → | ||||
Indirect evidence “Unison, a GE Aerospace company, is the leading global supplier of complex gas turbine engine components and electrical & mechanical systems.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 366 contacts → | ||||
Partial evidence “Northstar Aerospace is a leading manufacturer of components and assemblies to the global aerospace industry.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 241 contacts → | ||||
Indirect evidence “Hartzell Propeller Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 226 contacts → | ||||
Indirect evidence “TransDigm Group Incorporated (NYSE: TDG), through its wholly owned subsidiaries, including TransDigm Inc, is a leading global designer, producer and supplier of highly engineered…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 193 contacts → | ||||
Indirect evidence “Applied Aerospace & Defense (Applied) is a public company delivering advanced design, engineering, and vertically integrated manufacturing solutions for leading and next…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 164 contacts → | ||||
Indirect evidence “Our Lufkin Gears brand bring a deep history of industry-leading technology to demanding high-speed mechanical-drive, turbo machinery, and marine-propulsion applications.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 146 contacts → | ||||
Partial evidence “Horsburgh & Scott, founded in 1886, is one of the world's leading providers of custom industrial gears and gearboxes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 114 contacts → | ||||
Indirect evidence “CEF Industries is an Aerospace qualified full service manufacturing company including marketing/sales, customer service, design engineering, assembly, test and customer support.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 110 contacts → | ||||
Partial evidence “AGSE is a global leader in the original design and manufacture of innovative aerospace ground support equipment and tooling.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 95 contacts → | ||||
Partial evidence “Aero Gear was founded in 1982 as a company that would provide solutions-focused expertise in the design, engineering and manufacturing of gears and gearbox assemblies for the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 93 contacts → | ||||
Partial evidence “APS is a global leader in aircraft propeller system maintenance services, aerospace manufacturing and airframe trading.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 69 contacts → | ||||
Indirect evidence “Turbopower offers more than 50-years of experience providing value-added engine and component repair and overhaul services to a worldwide fleet of military, commercial, and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 65 contacts → | ||||
Indirect evidence “As an ISO 9001 registered company with an international reputation for superior quality, Brad Foote Gear Works, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 61 contacts → | ||||
Partial evidence “ES3 is an aerospace engineering company specializing in the design, development, and manufacture of landing gear systems.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 60 contacts → | ||||
Partial evidence “With history dating to OCG manufactures large, high-precision gears that are designed to meet a wide range of requirements for the most challenging applications in the oil and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 59 contacts → | ||||
Partial evidence “If you have requirements for high performance gears (spur, helical or spiral bevel), splined shaft, housings, details or complete gearboxes, Chardam Gear Company can fulfill your…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 57 contacts → | ||||
Indirect evidence “Riley Gear Corporation develops and produces precision gears, custom gear boxes, and other power transmission components.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 53 contacts → | ||||
Indirect evidence “Celebrating its 50th anniversary in 2019, Air Industries Machining Corporation has evolved from a machine shop into a supplier of sophisticated sub-assemblies for the aerospace…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 44 contacts → | ||||
Indirect evidence “Rhinestahl has been delivering on our clients’ toughest challenges since 1967.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: aircraft gearbox manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names aircraft gearbox manufacturers.
- Partial evidence
- Its own public description names part of aircraft gearbox manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name aircraft gearbox manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 114 aircraft gearbox manufacturers based in the United States
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Aircraft gearbox manufacturers based in the United States at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 114 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among aircraft gearbox manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “aircraft gearbox manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names aircraft gearbox manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among aircraft gearbox manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,800 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names aircraft gearbox manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many aircraft gearbox manufacturers are there based in the United States?
RevenueBase identified 114 aircraft gearbox manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
GE Aerospace, headquartered in Cincinnati, tops this list with the largest team on record.
Which city has the most aircraft gearbox manufacturers?
Miami leads with 6 headquartered companies, followed by Cleveland (3) and Tulsa (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,800 verified decision-maker contacts tracked across these 114 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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