Company lists · Data refreshed September 2026
Top 25 Micro gear manufacturers based in the United States
RevenueBase identified 221 micro gear manufacturers headquartered in the United States as of September 2026 and tracks 4,261 professional contacts across them, including 1,536 with verified work emails. Madison Heights is the largest hub.
This list covers micro gear 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 30, 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 micro gear manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 750 contacts → | ||||
Partial evidence “Gleason is a global leader in gear technology.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 407 contacts → | ||||
Indirect evidence “Portescap, a proud member of Regal Rexnord, excels in addressing critical motion challenges with premium miniature electronic motors and components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 164 contacts → | ||||
Partial 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 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 121 contacts → | ||||
Partial evidence “Cone Drive engineers and manufactures gearing solutions for precision motion control and mission critical applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 112 contacts → | ||||
Strong evidence “Harmonic Drive LLC designs and manufactures precision servo actuators, gearheads and gear component sets.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 90 contacts → | ||||
Indirect evidence “Unlock precision and reliability with Schafer Industries!” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 81 contacts → | ||||
Partial evidence “Winsmith manufactures gearing solutions for a wide range of applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 70 contacts → | ||||
Strong evidence “Partnering with Groschopp means working with a small electric motor and gear motor manufacturer that strives for the American standard of quality.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 65 contacts → | ||||
Partial evidence “As an ISO 9001 registered company with an international reputation for superior quality, Brad Foote Gear Works, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 61 contacts → | ||||
Indirect evidence “Plastics Injection Molding, Mold Making and Engineering Services company specializing in ultra high precision molded parts for various industries including medical devices…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 60 contacts → | ||||
Strong 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 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 57 contacts → | ||||
Partial evidence “Riley Gear Corporation develops and produces precision gears, custom gear boxes, and other power transmission components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 47 contacts → | ||||
Indirect evidence “Bourn & Koch, Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 43 contacts → | ||||
Partial evidence “Delta Gear is committed to being World Class.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 37 contacts → | ||||
Strong evidence “Original Equipment Manufacturer of micro gear pumps and other fluid components and systems since 2002.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 34 contacts → | ||||
Strong evidence “Milwaukee Gear is a world-class manufacturer of custom gearboxes and components, selling to OEM market leaders requiring highly engineered harden and ground gears to exacting…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 31 contacts → | ||||
Strong evidence “Croix Gear, located in Hudson, Wisconsin, manufactures custom gears for a wide range of industries and OEMs.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 31 contacts → | ||||
Partial evidence “Atlantic Sintered (formerly Capstan Atlantic) is an employee-owned leading producer of precision Powdered Metal gears, sprockets and complex structural components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 31 contacts → | ||||
Strong evidence “Specializing in the manufacture of precision spur gears, helical gears and worm gears.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 contacts → | ||||
Indirect evidence “MOVING THE WORLD FOR 100 YEARS We are proud of our past, but looking forward to our future.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Partial evidence “For over 70 years, Supreme Gear has served industries that are vital to the prosperity of countries across the globe, including aerospace, defense, automotive, marine, medical and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Strong evidence “IDC is the most innovative and service oriented custom gear manufacturer and reducer repair facility in the United States.” Source: RevenueBase Database · checked Sep 30, 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: micro gear 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 micro gear manufacturers.
- Partial evidence
- Its own public description names part of micro gear manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name micro gear 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 221 micro gear manufacturers based in the United States
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Micro gear manufacturers based in the United States at a glance
As of Sep 30, 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 221 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 micro gear 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 “micro gear 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 micro gear 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 micro gear 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, 1,536 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 30, 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 micro gear 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 micro gear manufacturers are there based in the United States?
RevenueBase identified 221 micro gear 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?
Gleason Corporation, headquartered in Rochester, tops this list with the largest team on record.
Which city has the most micro gear manufacturers?
Madison Heights leads with 4 headquartered companies, followed by Bessemer City (3) and Canton (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 1,536 verified decision-maker contacts tracked across these 221 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 30, 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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