Company lists · Data refreshed September 2026

Top 25 Gearbox maintenance companies based in the United States

Name: Gearbox maintenance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 493 companies tracked

RevenueBase identified 493 gearbox maintenance companies headquartered in the United States as of September 2026 and tracks 5,210 professional contacts across them, including 1,744 with verified work emails. Houston is the largest hub.

This list covers gearbox maintenance companies 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

493Companies

5,210Contacts tracked

1,744Verified emails

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The 25 largest gearbox maintenance companies based in the United States

Ranked by team size

Top 25 of 493 gearbox maintenance companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to gearbox maintenance companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Rotating Machinery Services, INC	Indirect evidence	Bethlehem, PA, United StatesHQ checked Sep 20, 2026	201-500	251 contacts →
	Indirect evidence “Rotating Machinery Services (RMS)\| Engineering Reliability in Rotating Equipment Since 1998, Rotating Machinery Services (RMS) has redefined the aftermarket for compressors…” Source: RevenueBase Database · checked Sep 20, 2026
2	JAY Industrial Repair	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 20, 2026	201-500	183 contacts →
	Indirect evidence “Jay Industrial Repair is an industrial service and manufacturing business focused on quality on-time solutions in electric motor and controls sales and services, and in-field…” Source: RevenueBase Database · checked Sep 20, 2026
3	Enprotech	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 20, 2026	201-500	171 contacts →
	Indirect evidence “To keep your production in motion, it takes an experienced partner dedicated to your equipment 24/7.” Source: RevenueBase Database · checked Sep 20, 2026
4	Clipper Windpower	Indirect evidence	Cedar Rapids, IA, United StatesHQ checked Sep 20, 2026	51-200	158 contacts →
	Indirect evidence “Energy drives our world and our economy.” Source: RevenueBase Database · checked Sep 20, 2026
5	Horsburgh & Scott	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 20, 2026	51-200	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 20, 2026
6	Electric Motor & Contracting Co., INC	Indirect evidence	Chesapeake, VA, United StatesHQ checked Sep 20, 2026	201-500	131 contacts →
	Indirect evidence “Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
7	Power Services Group, INC	Partial evidence	Cape Coral, FL, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Partial evidence “Power Services Group (PSG) is the leading US-owned, independent provider of turnkey maintenance, repair, and overhaul solutions for steam and gas turbines.” Source: RevenueBase Database · checked Sep 20, 2026
8	Horner Industrial Group	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	201-500	102 contacts →
	Indirect evidence “For over half a century, Horner Industrial Group has been helping to power your business with industry leading service, quality and value by providing excellence in electrical…” Source: RevenueBase Database · checked Sep 20, 2026
9	Paragon Technologies, INC	Indirect evidence	Warren, MI, United StatesHQ checked Sep 20, 2026	51-200	100 contacts →
	Indirect evidence “The Paragon Companies are a group of premier international one-stop service and repair centers for a wide range of industrial electronic, hydraulic and servo controls.” Source: RevenueBase Database · checked Sep 20, 2026
10	ABS Wind	Partial evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	201-500	97 contacts →
	Partial evidence “ABS Wind specializes in the repair, upgrade, and spare parts supply of critical wind turbine drivetrain components, including gearboxes and mainshafts.” Source: RevenueBase Database · checked Sep 20, 2026
11	Conhagen Rotating Equipment Specialist	Indirect evidence	Kenner, LA, United StatesHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “Conhagen is a comprehensive provider of industrial rotating equipment services, including engineering, field services, shop services, manufacturing, and repairs, allowing us to…” Source: RevenueBase Database · checked Sep 20, 2026
12	HECO	Indirect evidence	Kalamazoo, MI, United StatesHQ checked Sep 20, 2026	51-200	87 contacts →
	Indirect evidence “HECO helps industrial plants utilize more dependable motors and equipment.” Source: RevenueBase Database · checked Sep 20, 2026
13	Bender Ccp, INC	Indirect evidence	Vernon, CA, United StatesHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Bender CCP is one of the leading full service providers of engineered rotating equipment repair and machining services in the US.” Source: RevenueBase Database · checked Sep 20, 2026
14	M&j Valve Services, INC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 20, 2026	51-200	83 contacts →
	Indirect evidence “When your business is on the line, M&J delivers.” Source: RevenueBase Database · checked Sep 20, 2026
15	Aero Accessories	Indirect evidence	Miramar, FL, United StatesHQ checked Sep 20, 2026	51-200	77 contacts →
	Indirect evidence “Aero Accessories provides advanced repair solutions for Next Generation Fuel, Pneumatic, Hydraulic & Electro-Mechanical components.” Source: RevenueBase Database · checked Sep 20, 2026
16	Kiemle-Hankins	Indirect evidence	Perrysburg, OH, United StatesHQ checked Sep 20, 2026	51-200	68 contacts →
	Indirect evidence “Kiemle-Hankins is a leading industrial service and repair company.” Source: RevenueBase Database · checked Sep 20, 2026
17	Turbinepros	Partial evidence	Dayton, MN, United StatesHQ checked Sep 20, 2026	51-200	67 contacts →
	Partial evidence “TurbinePROs is a field service provider offering OCIC, Maintenance, Repair, Overhaul, and Upgrade of all rotating equipment including turbines, generators, pumps, and compressors…” Source: RevenueBase Database · checked Sep 20, 2026
18	PSI Repair Services, INC	Indirect evidence	Livonia, MI, United StatesHQ checked Sep 20, 2026	51-200	64 contacts →
	Indirect evidence “When industrial equipment fails, every minute of downtime costs you money.” Source: RevenueBase Database · checked Sep 20, 2026
19	Hupp Electric Motors	Indirect evidence	Marion, IA, United StatesHQ checked Sep 20, 2026	51-200	56 contacts →
	Indirect evidence “Here at Hupp Electric Motors dedication to quality and complete customer satisfaction makes us the smart choice for all of your motor repair needs.” Source: RevenueBase Database · checked Sep 20, 2026
20	Prime Machine INC	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 20, 2026	51-200	51 contacts →
	Indirect evidence “Prime Machine, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
21	Unico Mechanical Corp	Indirect evidence	Benicia, CA, United StatesHQ checked Sep 20, 2026	51-200	48 contacts →
	Indirect evidence “Unico Mechanical, a premier heavy industrial machine shop and field service company, is a leading provider of a wide range of machine services both locally in Northern California…” Source: RevenueBase Database · checked Sep 20, 2026
22	Etheredge Industrial Services	Indirect evidence	Shreveport, LA, United StatesHQ checked Sep 20, 2026	51-200	46 contacts →
	Indirect evidence “Etheredge Industrial Services has been serving the industrial market since February 1986.” Source: RevenueBase Database · checked Sep 20, 2026
23	Decatur Industrial Electric, INC	Indirect evidence	Decatur, IL, United StatesHQ checked Sep 20, 2026	51-200	41 contacts →
	Indirect evidence “Decatur Industrial Electric provides electro-mechanical repair solutions to a variety of industries throughout the Midwest.” Source: RevenueBase Database · checked Sep 20, 2026
24	GL Power, INC	Indirect evidence	Madison, OH, United StatesHQ checked Sep 20, 2026	51-200	38 contacts →
	Indirect evidence “GL POWER INC.” Source: RevenueBase Database · checked Sep 20, 2026
25	Lubezone, INC	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	51-200	38 contacts →
	Partial evidence “LubeZone is focused on providing the trucking industry with a preventative maintenance package that is designed to get the driver back on the road and out of the shop.” Source: RevenueBase Database · checked Sep 20, 2026

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: gearbox maintenance companies. 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 gearbox maintenance companies.
Partial evidence: Its own public description names part of gearbox maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name gearbox maintenance companies. 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 493 gearbox maintenance companies based in the United States

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Gearbox maintenance companies based in the United States at a glance

As of Sep 20, 2026

33.5%Verified-email coverage

10.6Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

225

11-50

172

51-200

201-500

501-1,000

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 493 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 gearbox maintenance companies, 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 “gearbox maintenance companies”. 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 gearbox maintenance companies), 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 gearbox maintenance companies, 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, 1,744 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 20, 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.

Gearbox maintenance companies by metro

Gearbox maintenance companies in Houston25

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 gearbox maintenance companies, 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 gearbox maintenance companies are there based in the United States?

RevenueBase identified 493 gearbox maintenance companies 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?

Rotating Machinery Services, INC, headquartered in Bethlehem, tops this list with the largest team on record.

Which city has the most gearbox maintenance companies?

Houston leads with 25 headquartered companies, followed by Miami (7) and Cleveland (6).

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 1,744 verified decision-maker contacts tracked across these 493 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 20, 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.