Company lists · Data refreshed September 2026
Top 25 Internal gear pump manufacturers worldwide
RevenueBase identified 589 internal gear pump manufacturers worldwide as of September 2026 and tracks 8,330 professional contacts across them, including 1,999 with verified work emails. India is the largest market and Ahmedabad the largest hub.
This list covers internal gear pump manufacturers worldwide, 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. Country and city lists for internal gear pump manufacturers follow the table.
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 internal gear pump manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 411 contacts → | ||||
Strong evidence “We are an international company specialized in the production of gear reducers and gearmotors since 1953.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 341 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 274 contacts → | ||||
Partial evidence “For more than 160 years, GD Energy Products has pushed the industry forward with innovative pump designs, advanced manufacturing processes and a team dedicated to doing what’s…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 236 contacts → | ||||
Strong evidence “Concentric is one of the world’s leading pump manufacturers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 208 contacts → | ||||
Strong evidence “Hayward Tyler designs, manufactures and services performance-critical electric motors and pumps to meet the most demanding applications, as both an OEM supplier and trusted…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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. | |||||
| 7 | 151 contacts → | ||||
Partial evidence “Precipart is a global company engaged in the engineering, design and manufacture of high precision custom solutions.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 147 contacts → | ||||
Strong evidence “HYDRO LEDUC is a specialist in the design and manufacture of piston pumps, hydraulic motors, hydropneumatic accumulators,and customized hydraulic components satisfying customer…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 142 contacts → | ||||
Partial evidence “Leistritz is one of the pioneers in the field of screw pumps.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 131 contacts → | ||||
Strong evidence “Nichols Portland manufactures pumping elements and pump assemblies for a wide range of applications within the automotive, on/off highway and industrial markets.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 103 contacts → | ||||
Strong evidence “Designer & manufacturer of special, tailor-made, high technology pumps for process and wastewater industry.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 92 contacts → | ||||
Indirect evidence “The Leading Force Behind Liquids!” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 86 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 86 contacts → | ||||
Indirect evidence “Since the end of the 40s, last century, Bezares SA has charted a path from a small workshop in Madrid to a global powerhouse in the hydraulic systems sector, serving over 100…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 78 contacts → | ||||
Strong evidence “Permco is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 75 contacts → | ||||
Partial evidence “Unibloc Hygienic Technologies is an industry leader in precision-engineered positive displacement pumps, Air-Operated Double Diaphragm pumps and drum pumps, as well as valves…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 64 contacts → | ||||
Strong evidence “Rotary Power specialises in the design, development and manufacture of hydraulic pumps and motors.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 57 contacts → | ||||
Partial evidence “Settima Meccanica was established in 1978, with the aim of producing high technology three screw pumps for the lift & elevators industry, capable of minimizing noise emissions and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 54 contacts → | ||||
Indirect evidence “High pressure technology - Innovative URACA Hochdruckpumpen nach Maß.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 52 contacts → | ||||
Strong evidence “Based in Cape Town, South Africa, Gear Pump Manufacturing (GPM) manufactures a complete range of internationally interchangeable commercial components for Bearing gear pumps…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 47 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 43 contacts → | ||||
Indirect evidence “ZET Redüktör Sanayi ve Ticaret A.Ş.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 42 contacts → | ||||
Strong evidence “Leading Manufacturer of positive displacement screw pumps and gear pumps - single screw pumps, twin screw pumps, three screw pumps, external gear pumps, internal gear pumps…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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. | |||||
| 25 | 37 contacts → | ||||
Indirect evidence 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: internal gear pump 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 internal gear pump manufacturers.
- Partial evidence
- Its own public description names part of internal gear pump manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name internal gear pump 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 589 internal gear pump manufacturers worldwide
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Internal gear pump manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 internal gear pump 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.
- Coverage
- Every country. Country and city lists for internal gear pump manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “internal gear pump 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 internal gear pump 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 internal gear pump manufacturers, and records with no verified work email.
- 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, 1,999 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.
Internal gear pump manufacturers by location
4 lists · largest firstEvery Internal gear pump manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 internal gear pump 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 internal gear pump manufacturers are there worldwide?
RevenueBase identified 589 internal gear pump manufacturers worldwide 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?
Rossi SPA, headquartered in Modena, tops this list with the largest team on record.
Which country has the most internal gear pump manufacturers?
India leads with 144 companies, followed by the United States (59) and Italy (51). Every internal gear pump manufacturers list by country and city is linked on this page.
Which city has the most internal gear pump manufacturers?
Ahmedabad leads with 23 headquartered companies, followed by Bangalore (8) and Ningbo (7).
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 1,999 verified decision-maker contacts tracked across these 589 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.