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  • 4 leading manufacturers
  • 39 additional suppliers
  • 21 states and provinces
  • 11 related categories
  • 4 guide sections
Source: IQS Directory database snapshotOur Methodology
Leading manufacturers
Listings in this category's Leading placements, shown first in IQS sequence order.
Additional suppliers
The category's other listings, shown on its Additional Companies page. Counted by listing.
States and provinces
U.S. states and Canadian provinces where the listed companies are located.
Related categories
Other categories IQS links from this one as related products or processes.
Guide sections
Sections in this category's industry guide.
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Gearbox Manufacturers and Companies

Play Gearbox Informational Video
Gearbox Informational Video

IQS Directory is a top industrial directory listing of leading industrial gearbox manufacturers and suppliers. Access our comprehensive index to review and source gearbox manufacturers with preview ads and detailed product descriptions. These gearbox companies can design, engineer and manufacture gearboxes to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these gearbox manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. We are the right resource for your information requirement whether its for a manufacturer of inline gear reduction boxes, inline gearbox reducers, or right angle gear reducers.

Suppliers located in OH, GA, NY +18 more states

Read the gearbox guide
Contents (4 sections)

Leading Gearbox Manufacturers

Location
Certifications

Showing all 4

Certification, declaration and ownership records are on file for 1 of 4 suppliers in this list, from supplier reports IQS reviewed. A supplier without one listed may still hold it.

Leading gearbox manufacturers
Placement No.ManufacturerLocationContactActions
1

DieQua Corporation

DieQua Corporation is your premium source for efficient, precise speed reducers and motion control components. We offer an unparalleled range, including helical bevel, worm, and planetary gearboxes. As a turnkey manufacturer in Bloomingdale, IL, we provide rapid prototyping and custom assembly. Our engineers use a consultative approach to ensure you get the most efficient, reliable design for your specific torque and precision needs.

  • ISO 9001 (Supplier-reported, reviewed Sep 2026)
LocationBloomingdale, IL
View Manufacturer
2

Bison

At Bison, we provide speed reducers designed to support dependable power transmission across a wide range of industrial applications. We focus on delivering solutions that help control output speed, increase torque, and improve the performance of driven equipment.

LocationKent, OH
View Manufacturer
3

Gleason-Avery

At Gleason-Avery, we provide speed reducers designed to support reliable motion control across a wide range of industrial equipment and machinery. We focus on solutions that help manage motor speed, increase torque, and improve operating efficiency where controlled power transmission is essential. Our company serves customers that require dependable components engineered for consistent performance and long service life.

LocationAuburn, NY
View Manufacturer
4

Klauber Machine & Gear Co.

At Klauber Machine & Gear Co., we specialize in providing dependable speed reducers and power transmission solutions designed to meet the demands of industrial and commercial operations. Our company focuses on developing high-quality gear reduction equipment that delivers consistent torque, controlled rotational speed, and efficient mechanical performance.

LocationPacific, MO
View Manufacturer
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Additional Gearbox Companies

The category’s other gearbox companies are listed on their own page, with location, phone and website where each supplier provides them.

View 39 Additional Gearbox Companies

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Quick Answers

How many gearbox manufacturers are listed on IQS Directory?
4 leading manufacturers and 39 additional suppliers.
Where are gearbox manufacturers located?
The listed suppliers are in 21 states: Ohio (5), Georgia (4), New York (4), Wisconsin (4), Illinois (3), Missouri (3), Iowa (2), Massachusetts (2), and 13 more.
How do I get quotes from gearbox suppliers?
Select suppliers in the table and choose Request Quotes. IQS reviews your request and forwards it to every supplier you select.

Gearbox

4 sections

A gearbox (also spelled “gear box”), which is also commonly referred to as a transmission, is a mechanism used to increase torque while simultaneously decreasing the speed of a motor-powered object or system. Typically located at the junction point of a power shaft, it does so by transferring energy from one device to another. Most often, gearboxes are thought of in conjunction with automobiles. They are, of course, used extensively with automobiles, but they can also be paired with other types of vehicles and technology. These include rotary mowers, helicopters and wind turbines.

Design of Gearboxes

An individual gear box is constructed carefully, with a specific purpose in mind. For that reason, every gearbox is built with a specific gear ratio, which supplies it with the correct level of force needed for the task at hand. Sometimes, gearboxes create a right angle change in direction. This feature is particularly valued for the proper function of rotary motors in helicopters. No matter its exact configuration, the construction of a gearbox is, by and large, fixed. The only feature of a gearbox that can be modified after its creation is an adjustment that slows an increase in shaft speed and a related torque reduction.

Gearbox Materials

Gearboxes may be made from a number of different materials, though the most common type of materials from which they are made are steel-based metals like stainless steel. Other common metal materials from which gearboxes may be made include aluminum, iron and brass. In addition, some types of gears and/or gears with particular shapes, such as spur gears, may be made using less durable materials like nylon or polycarbonate. In the end, what material or material type a manufacturer selects to make a gearbox directly correlates to the performance the manufacturer wishes for the gearbox. For example, more durable materials equip a gearbox with the larger torque reduction capabilities and an ability to resist the power of stronger motors, making the gearbox more durable as well. Less durable materials, for the same reasons in reverse, are best suited in the construction of gearboxes that will be paired with low power motors. Another consideration that manufacturers make when constructing a gearbox is its teeth, as the teeth of a gearbox significantly affect its strength and efficiency. A gearbox with straight teeth, for example, is typically only employed in a low-speed application, while a gearbox with helical teeth, which is much stronger and provides much greater efficiency in terms of torque reduction, is much more likely to be purchased for use with a high-speed application.

Types of Gearboxes

Gearboxes are typically divided into three main categories: manual, automatic and continuously variable. Manual gearboxes, also known as manual transmission or stick-shifts, are gearboxes used in automotive applications that shift with the help of an operator. To shift the gear, said operator will use some sort of lever, such as a clutch, brake pedal, movable gear stick or hand lever. Some manual gearboxes allow a driver to shift to any selected gear at any time, while others restrict their movement at one time to only the gear below or the gear above. Automatic gearboxes or automatic transmission (AT), on the other hand, shift gears without the assistance of an operator. Instead, they, as one might assume, shift automatically based on cues given by the vehicle or system itself. Finally, continuously variable gearboxes or transmission (CVT), which also work automatically, shift through a continuous range of different gear ratios, as opposed to a fixed number of gear ratios. Typically, continuously variable gearboxes are found in snowmobiles, golf carts, small tractors, motor scooters and other small motorized vehicles and utility vehicles. Wind turbines are also gearboxes. Through the very slow rotation of the turbines themselves and the large amount of torque generated therein, wind turbines are able to transfer power to electricity generators, which have much faster rotational speeds and lower torque outputs. Because wind turbines, which may be considered large scale gearboxes, contain many different gears and stages, the electricity generator into which their power goes can still offer consistent output, even when the turbine’s rate of rotation inevitably fluctuates.

Things to Consider When Purchasing Gearboxes

For more information on gearboxes, check out the gear box manufacturers and gear box suppliers listed with IQS Directory. Modify your search below by inputting variables like company type, location and certification to find the right match for you. In addition, to save time, submit your inquiry to all the gear box companies you select by using the Request for Quote tool. All of our partners are experienced and reliable, so don’t hesitate to reach out. Get started today!