About Superior Gearbox Company
Superior Gearbox Company has been manufacturing high-performance gear drives since 1975. Headquartered in Stockton, Missouri, we are proud to produce all our products in the United States. Our gear drives are built to deliver consistent quality and durability across a wide range of industries. Every gearbox that leaves our facility reflects decades of experience, precision-focused production, and an understanding of real-world mechanical demands.
Our operations are anchored by high tolerance machining processes that provide precision down to the smallest detail. This allows us to build gear systems that operate efficiently under pressure, delivering long-term value to customers across agriculture, material handling, mining, and construction. As a domestic manufacturer, we offer short lead times, no surprise import tariffs, and direct access to technical support.
Over Four Decades of Quality Manufacturing
Superior Products
Our drives include right angle, bevel, worm gear and spindle for various types of on and off-road applications. Superior can also custom design gear drives to meet even the most unique situations…taking products from prototype to final testing.
Superior Advantage
Our methods of manufacturing, utilizing the most up-to-date engineering software in the gear drive industry, enables Superior to produce consistent, yet economical products that deliver excellent service during years of use.
Superior Service
With Superior Gearbox Company you can count on attention to detail, customer intensive service and quality control…strengths that have grown our company over the many years we have been in business. Every product leaving our factory has experienced a barrage of inspection and testing procedures that ensure a Superior gearbox every time.
Our Product Lines
- Bevel Gear Drives
Bevel gear drives from Superior Gearbox are engineered for right-angle power transmission applications that demand quiet, efficient, and reliable operation. These drives are commonly used in agricultural and industrial machinery where strength and precision are required. Our bevel gear drives are available in various input and output configurations to meet specific application needs.
Each unit is produced with exacting tolerances and inspected thoroughly to verify performance consistency. Whether for rotary cutters, conveyors, or spreaders, our bevel gear drives are trusted to perform in tough environments.
- Worm Gear Boxes
Our worm gear boxes are built for torque-intensive settings and are offered in both low input speed and industrial configurations. These drives offer a compact solution with high gear reduction, making them ideal for applications with space constraints or heavy-duty operational demands.
Our Worm gear drives are manufactured to deliver smooth, quiet operation with minimal maintenance requirements. Their simple yet durable design makes them a reliable option for clients across multiple sectors.
- Custom Gearbox Solutions
As custom gearbox manufacturers, we develop gear drive systems that align with specific operational requirements. Whether it’s a special mounting configuration, gear ratio, or environmental condition, we collaborate with engineers to create the right solution. Our team supports every phase of development, from initial concept through prototyping and testing.
By keeping engineering, machining, and assembly under one roof, we maintain full control of the process and can respond quickly to changes or challenges. This capability is especially valuable for OEMs looking for precise integration and consistency across equipment lines.
Industry Applications
Superior Gearbox products are built for reliability across a wide range of equipment. Our gear systems are trusted by machinery manufacturers and maintenance teams across the following industries:
- Agriculture: From rotary cutters to hay handling equipment, our gear drives stand up to the wear and stress of fieldwork.
- Material Handling: We supply drive systems for conveyors, hoists, and positioning equipment used in warehouses and production facilities.
- Mining: Designed to operate in abrasive and high-load environments, our gearboxes are built for long life with minimal servicing.
- Construction: Gear drives from Superior Gearbox power mixers, compactors, and other construction equipment where reliability is key.
Across each of these industries, our gear drives are built to perform through harsh weather, vibration, and continuous use.
American Manufacturing & Tariff Advantage
Superior Gearbox is a U.S.-based manufacturer committed to supporting American industry. By producing all gear drives in Missouri, we eliminate the uncertainty tied to overseas production and foreign trade policies. Our customers avoid import duties and tariffs that can inflate costs unpredictably.
Being a domestic manufacturer also means faster shipping and easier communication. Clients benefit from consistent lead times and the ability to speak directly with our engineers and technical staff. This gives purchasing teams and project managers more control and confidence throughout procurement and installation.
The impact of tariffs on imported mechanical components has made domestic sourcing more important than ever. At Superior Gearbox, we’re positioned to deliver both quality and cost advantages without relying on offshore production.
Why Choose Superior Gearbox
Customers choose Superior Gearbox for our experience, precision, and unwavering commitment to quality.
We deliver gearboxes that perform exactly as expected—on time and without the guesswork. Every product is built to meet or exceed expectations, and our customers trust us for honest answers and long-term support. Here’s what sets us apart:
Over 45 Years of Manufacturing Experience
High-Tolerance Machining for Exact Fit and Smooth Operation
Domestic Production to Avoid Tariffs and Reduce Lead Times
ISO-Based Quality Management Systems
Expert Support from a Team That Understands Application Challenges
Aftermarket Support
Our commitment doesn’t end at delivery. Through Superior Gearbox Direct, we offer fast access to replacement parts, repair kits, seals, and bearings. This platform allows customers to maintain and repair equipment using original parts that match the specs of the gearboxes already in service.
From agricultural operators needing a new output seal to maintenance teams replacing bearings in high-load conveyors, Superior Gearbox Direct simplifies the service process. Our online portal makes it easy to identify and order the right components with confidence.
American-Made Gearboxes Built to Last
Whether you’re building new equipment or maintaining an existing system, Superior Gearbox has the engineering and production expertise to meet your needs. Contact us to discuss your application, request a custom quote, or download technical specifications.
Our team is ready to assist with product selection, customization, and troubleshooting. Choose Superior Gearbox Company for precision-built gear drives made in the USA.