Custom Gear Reducers and Speed Reducers

What Is a Custom Gear Reducer?

A custom gear reducer is a gearbox configured or engineered for a specific application instead of selected directly from a standard catalog. Customization ranges from small changes to a standard unit, such as a special shaft or ratio, to fully engineered speed reducers designed around a single machine. Many custom units are based on proven standard platforms, allowing manufacturers to modify only the components the application requires. For standard designs, browse our gear reducers.

A custom gear reducer is the gearbox alone. If you need a custom motor and gearbox as one integrated unit, see our custom gear motors.

What Can Be Customized

Customization options vary by manufacturer. Depending on the vendor and gearbox design, options can include:

Gearing and Ratio

Non-standard ratios, gear types, and numbers of stages to reach a specific output speed and torque, including low-speed, high-torque designs.

Housing and Size

Housings sized and shaped to fit existing equipment, including fabricated welded steel housings for large gearboxes beyond standard catalog sizes.

Shafts and Mounting

Special input and output shafts, hollow bores, flanges, foot patterns, and mounting positions to match the driven machine.

Bearings and Seals

Heavy-duty bearing arrangements for high radial or axial loads, and seals selected for dust, water, or high-temperature environments, where supported by the gearbox design.

Lubrication and Cooling

Oil bath or forced lubrication systems, and cooling fans or oil coolers for continuous duty at high power.

Materials and Finishes

Housing materials, hardened and ground gearing, and coatings selected for the operating environment.

Fabricated Welded Gear Reducers

Large custom speed reducers are often built with fabricated welded steel housings instead of cast housings. Welded construction makes it practical to produce very large or one-off gearboxes in custom shapes, with high rigidity to support heavy loads. These units are common in steel mills, cement plants, and other heavy industries where standard gearboxes aren’t large enough. For standard heavy-duty designs, see our parallel shaft gear reducers.

Industries We Serve

• Steel: rolling mill drives, roll tables, and heavy conveyors

• Cement: kiln drives, mills, and crushers

• Food and agro-food processing: mixers, presses, and processing lines

• Pulp and paper: paper machine and roll drives

• Lifting equipment: hoists, winches, and cranes

Custom vs. Standard Gear Reducers

A standard gear reducer is usually the faster and less expensive choice when one fits. A custom gear reducer makes sense when no standard ratio, size, or mounting fits the machine, when the operating environment requires special materials or seals, or when an OEM machine needs a gearbox optimized for it. Limited modifications to an existing design can be more economical than a fully engineered unit, and pricing and lead times depend on the required changes, engineering work, testing, and order quantity.

How the Custom Gear Reducer Process Works

1. Share Your Requirements

Send us your speed, torque, power, mounting, duty cycle, and environment, plus drawings or photos of any existing unit.

2. Vendor Review

We share your requirements with vendors that offer custom gear reducers, and their engineering teams match them to a standard platform or a custom design.

3. Proposal and Drawings

You receive a quote with the proposed configuration and, where the manufacturer provides them, dimensional drawings for approval.

4. Production and Delivery

After approval, the gear reducer is built to the agreed specification and shipped.

Information to Include in Your Request

• Input power and speed, required output speed or ratio, continuous output torque, and peak torque

• Starting conditions, reversing frequency, and load characteristics

• Duty cycle and hours of operation per day

• Shaft arrangement, mounting style, and any radial or axial loads

• Operating environment, such as temperature, dust, moisture, or washdown

• Quantity, and drawings, photos, or the nameplate of any existing unit

Custom Gear Reducer Manufacturers

HVH Industrial Solutions is an authorized distributor of Fachini, Rossi, WITTENSTEIN, GAM, Nidec DTC, and Cleveland Gear, and many other world-class manufacturers that offer custom gear reducers. We work closely with their engineering teams to provide superior customer service and engineering support.

Frequently Asked Questions

Who can supply a heavy-duty custom speed reducer?

HVH Industrial sources heavy-duty custom speed reducers through vendors that design and build them for steel, cement, paper, and other heavy industries. Send us your requirements, and our team will coordinate with the right manufacturer.

What is the difference between a custom gear reducer and a custom gear motor?

A custom gear reducer is the gearbox alone, which connects to a separate motor. A custom gear motor combines the motor and gearbox in one integrated unit.

Is a custom gear reducer much more expensive than a standard one?

Not necessarily. A reducer with limited modifications to an existing design may cost less than a fully engineered unit. Pricing depends on the components, engineering requirements, testing, and order quantity.

What is the lead time for a custom gear reducer?

It depends on the vendor, the degree of customization, and the order quantity. Modified standard units are typically faster than fully engineered designs. We’ll share the vendor’s estimated lead time with your quote.

Where does HVH supply custom gear reducers?

We supply custom gear reducers throughout the United States and to customers in Canada, Mexico, and parts of South America. Send us your location with your request, and our team will confirm pricing, availability, and shipping.

Request a Custom Gear Reducer Quote

Have an application that standard gearboxes can’t handle? Send us your requirements, and our team will work with vendors that offer custom gear reducers to find a solution that fits your machine.

If you have any questions, write to us via live chat, call us, or send us a quote request. Our team is always ready to help you.