Single- and double-leg gantry cranes are versatile, cost-effective alternatives to a full overhead bridge system, providing the necessary mobility to keep items moving safely throughout a facility without elevated runways or complex roof structures. They can be operated indoors or outdoors, and are easily incorporated into operational flow. Gantry cranes can also be outfitted with rotating hoists, operator cabs, and protective housings to protect
against outdoor exposure.

At T&M Cranes, our standard and custom overhead crane options comply with Crane Manufacturers Association of America, Inc. (CMAA) standards. Since 1974, our family-owned and operated business has served the needs
of the construction, manufacturing, shipping, material handling, and
other industries.

Learn more about our single- and double-leg gantry cranes, how they
are used in different applications, and the benefits of these two
crane configurations.

Single-Leg Gantry Cranes

A single-leg gantry crane has a main beam that is supported on one side by a leg riding on a floor-mounted rail. On the other side, the leg rides on a wall-mounted or similarly elevated rail. Both legs include a wheeled mechanism that allows the gantry system to move back and forth on the rails.
The load is suspended from the main beam with a hook and trolley system that travels back and forth across the beam. The load and gantry unit are positioned perpendicular to each other, which allows for movement in four horizontal directions.

This configuration is well-suited to indoor use and in confined spaces. This space-restricted gantry solution features a capacity of 0 to 50 tons, with a span of 120 ft. and a CMAA Class A-D rating.

  • Applications

    Single-leg gantry cranes are often used for lighter-duty lifting, positioning, and moving of objects and equipment in limited-clearance or narrow spaces or for:

    Lifting or moving equipment for repair or maintenance

    Moving pallets in warehouses or within shipping bays.

    Suspending components and equipment on assembly lines.

  • Advantages

    Single-leg gantry cranes are an excellent choice for moving loads in structures with limited overhead or floor space, or in situations where loads are being moved very close to walls. They are also lighter than double-leg models. Other benefits include:

    Cost-effectiveness.
    Their simple construction makes these cranes more affordable than other models.

    Operational flexibility.
    Offers efficient lifting in high-traffic, confined indoor or outdoor spaces.

    Optimal use of space.
    Requires less floor space and can be placed under existing overhead cranes.

Double-Leg Gantry Cranes

Like single-leg gantry cranes, double-leg models have a main beam with a hook and trolley, the beam and rails are perpendicular to each other for multi-directional movement of the load, and their legs roll along rails.
Unlike a single-leg model, both legs of a double-leg gantry crane are floor mounted. This allows it to support larger, heavier loads; however, it also
takes up more floor space. As a result, double-leg gantry cranes are more likely to be used outdoors or inside larger facilities.

Double-leg gantry cranes can lift up to 50 tons and can support a span of up to 120 or more feet.

Applications

Double-leg gantry cranes are larger and sturdier for heavier loads, longer spans, and heavy use. Some common applications include:

Moving ship engines, hull parts, and other components.

Positioning precast concrete forms, steel beams, structural elements, and
construction equipment.

Loading and unloading shipping containers.

Moving coils, spools, billets, and bulk containers of scrap metal or raw materials in
steel plants.

Advantages

Our double-leg gantry cranes are ideal for industrial environments, including those with high-temperature operating conditions. Their two-leg support design means they can support larger and heavier loads than a single-leg gantry crane. Additional advantages of this design include:

Exceptional stability.
With two legs mounted on ground-level rails, these cranes remain stable, even with unbalanced or oddly-shaped loads

Flexibility.
Their construction design supports a taller overall structure that can lift loads higher than single-girder models.

Efficiency.
The double-girder design offers reliable control and stability for faster movement and shorter cycle times.

Your Trusted Partner for Custom Gantry Crane Solutions

With decades of proven experience, T&M Cranes delivers precision-engineered single- and double-leg gantry cranes designed for exceptional safety and reliability. Space-saving single-leg systems and heavy-duty double-leg systems can both be integrated into industrial workflows in a variety of settings for long-term utility.

Contact our team to learn more about these and all of our cranes, hoists, and customization options, or request a quote to get started today.