What exactly is a Semi Gantry Crane and how does it differ from a full gantry crane?

A Semi Gantry Crane is a type of overhead lifting system that features one leg running on a floor-level rail or track, while the opposite side of the bridge is supported by a runway beam attached to the building structure or an elevated rail, rather than having two legs running on ground-level rails. This asymmetric design distinguishes it from a full gantry crane, which has legs on both sides that travel along rails or wheels at floor level. In a semi gantry configuration, one end of the bridge beam is mounted to a building's column or wall via an end truck that runs along an elevated runway, while the other end is supported by a leg with wheels that travel on a rail embedded in the floor.

What are the typical lifting capacities and spans available for Semi Gantry Cranes?

Semi Gantry Cranes are available in a wide range of lifting capacities to suit various industrial needs, with common models typically ranging from 3 tons up to 20 tons, although heavier-duty versions can be engineered to handle loads of 30 tons or more for specialized applications. The span, or the distance between the runway rails, is highly customizable and generally falls between 6 meters and 20 meters, depending on the building dimensions and the operational area that needs to be covered. Lifting heights can also vary considerably, often ranging from 3 meters to 12 meters or higher, based on the clearance available in the facility and the vertical reach required for specific handling tasks. Because these cranes are often custom-engineered to fit specific facility layouts, manufacturers typically work closely with buyers to determine the optimal dimensions that maximize coverage and efficiency within the available space.

What are the main advantages of choosing a Semi Gantry Crane over other crane types?

The Semi Gantry Crane offers a compelling set of advantages that make it an attractive choice for many facilities, chief among them being its excellent space efficiency. By utilizing the building structure to support one side of the crane, it significantly reduces the amount of floor space consumed by support legs and rails, freeing up valuable ground area for storage, workstations, or vehicle movement. This design also tends to be more cost-effective than a full gantry crane, as it requires less structural steel and fewer floor-level rails, while still providing robust lifting performance that rivals traditional bridge cranes. Furthermore, the semi gantry configuration offers greater flexibility in layout compared to a standard overhead bridge crane, as it can be installed in buildings where wall-mounted runway beams are already in place or where floor space is at a premium, making it a practical solution for retrofitting existing facilities.

Semi Gantry Crane | Single & Double Girder

Single Girder Semi Gantry Crane

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For customized products, please fill out information and submit the form.

Capacity:

4-25 ton (customizable)

Lifting Height:

10-12m (customizable)

Voltage/Hertz:

(customizable)

Working Class:

Span:

18-35 m (customizable)

Apply: Semi-gantry cranes are mainly used in steel, forest products, intermodal, biomass/pellet, concrete and many other industries.

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Introduction

Technical Data

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PRODUCT INTRODUCTION

The Semi Gantry Crane is a versatile material handling solution that combines features of both overhead bridge cranes and full gantry cranes. Unlike a full gantry crane which has legs on both sides running on floor-level rails, the semi gantry crane has one leg running on a floor track while the opposite side runs on an overhead runway beam attached to the building structure. This unique design makes it an ideal choice for facilities where one side of the crane runway can be supported by an existing building wall or column, while the other side requires floor-mounted mobility."

TECHNICAL DATA

Parameter	Specification	Parameter	Specification
Rated Loading Capacity	4-25T (customizable)	Max. Lifting Height	10-12M (customizable)
Warranty	1 Year	Machinery Test Report	Provided
Video Outgoing Inspection	Provided	Core Components	Engine, Gearbox, Motor
Span	18-35 m	Place of Origin	Henan, China
Weight (KG)	1,600 kg	Application	Outdoor
Control Method	Remote Control, pendant control, cabin control	Usage	Workshop, Workstation, Construction Application
Power Source	(customizable)	After Warranty	Field maintenance and repair service
After-sales Service Provided	Field installation, commissioning and training	Working System	A3

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APPLICATION

1.This crane is widely used in loading docks and truck bays, where the overhead runway side attaches to the building wall or roof structure, and the floor leg runs along a track at ground level, allowing the crane to move along the dock to load and unload trucks, flatbeds, or shipping containers with ease.

2.It is essential in steel service centers and metal fabrication shops, where long bars, plates, or structural steel must be moved from storage racks to saws, presses, or welding stations, and one side of the crane can be supported by existing column structures for cost savings.

3.The crane is ideal for outdoor storage yards and scrapyards, where the overhead side is anchored to a building or canopy structure, while the floor leg moves along a rail embedded in concrete, handling scrap metal, pipes, concrete blocks, or timber in semi-weather-protected areas.

4.In manufacturing plants with lean-to extensions or attached warehouses, this crane bridges between indoor and semi-outdoor work zones, moving molds, dies, or heavy components from indoor production lines to outdoor staging or truck-loading areas without transferring loads between different cranes.

5.Additional applications include recycling facilities, paper mills, and foundries, where the semi gantry design allows the crane to serve both indoor processing equipment and outdoor raw material piles or finished goods yards, optimizing workflow with a single lifting device.

FEATURES

Single-sided floor leg design – one leg runs on a floor-mounted rail while the opposite side connects to an existing building runway beam, reducing material costs and structural requirements compared to full gantry cranes.

Available in single girder or double girder configurations – single girder for light to medium duty up to 10 tons, double girder for heavier loads and longer spans requiring greater rigidity.

Floor leg with heavy-duty wheels – equipped with double-flanged or V-groove wheels running on a steel rail or angle iron track, with optional electric travel for motorized movement along the floor path.

Optimal for semi-outdoor use – weather-resistant options include galvanized or painted finishes, sealed electrical enclosures, and covers for floor rail to protect against debris, rain, or snow.

Flexible hoist options – compatible with electric wire rope hoists, chain hoists, or manual hoists, with pendant, radio remote, or cabin control for precise load positioning.

Space-saving and economical – eliminates the need for a second floor rail or track on the building-supported side, making it a cost-effective solution for facilities with existing structural support on one side of the crane's travel path.