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Single Girder Semi Gantry Crane is a semi-type gantry lifting equipment that combines the structure of an overhead crane and a gantry crane. It is also called a semi-gantry crane or single-leg gantry crane. One side of the crane runs on a ground rail through supporting legs, while the other side runs on an elevated runway connected to the building structure. This design reduces installation requirements and is suitable for indoor and outdoor material handling areas with limited space.
The crane consists of a main girder, supporting leg, ground beam, hoisting mechanism, traveling mechanism, and electrical control system. The single girder structure is usually equipped with an electric hoist for lifting operations, featuring a compact design and lower self-weight. The standard lifting capacity ranges from 2 to 20 tons, with a span of up to 31.5 m, suitable for machinery plants, warehouses, assembly workshops, and outdoor yards.
Single Girder Semi Gantry Crane provides stable operation and good wind resistance for outdoor working conditions. Compared with a full gantry crane, it uses the existing building structure on one side, reducing installation requirements and improving space utilization. The crane supports pendant control, wireless remote control, and cabin operation, with customized options for span, lifting height, and working conditions.
A Single Girder Semi Gantry Crane is made up of several main components, including the girder, support structure, hoisting unit, traveling system, and electrical system. These components work together to complete lifting, movement, and control functions during operation.
Each component plays a specific role in the lifting and traveling process, forming a complete crane system for factory, warehouse, and outdoor material handling applications.
Single Girder Semi Gantry Crane works through the coordinated operation of the hoisting mechanism, trolley traveling system, and crane traveling system to complete material lifting and transportation.
The electric hoist drives the drum to wind or release the wire rope, allowing the hook to lift or lower loads vertically. The hoisting mechanism controls the up and down movement of materials.
The electric hoist moves horizontally along the girder rail, transferring the load between different working positions on the crane span.
The traveling mechanism drives the crane along the ground rail through motors, reducers, and wheel assemblies. One side runs on the ground track, while the other side moves along the elevated runway.
The crane is operated by pendant control, wireless remote control, or cabin control. The electrical system controls each movement, while overload protection, limit switches, and emergency stop devices protect the equipment during operation.
The operator starts the crane, lifts the load to the required height, moves the hoist and crane to the target position, and lowers the load for placement. The three movement systems work together to complete the lifting task.
| Parameter | Specification |
|---|---|
| Lifting Capacity | 0.5–100 Tons |
| Lifting Height | 4–12 m |
| Span | 3–30 m |
| Hoisting Speed | 0.7–8 m/min |
| Trolley Traveling Speed | 20 m/min |
| Crane Traveling Speed | 20–30 m/min |
| Working Class | A3–A5 |
| Working Temperature | -25℃ to +40℃ |
| Power Supply | 380V / 50Hz (Customizable) |
| Main Girder Type | Box Girder Structure |
| Hoisting Mechanism | Electric Hoist / Wire Rope Hoist |
| Control Method | Pendant Control / Wireless Remote Control / Cabin Control |
| Safety Devices | Overload Protection, Limit Switches, Buffers, Emergency Stop System |
| Motor Protection Grade | IP44–IP55 |
WEIHUA provides customized Hoist Single Girder Gantry Crane solutions based on specific lifting requirements and site conditions. The lifting capacity, span, lifting height, hoist type, control system, power supply, and safety configuration can be adjusted to meet different industrial applications. Contact WEIHUA for a crane design according to your project requirements.
Get Custom Quotation NowSingle Girder Semi Gantry Crane is widely used for material lifting and transfer operations in factories, warehouses, workshops, storage yards, and outdoor working areas. It is suitable for handling steel products, machinery parts, production materials, and other heavy loads in various industrial applications.
Used for lifting and transferring production materials, machine parts, and equipment components in manufacturing plants.
Applied for loading, unloading, and moving steel products, pipes, and heavy goods in open areas.
Used for cargo handling, material stacking, and internal transportation in warehouses.
Suitable for lifting steel beams, profiles, and fabricated structures during manufacturing and assembly.
Used for handling molds, mechanical parts, and machine components during production processes.
Applied for lifting and positioning machines, production equipment, and large components.
Used for equipment repair, replacement, and maintenance lifting operations.
Suitable for handling large metal components and heavy loads in shipbuilding and industrial production areas.
To learn more about the applications of gantry cranes, read the article: What Is a Gantry Crane Used For? Applications and Industries
Single Girder Semi Gantry Crane and Gantry Crane have different structures and applications. A semi-gantry crane uses one ground-supported leg and one side connected to an elevated runway, while a standard gantry crane has two legs running on ground rails. The semi-gantry design requires less installation space and is suitable for workshops, warehouses, and outdoor areas with existing structures.
| Comparison | Single Girder Semi Gantry Crane | Gantry Crane |
|---|---|---|
| Structure | One side runs on ground rails, the other side runs on an elevated runway. | Two legs support the crane and run on ground rails. |
| Girder Type | Single girder box structure with compact design. | Single or double girder structure for different loads. |
| Lifting Capacity | Usually up to 50 tons, suitable for light and medium loads. | Can reach hundreds of tons for heavy lifting operations. |
| Span Range | Usually up to 35 m, suitable for limited working areas. | Can exceed 50 m for large operation areas. |
| Space Requirement | Uses existing building structures and saves installation space. | Requires full ground rail systems and larger working areas. |
| Applications | Used in workshops, warehouses, machinery plants, and outdoor yards. | Used in ports, terminals, and large storage yards. |
| Hoisting System | Usually equipped with an electric hoist for lifting operations. | Uses electric hoist or trolley system according to lifting requirements. |
| Working Class | A3–A5 for light and medium duty applications. | A3–A8 for light to heavy duty operations. |
| Installation | Compact structure, simple installation, and easy maintenance. | Larger structure with higher installation requirements. |
| Cost | Lower investment for medium-duty lifting tasks. | Higher cost for heavy-duty and high-frequency operations. |
Single Girder Semi Gantry Crane is suitable for applications requiring moderate lifting capacity, limited space, and lower installation costs. Gantry Crane is designed for larger loads, wider spans, and heavy-duty working conditions such as ports and large industrial yards. The choice depends on lifting capacity, working area, operation frequency, and site conditions.
Selecting a Single Girder Semi Gantry Crane mainly depends on the load, installation conditions, and working environment. The crane specifications should match the actual handling requirements.
The right Single Girder Semi Gantry Crane should be selected based on the load capacity, installation conditions, and daily operation requirements to fit the actual working site.
For more detailed information on selecting the right model, see the article: What Is a Semi-Gantry Crane? Types, Working Principle & Selection Guide
Gantry cranes must be inspected regularly during operation to ensure safe use. For a detailed inspection checklist, see the article: “Gantry Crane Inspection Checklist: Daily, Monthly, and Annual Inspection Guide.”
Single Girder Semi Gantry Crane can be customized according to lifting requirements, site conditions, and operating needs.
To learn about the factors that affect pricing and how to choose the right model, see the article: Gantry Crane for Sale: Types, Prices & Buying Guide (2026)
Get Custom Quotation Now
WEIHUA Single Girder Semi Gantry Crane is designed for outdoor and indoor material handling applications, featuring a compact structure, stable operation, and flexible installation. With one side supported by ground rails and the other side connected to an elevated runway, it is suitable for factories, warehouses, workshops, and outdoor yards where space utilization is important.
As an experienced crane manufacturer and supplier, WEIHUA provides complete solutions from crane design and production to installation support and after-sales service. With professional engineering teams, advanced manufacturing facilities, and overseas project experience, we supply customized Single Girder Semi Gantry Cranes for customers worldwide. Contact us for a crane solution based on your lifting requirements and working conditions.
A single girder semi gantry crane is a crane with one ground-supported leg and one elevated runway side, designed for flexible lifting applications.
It is commonly used in outdoor yards, factories, warehouses, steel plants, and maintenance areas.
Yes. It can be designed with wind-resistant structures for outdoor working conditions.
The capacity can be customized according to application requirements, commonly from 1 ton to 50 tons.
A semi gantry crane uses one supporting leg and one elevated runway, while a gantry crane uses two ground-supporting legs.
Yes. WEIHUA provides customized designs based on capacity, span, height, and working environment.
Weihua, founded in 1988, has evolved into a global leader in China's intelligent manufacturing field. We specialize in smart crane R&D and production while offering AGV solutions. Our professional engineering, delivery, and after-sales teams provide one-stop technical support, customized solutions, on-site installation guidance, and rapid-response global services to ensure every project operates safely and efficiently.
Yes. We offer custom fabrication from a minimum order of 1 unit. Customizable parameters include lifting capacity, height and span dimensions, leg configuration, caster type, hoist integration, surface treatment, and certification requirements. Submit your specifications and our engineering team will respond within 24 hours.
Yes. Gantry crane trolleys are crane trolleys adapted for outdoor use and for the beam profiles used in gantry crane construction. They carry the same hoist types as overhead crane trolleys but are specified with higher IP-rated motors, reinforced wheel flanges for outdoor rail running, and anti-wind safety devices where required. Both single girder and double girder gantry crane trolley configurations are available.
Yes. All models are rated for outdoor use on firm, level surfaces. Outdoor operation requires regular inspection of fasteners and casters for corrosion. Hot-dip galvanized surface treatment is recommended for permanent or frequent outdoor use.
Most models assemble in 20 to 35 minutes with one person using a standard wrench. All components are numbered and correspond to an illustrated assembly guide included with every crane.
Yes, it is designed for heavy-duty lifting in both automotive manufacturing and shipyard environments.
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