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Semi Gantry Crane
Semi‑gantry crane (also known as semi‑portal crane) is hybrid lifting equipment combining advantages of overhead crane and full gantry crane.
Yangyumech supplies BMH single‑girder and BMG double‑girder semi‑gantry crane, capacity 2‑40 tons. One side runs on building elevated runway beam, the other side travels on ground rail.
It saves steel structure & civil‑work cost, widely used for new‑build or retrofitted indoor workshops and outdoor yards.
• Capacity: 2t-40t. Span length: 15-30m
• Lifting height: 6-12m,etc. Work duty: A3-A6
• Raged voltage: 220V~690V, 50-60Hz, 3ph AC
• Reference Price Range: $6000-100000/set
Description
Typical Application & Working Conditions
Our semi‑gantry semi‑portal cranes serve multiple scenarios:
‑ Retrofitted existing workshops (when full overhead crane reconstruction is too costly)
‑ Mechanical manufacturing, equipment assembly, mold‑changing workstations
‑ Warehouses, material stock yards, cement‑product precast yards
‑ Station freight yards, wharves, power‑station maintenance sites
‑ Mixed indoor‑outdoor operation next to factory buildings
Working environment: temperature‑25℃ ~ +40℃; relative humidity ≤85%.
Working duty class: A3‑A6 according to model selection.


Work environment temperature: -25℃~+40℃, relative humidity ≤85%; Crane control mode: Pendant control / Wireless remote control / Cabin control
Semi-type gantry cranes (BMH type, BMG type) are used with CD1, MD1, other types of electric hoist or LH hoist trolley or QD trolley. It is suitable for lifting, transporting, loading and unloading in open-air operation sites such as stations, wharves, warehouses, construction sites, cement product yards, machinery or structural assembly yards, power stations, etc. It is also suitable for working in indoor workshops.
The support legs of the semi-gantry crane have a height difference, which can be determined according to the civil construction requirements of the use site.
It is composed of lifting mechanism and trolley, single main beam (or double main beam), support leg, and end carraige, electric control box, operating system, and safety protection system, etc.
Semi gantry crane is a special form of Gantry Crane. Just as shown in the picture, at one side of the crane, this gantry crane for sale runs on an elevated runway system like a overhead crane along the length of the factory.
At the other side, it just runs like a standard rail mounted gantry crane. This special overhead gantry crane for sale allow you extend your workplace by not needing a runway system from the top of the building.
Compared with gantry crane, it uses the structure of the plant instead of a new leg of the crane itself. Undoubtedly, it owns a more cost effective. Considered that semi gantry crane doesn’t depend entirely on the plant, this special structure gantry crane has an advantage on the flexibility over EOT crane.
There are two typical applications:
Indoors, it is often used under the existing overhead cranes to provide more hooks, thus improving the productivity of your factory.
Outdoors, often is used near the building, making full use of the existing runway structure, thus improving the cost efficient of your factory or plant.
Depending on the loading capacity, this special kind gantry crane can be formed in single girder gantry cranes, as well as double girder gantry crane. So, if you want to see more technical parameters, you can just get a reference from corresponding Overhead Cranes or Gantry Cranes.
Features
1. Hybrid space‑saving structure: Combine overhead runway support and ground rail travelling, save material cost compared with full gantry crane. Ideal for workshop renovation projects.
2. High structural rigidity: Box‑welded main girder design, controlled deflection under full‑load, stable lifting performance. BMH for light‑medium loads; BMG for heavy‑duty requirements.
3. Multiple flexible control choices: Support pendant push‑button, wireless remote control and operator cabin to adapt different operating habits.
4. Complete safety protection system: Standard equipped with overload limiter, travel limit switches, anti‑collision device to ensure reliable daily operation.
5. Convenient installation & commissioning: Modular component design, shorten on‑site installation cycle, easy for later maintenance and spare‑part replacement.
6. Wide adaptability: Can be deployed for both indoor workshop and adjacent outdoor yards, with customizable height‑difference support legs to match existing civil‑construction conditions.
Technical Data
| Span(rail to rail center) | 6m~data required | ||||
|---|---|---|---|---|---|
| Cantilevers | According to your demand, but not more than 1/3 of span | ||||
| Lifting height | as required | ||||
| Capacity | 3t, 5t | 1 0t | 1 5t, 16t | 20t, 25t | 30t, 32t |
| Lifting speed(m/min) | 8, 8/0.8 | 7/0.7 | 3.5,3.5/0.35 | 4, 4/0.4 | 3,3/0.3 |
| Cross travelling speed(m/min) | 10or 20 | 10 or 20 | 10 or 20 | 10or 20 | 10 or 20 |
| Long travelling speed(m/min) | 20, 30 | 20, 30 | 20, 30 | 20, 30 | 20, 30 |
| Duty Class | A3/A5 | ||||
| Power source | 380V, 50HZ, 3 phase (or other standard) | ||||
| Power supply mode | Cable reel / Bus bar | ||||
| Control model | Pendant pushbutton control, cabin control or remote control | ||||
Purchasing Process




Our Crane Certifications
Our cranes (overhead crane, gantry crane, jib crane and electric hoist) are fully certified to meet international and local manufacturing standards. We hold complete qualification documents to guarantee product safety and reliable quality for global buyers. Below are our key certifications:
- ISO 9001 Quality Management System Certificate
- ISO 45001 Occupational Health & Safety Management Certificate
- Special Equipment Type Test Certificate for Lifting Machinery
- Manufacturing License for Lifting Equipment
- Third‑party Independent Audit Certificates
- Complete Export‑Oriented Qualification Documents
Our Custom Visit
We welcome worldwide customers to visit our manufacturing workshop. You can check crane production processes, raw materials and finished products face‑to‑face with our engineering team.
- Customized Crane Solution Design
- Professional Technical Consultation & Quotation Support
- Production Tracking & Quality Supervision
- Overseas Shipping & Complete Document Service
- After‑sales Technical Support & Guidance


FAQs About Choosing the Right Gantry Crane and Supplier
In order to obtain accurate quotes for custom overhead cranes, providing the following core information will greatly improve efficiency:
1. Key specifications: including rated lifting weight (tons), span (i.e., track spacing, meters), and lifting height (meters), which is the basis of the design.
2. Use environment and working conditions: Explain the conditions of the installation site (such as indoor/outdoor, temperature, humidity) and work level (busy level), which determines the material selection and configuration level of the structure.
3. Specific configuration requirements: clarify the drive mode (such as frequency conversion control), brand preferences for electrical components, safety devices (such as overload limiters, anti-collision systems), and whether special functions such as remote control are required.
4. Installation and service: confirm the on-site power supply conditions (voltage, frequency), installation conditions, and specific expectations for delivery time, installation and commissioning, and after-sales service.
The more detailed the information provided, the more accurate and reliable the solutions and quotations obtained.
1. Span and lifting capacity: this is the foundation.The larger the span and the higher the rated lifting weight, the material and design costs of the main beam and structure will increase significantly, and the higher the price.
2. Working level and frequency of use: The working level (A1-A8) represents the busy level and load status of the crane.Cranes with frequent and heavy-duty use require more durable motors, gearboxes and structural parts, and the cost is naturally higher than that of lightweight and occasionally used equipment.
3. Structure and configuration: The double beam is more complex and stable than the single beam structure, and the price is higher.At the same time, the lifting height, operating speed, motor brand, control system (ordinary vs frequency conversion), and the level of safety devices (such as anti-swing, load monitoring) all directly affect the final quotation.
4. Degree of customization and brand service: completely standard models have lower costs.The customized design based on the workshop environment (such as explosion-proof and high temperature), special processes (such as metallurgical special), brand added value, and after-sales guarantee system will all be reflected in the price.
In simple terms, when buying a bridge crane, it is necessary to consider “how much, how frequently, what environment and what configuration”, which determine its core value and price.
Which crane to choose mainly depends on your specific needs. You can quickly judge from the following four core aspects:
-Single-beam bridge crane: it is suitable for conventional workshops with light and medium loads (usually ≤20 tons), medium span, and low frequency of use. It is the most economical and versatile choice.
-Double-girder bridge crane: used for heavy-duty, long-span, or high-work-level occasions (such as frequent hoisting, metallurgy, heavy-duty assembly). Its stability, durability, and safety are higher, but the cost is also increased accordingly.
-Free vertical crane (cantilever/column type): suitable for fixed working points and working conditions with limited rotation range, such as beside machine tools, maintenance areas, or production line stations, it can efficiently use corner space and be installed flexibly.
-Grab crane: It is specially used for the handling, loading, and unloading of bulk materials (such as grain, coal, sand, and gravel). The only reason to choose it is that you need to deal with such unpackaged loose materials.
In simple terms, you can filter according to this logic:
First, according to the lifting weight and span, choose between a single beam and a double beam.
If the scope of operation is highly concentrated and the space is limited, consider a free vertical.
If the handling object is bulk material, it points directly to the grab type.
Delivery times largely depend on whether the crane is standard or customized. Based on our experience, standard single-girder and double-girder cranes can be produced more quickly, while cranes with special spans, duty ratings, or environmental requirements naturally require additional engineering design time.
For each quotation, we provide an estimated production and delivery schedule based on your configuration and destination. Throughout the manufacturing process, our team maintains communication with the customer to ensure no unexpected issues arise before shipment.
Compared with many suppliers, Yangyumech mainly reflects the two differentiated advantages of high customization flexibility and clear international compliance when providing bridge cranes.
On the one hand, we focus on in-depth customized services. According to your specific needs, we can provide fully customized solutions on core parameters such as rated load capacity, span, and lifting height, and accept personalized requirements. This means that what you get is not a standard product, but exclusive equipment that accurately matches the working conditions of your workshop.
On the other hand, we attach importance to international standards and quality certification. Our products clearly meet the requirements of international certifications such as CE, which ensures that their safety and reliability can meet the mainstream standards of the international market, and provides you with additional quality confidence guarantees. Combined with our direct supply capabilities as a powerful factory, we can achieve better comprehensive value for you while obtaining compliant and customized products.
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