Gantry Crane
Your Professional Gantry Crane Supplier
A gantry crane is a type of crane with single or double legs that support the main girder. It travels along ground-mounted rails through its supporting legs to achieve horizontal and vertical material handling. Compared with overhead bridge cranes, gantry cranes generally do not require installation on the building structure, offering advantages such as flexible installation, a large operating range, strong load capacity, and suitability for both indoor and outdoor applications.
Gantry cranes are widely used in manufacturing, steel industries, shipyards, construction sites, logistics and warehousing, railway yards, ports, and terminals. They are mainly used for handling steel materials, mechanical equipment, prefabricated components, containers, and other heavy loads.
Types of Gantry Cranes
Common types of gantry cranes include box girder gantry cranes, truss gantry cranes, single girder gantry cranes, double girder gantry cranes, and container gantry cranes.
Structural and Hardware Design Features of Industrial gantry cranes
High-Strength Steel Structure
The entire structure is welded and stress-relieved to prevent deformation and ensure uniform load-bearing capacity.
Variable Frequency Smooth Operation
Smooth start and stop without impact, reducing load sway and improving lifting safety.
Multiple Safety Braking Systems
Equipped with dual braking systems for immediate stopping after power failure and precise, reliable braking performance.
Outdoor Weather-Resistant Design
Features rust and corrosion resistance, dustproof and waterproof protection for long-term outdoor operation.
Modular Structure
Easy installation and disassembly, simple maintenance, and lower long-term maintenance costs.
Low-Failure-Rate Components
Equipped with reliable electrical, traveling, and lifting components from leading domestic brands to ensure stable operation.
Product Introduction
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Lifting Capacity: |
3t to 20t |
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Span: |
5m-35m |
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Lifting Height: |
6m to 18m |
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Lifting Speed: |
7m/min, 8m/min, 3.5m/min |
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Traveling Speed: |
20m/min |
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Working Class: |
A4 |
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Ambient Temperature: |
-20℃ to 40℃ |
Advantages of Gantry Cranes
Flexible Installation Site
Gantry cranes are supported by ground-level legs on both sides, eliminating the need for load-bearing beams installed on the top structure of a building. They can be directly installed in outdoor yards, storage areas, construction sites, and freight yards. They are suitable for both indoor and outdoor applications, requiring lower site modification costs and offering easier relocation and disassembly.
Wide Operating Coverage
With a gantry frame structure, the crane travels along ground rails and can perform lifting operations within the gantry span. The span can be customized according to requirements, making it suitable for large material storage areas and extensive outdoor working spaces without being restricted by building roof structures.
Strong Overall Structural Rigidity
The integrated gantry frame design provides a stable structure, high strength, and reliable ground support. Compared with other lifting equipment, it offers stronger outdoor wind resistance and maintains stable operation under heavy-duty and frequent lifting conditions, making it suitable for long-term outdoor yard operations.
Strong Load Capacity
Gantry cranes can perform heavy-duty lifting operations with large capacities. The span and lifting height can be customized according to customer site requirements to meet the handling, loading, and unloading needs of heavy components and large materials.
Easy Maintenance and Operation
Key load-bearing components are exposed and visible, making daily inspections, maintenance, and component replacement more convenient. Regular inspection of critical parts helps ensure stable equipment operation and reduces long-term maintenance costs.
Suitable for Multiple Industries
Rail-mounted or rubber-tired models can be selected according to different working conditions. Gantry cranes are widely used in precast concrete plants, steel storage yards, logistics yards, shipyards, and construction sites. They can be put into operation without the need for large-scale factory buildings.
Standard modular design makes installation and adjustment easier.
It can be installed and used on any flat ground.
Wide applicability, applicable to various material handling environments.
Easy installation, reduced installation time and cost, and high cost performance.
The special specification could be customized according to customer requirements.
How to Select the Right Gantry Crane?
Improper selection can lead to premature equipment fatigue, significantly increased maintenance costs, and even safety accidents. The following are six key parameters that should be considered when selecting a gantry crane.
1. Rated Load Capacity
The maximum weight that the equipment is designed to lift. It is recommended to select a crane with a capacity of 1.25 times the actual maximum load to provide a sufficient safety margin. Common specifications include: 5t/10t/16t/20t/32t/50t/80t/100t/200t/300t.
2. Span
The horizontal distance between the centerlines of the two rails. It depends on the width of the working area. An excessive span increases structural weight and cost, while an insufficient span cannot cover the required operating area. Common spans range from 7.5m to 50m.
3. Lifting Height
The vertical distance from the lowest to the highest position of the hook. It should meet the height requirements of the lifted load and consider the dimensions of the lifting accessories. Common lifting heights range from 6m to 30m.
4. Duty Class
Indicates the operating frequency and load conditions of the crane. A higher duty class provides better durability and longer service life.
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Duty Class |
Usage Frequency |
Typical Applications |
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A3-A4 |
Occasional Use |
Warehouses, maintenance workshops |
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A5-A6 |
Medium-Frequency Use |
Factory workshops, storage yards |
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A7-A8 |
High-Frequency Use |
Ports, steel plants, continuous production lines |
Applications and Suitable Industries of Gantry Cranes
The biggest advantage of gantry cranes is that they do not rely on factory buildings and can operate outdoors. With a wide operating range and excellent outdoor stability, they are highly suitable for open areas, storage yards, and outdoor engineering projects. They are widely used for outdoor heavy lifting and material transfer operations. The main application scenarios include:
Precast Concrete and Steel Structure Industries
Mainly used for handling, turning, positioning, assembly, and loading of precast concrete components and steel structures in precast plants. With large spans and stable operation, gantry cranes can meet large-scale and high-frequency lifting requirements in production areas.
Logistics Yards, Ports, and Railway Freight Terminals
Widely used in ports, railway yards, and outdoor storage yards. They can perform container stacking and loading/unloading operations, as well as the lifting, stacking, and transportation of bulk materials such as steel, pipes, stone, and timber, meeting high-volume and efficient cargo handling requirements.
Open-Pit Industrial and Mining Material Yards
Gantry cranes are highly adaptable to outdoor material yards for coal, ore, sand, and gravel. Equipped with grabs, they can perform bulk material grabbing, stacking, and loading transfer operations. With strong wind resistance and durability, they can operate continuously in outdoor and dusty environments.
Infrastructure, Bridge Construction, and Hydraulic Engineering
Suitable for outdoor construction sites without factory buildings. They are commonly used for lifting construction materials, transferring components on-site, and performing equipment installation, maintenance, and gate lifting operations in hydropower stations, power plants, and other outdoor engineering projects.
Shipbuilding, Shipyards, and Heavy Industry
Designed for large shipyards and heavy-duty operations, gantry cranes are used for ship block assembly, lifting of large marine equipment, and handling of structural components. With large spans and high stability, they meet the heavy lifting requirements of the shipbuilding industry.
Factory Manufacturing and Plant Maintenance
Suitable for open factory areas and outdoor workshops for large equipment installation, dismantling, relocation, maintenance, and heavy component transfer. Gantry cranes solve outdoor and cross-area lifting requirements that cannot be covered by conventional indoor overhead cranes.
Application Summary:
Compared with conventional overhead bridge cranes, gantry cranes do not rely on factory building structures, can operate outdoors in all weather conditions, and provide a wider working area. They are ideally suited for open spaces, outdoor storage yards, outdoor engineering projects, and external lifting operations in industrial plants, making them the preferred solution for these working environments.
Customized Solutions for Non-Standard Working Conditions
For working conditions where standard equipment cannot meet requirements due to limited space, complex environments, or special operation needs, we provide one-to-one customized solutions. Based on the actual site conditions, we adapt the crane model, adjust parameters, and optimize configurations to ensure the equipment fully meets on-site application requirements.
Customized Design for Special Site Dimensions
The load capacity, span, leg height, rail gauge, and cantilever length can be flexibly adjusted according to the available site space. For large-span areas, low-height spaces, narrow sites, and irregular working zones, customized structural optimization is provided to solve installation and operation challenges caused by space limitations.
Customized Solutions for Harsh Environments
We support various protective modifications for special working conditions, including explosion-proof, corrosion-resistant, moisture-proof, dust-proof, high-temperature-resistant, and cold-resistant configurations. The equipment can adapt to complex environments such as chemical plants, mining sites, dusty workshops, outdoor wind and rain conditions, and extreme temperature applications, providing higher durability and safety.
Flexible Crane Configuration Selection
Based on operating frequency, lifting requirements, and budget, we provide multiple configuration options, including economical, standard, and high-performance solutions. Different traveling, drive, and control methods can be customized to meet various applications such as rail-mounted operation and trackless movement, avoiding unnecessary costs and excessive configurations.
Complete Customized Service
We provide free on-site surveys, customized solution design, dedicated drawing confirmation, custom manufacturing, and installation and commissioning services. The complete solution is designed to match actual working conditions, ensuring reliable performance, durability, and excellent adaptability.
Safe Operation and Daily Maintenance of Gantry Cranes
Standardized operating procedures and regular maintenance are essential for ensuring stable operation, extending service life, and eliminating potential safety hazards of gantry cranes. The following are standardized operating procedures and daily maintenance guidelines based on actual site operation requirements, providing practical and easy-to-implement solutions.
一、Safety Operation Requirements
1. Operator Qualification Requirements:
Operators must hold the required special equipment operation certification and be familiar with crane operating procedures. Unlicensed personnel or operators with expired certificates are strictly prohibited from operating the equipment.
2. Comprehensive Inspection Before Operation:
Before starting the crane, check that the rails are level and free of obstacles, and ensure that ground anchors and safety devices are secure and reliable. Carefully inspect the effectiveness of brakes and emergency stop buttons, check wire rope wear and broken wires, and verify the condition of lifting accessories such as hooks and shackles. Operation is allowed only after confirming that the equipment is free of faults.
3. Strictly Prohibit Overload Operation:
Lifting operations must be carried out strictly according to the rated load capacity of the equipment. Overloading, unbalanced loading, diagonal pulling, and inclined lifting are prohibited. The crane must not be used to drag other objects with suspended loads. Unauthorized lifting operations must be avoided to prevent equipment failures and safety risks.
4. Smooth and Uniform Operation:
Lifting, traveling, and lowering operations should be performed smoothly and at a constant speed. Sudden starts, emergency stops, and rapid direction changes are prohibited to prevent impact damage to the crane structure and lifted loads.
5. Proper Control of Working Areas:
Personnel are strictly prohibited from standing, passing, or handling materials within the lifting area or directly below suspended loads. Before lifting, ensure that all personnel have moved to a safe distance and maintain proper safety clearance.
6. Outdoor Weather Control:
During outdoor operations, lifting work must be stopped immediately in case of strong winds of level 6 or above, heavy rain, fog, or other severe weather conditions. The crane should be returned to the designated position and properly anchored to prevent sliding or overturning.
二、Daily Maintenance and Service Guidelines
1. Daily Inspection and Cleaning:
Conduct pre-operation inspections before daily work. After operation, clean debris and dust from the equipment and rail surfaces, and check the crane for abnormal noises, vibration, or hydraulic oil leakage. If any abnormal conditions are found, stop the machine immediately for inspection.
2. Regular Component Maintenance:
Regularly inspect and lubricate components such as wire ropes, bearings, traveling wheels, and reducers according to maintenance requirements. Check the lifting hook for wear, deformation, and cracks, and replace worn or aging components in time to ensure smooth equipment operation.
3. Electrical System Inspection:
Regularly inspect electrical components such as cables, control switches, and limit switches. Check the braking system and identify issues such as aging wiring and poor electrical contact to ensure reliable operation of the braking and limit systems.
4. Complete Equipment Tightening and Adjustment:
Regularly inspect the fastening condition of bolts, connecting components, supporting legs, and welds. Adjust and calibrate the rail system, braking system, and limit functions to ensure structural stability and equipment performance.
5. Regular Shutdown Inspection and Maintenance:
Establish equipment maintenance records and keep daily, weekly, and monthly maintenance logs. According to regulatory requirements, entrust qualified organizations to conduct annual inspections of lifting equipment. Carry out regular comprehensive maintenance to prevent potential failures in advance and reduce downtime and repair costs.
why choose us
Mature gantry crane manufacturing & custom engineering capability
As a professional crane manufacturer, we have rich experience in single‑girder, double‑girder and rubber‑tyred gantry cranes. We handle both standard‑spec orders and complex non‑standard projects, supporting custom span, tonnage, special anti‑corrosion, explosion‑proof and offshore‑adapted solutions according to actual site conditions. Our engineering team can output general arrangement drawings and load‑related technical documents for your civil construction reference.
Strict quality control & complete international certification
Every gantry crane goes through raw material inspection, welding stress relief, assembly debugging and factory test before shipment. Our products comply with CE and ISO standards. Complete deliverable documents are available, including test reports, material certificates and English‑language operation‑maintenance manuals to meet overseas project acceptance requirements..
Optimized production & seaworthy export‑oriented design
Our gantry cranes adopt modular split structure, convenient for container or flat‑rack shipment with seaworthy anti‑rust packaging. We offer clear lead‑time reference for both standard and customized units, avoiding over‑long waiting for your project schedule.
Reliable full‑cycle technical support
We provide 12‑month warranty for whole equipment and lifelong spare‑parts supply. Remote video guidance for installation, troubleshooting and daily maintenance is available. On‑site engineer guidance service can also be arranged upon customer request (service cost borne by buyer).
Q: What qualifications are required for gantry crane operators?
A: Operators must hold a valid crane operator certificate for lifting machinery, which requires renewal every four years. Unlicensed operators or personnel with expired certificates are strictly prohibited from operating the crane. Before starting work, operators must also receive equipment operation training and be familiar with the crane controls, safety devices, emergency stop functions, and wind protection systems.
Q: How often does a gantry crane require statutory inspection?
A: According to lifting equipment management regulations, gantry cranes should undergo regular inspections by qualified organizations every two years during operation. Safety protection devices such as load limiters, limit switches, and brakes are recommended to be calibrated annually. Daily pre-shift inspections, weekly checks, monthly maintenance, and maintenance records should also be implemented.
Q: At what wind speed should outdoor gantry crane operations be stopped? What wind protection measures are required?
A: For outdoor operations, lifting operations must be stopped immediately when wind speeds reach Level 6 or above. After operation, the hook should be raised to the designated position, the trolley should be moved back to the safe position, and rail clamps or iron wedges should be used to lock the crane on the rails. Ground anchors should also be used for additional fixation to prevent sliding or overturning. Wind speed monitoring devices can be added for coastal areas with frequent strong winds.
Q: Besides load capacity, what key parameters should be considered when selecting a gantry crane?
A: Rated load capacity is only the basic parameter. Other factors that must be confirmed include span, lifting height, duty class, power supply voltage, and operating environment. For frequent continuous heavy-duty operations, a higher duty class should be selected. The crane should not be selected only based on the maximum load weight, as improper selection may lead to fatigue damage.
Q: Which wear parts should be regularly inspected during gantry crane maintenance?
A: Key inspection items include wire ropes, lifting hooks, brakes, traveling wheels, bearings, and reducer oil levels. The electrical system should be checked for cables, limit switches, and emergency stop buttons. Components such as wire ropes and traveling wheels must be replaced immediately when they reach the replacement criteria, and equipment with faults must not be operated.
Q: Is the crane rail foundation included with the gantry crane? Can rails be installed directly on the ground?
A: The equipment quotation does not include civil engineering work for the rail foundation. The rail foundation needs to be separately designed and constructed according to the wheel loads of the crane and site geological conditions. Directly installing rails on existing concrete floors is not recommended, as long-term loading may cause settlement and rail deformation, resulting in crane wheel derailment or rail biting and accelerating equipment damage. The manufacturer can provide foundation load drawings for use by the civil construction team.