
Rail-mounted gantry cranes (RMG) are specialized yard container handling machines.
An RMG travels on rails to lift and stack 20, 40 and other iso containers in the yard area of the container terminal. The container is lifted by a spreader attached to wire ropes. Rail mounted cranes come in a variety of models with different spans and overhangs.
These cranes are specifically designed for intensive container stacking due to its automation and less need for human handling. Compared to the crane (RTG), the RMG has the advantages of being driven by electrical power, cleaner, bigger lifting capacity, and higher gantry traveling speed with cargo.
A container crane (also container handling gantry crane ) is a type of large dockside gantry crane found at container terminals for loading and unloading intermodal containers from container ship.
I. Overview Container Gantry Crane:
Rail-mounted gantry cranes (RMG) are specialized yard container handling machines.
An RMG travels on rails to lift and stack 20, 40 and other iso containers in the yard area of the container terminal. The container is lifted by a spreader attached to wire ropes. Rail mounted cranes come in a variety of models with different spans and overhangs.
These cranes are specifically designed for intensive container stacking due to its automation and less need for human handling. Compared to the crane (RTG), the RMG has the advantages of being driven by electrical power, cleaner, bigger lifting capacity, and higher gantry traveling speed with cargo.
A container crane (also container handling gantry crane ) is a type of large dockside gantry crane found at container terminals for loading and unloading intermodal containers from container ship.
II. Container Gantry Crane Features:
a). High efficiency, make full use of yard, high automatic;
b). Few fault, lower energy consumption, low cost;
c). Wide span, can step astride 14 or more containers;
d). Can stow 5 to 6 floors containers;
e). Make full use of yard, so that it can store more containers;
f). Simple structure, easy maintenance, reliable operating;
g). Electric drive, save energy;
h). Crane travels along the rail, not flexible, working range is limited;
i). Applied to stacking area and greater throughput of container port.
III. Container Gantry Crane Technical Functions:
1. The mechanisms can be speed governing ( 1: 10 or larger);
2. The lifting appliances are rotatable;
3. The spacing of portal hook is variable;
4. Limit and warning for over load;
5. Weighing and display of load, PLC control and failure detection, display, record and printing system;
6. Prevent collision between cranes of same span.
IV. Safety Devices Container Gantry Crane
No. | Item | No. | Item |
1 | Limit Switch | 1 | Short-circuit protection |
2 | Interlock protection device | 2 | Uner-voltage protection |
3 | Buffer | 3 | Zero protection |
4 | Rail tongs,Anchor device | 4 | Motor overhead protection |
5 | Rail clear plate | 5 | Emergency stop system |
6 | Protective cover | 6 | Current overhead protection |
7 | Bus bar preventer plate | 7 | Security chain protection |
8 | Anti-collision device | 8 | Ground protection |
Specification
| Item | Data |
| Capacity(NOT including spreader | 30.5-40.5t |
| Span | 15.4-23.47m |
| Lifting height | 18.2m |
| lifting speed | 12-46m/min |
| cross travelling speed | 45-70m/min |
| long travelling speed | 45-100m/mim |
| Working class | ISOA6-A7/FEM3M-FEM4M |
| Power source | as your demands |
| Other | According to your specific usage, specific model and design will offer |
Please give us following information about the crane you need so we can quote you our best proposal and price!
Load Capacity, ton: | (_______) | {Tips: 5 ton, 10 ton, 16 ton, 20 ton, 30 ton, 40 ton, 50 ton up to 550 ton} |
Span, S, m: | (_______) | {Tips: 6m ~40m} |
Lift Height, H, m: | (_______) | |
Voltage: | (_______) | {Tips: 380V, 50Hz, AC, 3-phase or please note} |
Duty Class: | (_______) | {Tips: A5, A3, If you don't know, please fill the follow} |
? Hours per day: | (_______) | One, two or three work shifts per day |
Control way: | (_______) | {Tips: Remote control, cabin control or pendent control } |
Lift Speed: | (_______) | {Tips: Single speed, double speed, or stepless speed} |
Cross & Long travel speed: | (_______) | {Tips: Single speed or stepless speed} |
Rail supply needed | (_______) | {Tips: If yes, please note the Long travel length or the bay length} |
Power supply system needed | (_______) | {Tips: If yes, please note the Long travel length} |
Your nearest port: | (_______) | {Tips: We quote CIF price need the port. FOB price please note FOB} |
CASE
A leading workshop faced challenges with heavy lifting and manual handling. By integrating a Workshop Remote Control Single Beam Gantry Crane, they improved safety, reduced downtime, and enhanced productivity. Discover how this crane solution transformed their operations.
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Learn More Get a QuoteFAQs
An RMG (Rail Mounted Gantry) Container Gantry Crane is a heavy-duty crane used for loading and unloading shipping containers at ports and terminals. It operates on rails and can lift containers with high precision and efficiency.
RMG cranes are mainly used in shipping ports, container yards, and logistics terminals, where large volumes of containers need to be handled quickly and safely.
The lifting capacity varies, typically ranging from 30 tons to over 50 tons, depending on the specific crane model and customer requirements.
With its high-speed lifting and precise positioning, the RMG crane dramatically reduces container handling time, enhancing port throughput and minimizing operational delays.
RMG cranes are equipped with advanced safety features such as anti-collision systems, overload protection, and emergency stop functions, ensuring safe operations in high-volume environments.
Yes, Sinoko offers comprehensive installation services, as well as operator training, to ensure safe and efficient operation of the RMG Container Gantry Crane.


















