Container RTG Gantry Crane

SinoTech rail-mounted gantry crane has the ability of lifting large goods with double lifting points and single machine. It is specially designed and manufactured by the girder lifting machine manufacturer for lifting precast beams or laying bridges in the beam fabrication yard.

What is good about our travel lift:

> Widely used together with a winch or trolley for lifting devices.

> Medium and heavy size crane which travels in track

> Controlling methods namely ground controlling and cabin controlling

Our port container crane RMG is a very popular model of container yard at home and abroad, which is more and more used in our port.

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    Container RMG Crane

    Container Crane RMG is a very popular model of container yard at home and abroad, which is more and more used in our port.

    There are three working mechanisms of Port Container Crane RMG: lifting mechanism, trolley travelling mechanism and crane gantry travelling mechanism


    8 – 15m


    30 – 200t

    Here are top 4 hot-selling travel lift models



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    Hoist Gantry Crane

    Capacity: 5-100t

    What Is Rail Mounted Gantry Crane?

    A Rail Mounted Gantry (RMG) crane is a type of large, specialized gantry crane commonly used to load and unload containers from freight trains and trucks at container terminals. These cranes are mounted on rails, allowing them to travel along a track to position themselves over the appropriate container or cargo for efficient handling.

    They respectively realize three movements of lifting goods up and down, left and right (horizontal) moving and front and back (longitudinal) moving, forming an operation area

    According to different uses, Port Container Crane RMG are used in railway freight yards and port terminals. According to the different structures, there are lifting mechanisms with rigid suspenders and with flexible hangers.

    Key features of Rail Mounted Gantry Cranes include:

    1. Rails: RMG cranes are equipped with wheels that run along a track or rail system, enabling them to move laterally and position themselves precisely in the loading and unloading area.
    2. Lifting Capacity: RMG cranes are typically designed to handle heavy loads, often in the range of 30 to 80 tons or more, making them suitable for the efficient transfer of large containers.
    3. Precision and Control: These cranes are known for their precise control systems, allowing for accurate and efficient positioning of containers during the loading and unloading process.
    4. Automation: Many RMG cranes are equipped with advanced automation features, including remote control and computerized systems for optimal operational efficiency.

    RMG cranes play a crucial role in container handling operations, assisting in the seamless transfer of cargo between different modes of transportation, such as ships, trains, and trucks, within container terminals and logistics facilities.

    Models of Container Rail Gantry Crane For Sale

    We have electric tyre bridge girder gantry cranes and hydraulic bridge girder gantry cranes available for sale. Our Bridge Girder Gantry Cranes are widely used and cater to various construction needs. 

    Lifting height: 8 m, 9 m, 12 m, 16 m, 20 m, 22 m, 30 m, 50 m (common specifications) can be customized;

    Lifting capacity: 30 tons, 70 tons, 64 tons, 80 tons, 110 tons, 130 tons, 150 tons, 190 tons, 220 tons (common specifications) can be customized;


    27m, 28m, 30m, 35m, 37m, 38m, 42m, 46m, 47m, 50m (common specifications) can be customized.

    Here are some hot-selling models:

    Container RMG Crane




    8 – 15m


    30 – 200t

    The lifting capacity is generally 36t and 40.5t. The span is 26m, 30m and 35m, and could be designed and manufactured based on client demands. 

    Apart from the need to add tracks in the container yard, it excels in aspects such as stack height, stack positioning accuracy control, anti-sway performance, and structural stress state compared to the tire-type container gantry crane.

    Recommended Models:

    Best Seller RMG45t-32m


    Lifting Capacity: 30t

    Span Length: 32m


    Lifting Capacity:50t

    Span Length: 35m

    Specifications of Container RMG Crane

    Specifications of travel lift:

    ifting Capacityt51016/3.220/532/850/1075/20
    Working System                             A5
    Lifting HeightMainm10-1210-1210-121210-1210-1210-12
    Aux.m  10.6-12.612.610.7-12.711.1-13.111.2-13.2
    Aux.m/min  22191713.29.28
    Crab Travelingm/min4443.744.744.738.63638.9
    Trolley travelingm/min32-3737.530-3532.9-34.552.5338.6-4532.6-38.5
    Installed PowerKW36.5-45.547-5668.3-76.378.3-87.3129.5-145.5143-159185-201
    Max.Wheel LoadKN217-289247-354180-236211-270275~369392-483314-361
    Steel Track RecommendedP43 QU70QU80
    Power Source                 3–phrase A.C. 50Hz 380V

    . Features

    The Advantages of Our Container RMG Crane

    Compact structure, good rigidity, strong lifting capacity, indoor use available

    Its proper lifting weight is 5 to 75 tons,and proper span is 18 to 35 meters.

    Its proper working temperature is -20–+40 centigrade.

    This kind of crane is composed of main beam, A-frame legs, traveling mechanism, trolley, electric equipment, strong lifting winch.

    This product is a regular crane widely used in workshops, storage, port hydroelectric power stations and some other outdoor place, where it has a high frequency or more lifting times.

    It has two controlling methods namely ground controlling and cabin controlling.

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    The Characteristics of Rail-mounted Container Gantry Cranes

    Rail-mounted container gantry cranes have the following characteristics:

    The lifting speed is relatively slow while the main car runs at a higher speed. Based on the requirements of the container yard, the lifting height of the rail-mounted container gantry crane is determined according to the stacking height three-over-four or four-over-five. As the lifting height is not high, the lifting speed is correspondingly lower. However, as the container yard generally has a long length along the running track direction, a higher speed is required for the main car to ensure a certain level of productivity.

    The speed of the trolley can be determined according to the span of the crane and the extension distance at both ends. When the span and the cantilever length are relatively short, a lower trolley running speed and productivity requirement may be acceptable. When the span and the cantilever length are large, the trolley running speed can be correspondingly increased to meet the productivity requirement.

    When the span exceeds 40 meters, during high-speed operation of the main car, offset may occur due to different running resistances on both sides. Consequently, a synchronization device is set up to maintain the synchronicity of the running mechanism on both sides through the electrical control system.

    To meet higher usage requirements, the electrical drive control system adopts thyristor direct current or alternating current speed control system to achieve better speed regulation and control performance. The electrical control system can also adopt conventional alternating current eddy current speed control or alternating current stator pressure regulating speed control system.

    For the electrical control system of the main car running mechanism with higher speed, thyristor direct current, alternating current speed control system, or alternating current stator pressure regulating speed control system with electrical braking are usually used to avoid using the conventional electrical drive system’s braking method during running and parking, which may bring significant impact to the entire machine.

    Container RMG Crane Main Layout Forms

    In addition to the special selection of the lifting mechanism, the trolley running mechanism and the main car running mechanism of the rail-mounted container gantry crane are basically the same as those of other bridge and gantry type cranes.

    Lifting mechanism. The lifting mechanism can be in two forms, wire rope drum type and is basically the same as the tyre-mounted container gantry crane’s lifting mechanism; whereas the rigid telescopic lifting mechanism is similar to the lifting mechanism of a gantry crane with clamps used in steel mills and metallurgy.

    Wire rope drum type lifting mechanism is composed of DC or AC motor, gear couplings, disc or block brakes, medium-hard surface reducer, gear couplings between the reducer and the drum, twin drums and bearing seats. It consists of lifting wire ropes, pulleys, and hoisting pulley groups.

    The rigid telescopic lifting mechanism can be a wire rope drum hoisting mechanism; a hydraulic cylinder hoisting mechanism; a balance weight gear rack hoisting mechanism along with the telescopic guided steel structure. The wire rope drum hoisting mechanism is simple in construction and is similar to other lifting mechanisms. As the steel structure has a certain rigidity, the lifting mechanism can also be divided into two groups, which is advantageous for arrangement. The hydraulic cylinder hoisting mechanism is well-balanced and structurally simple, but requires higher maintenance.

    Trolley running mechanism. The trolley running mechanism is composed of DC or AC motor, gear couplings, disc or block brakes, medium-hard surface reducer, low-speed gear couplings, and cart wheels and wheel supports. The arrangement of the drive mechanism is generally in two ways: along the trolley track direction and perpendicular to the trolley track direction. The number of driving wheels is determined based on conditions without slippage. Modern designs generally use full-drive.

    Main car running mechanism. The main car running mechanism typically uses three or four-wheel trolleys, determined based on the size of the wheel pressure. The construction and form of the running mechanism are similar to other types of cranes. If an open gear drive trolley is used, it is composed of DC or AC motor, gear couplings, brakes, medium-hard surface reducer, open gears, cart wheels and wheel supports; conversely, if an enclosed transmission is used, the output shaft of the reducer is directly connected to the trolley axle for direct drive, but the transmission ratio of the reducer will be slightly larger.

    Due to the faster running speed of the main car and to prevent wheel slippage during braking, electrical control systems such as thyristor DC voltage regulation and speed regulation, AC variable frequency speed regulation, AC stator speed regulation are generally used for good speed control capability.

    To improve the efficiency of yard operations, rail-mounted container gantry cranes are trending towards larger sizes and automation. Furthermore, the development includes the use of high-level structure rail-mounted container gantry cranes that travel at high speed on tracks composed of reinforced concrete columns and rail-carrying beams.

    Rail-Mounted Container Gantry Crane

    Rail-mounted container gantry cranes have begun to be put into use in the world’s major container hub ports. Apart from the necessity to add tracks in the container yard, these cranes excel in terms of stack height, stack positioning accuracy control, anti-sway performance, and the structural stress state compared to tire-mounted container gantry cranes.

    Due to the use of a rail-mounted system, they are able to bear larger loads by increasing the number of wheels. As a result, the span of the rail-mounted container gantry crane has been increased. Since it is powered by a power cable, the power output is stable; an electronic anti-sway system is utilized, and some large international companies are currently developing fully automatic unmanned container anti-sway positioning systems equipped with positioning feedback devices to enhance operational efficiency.

    Container Bridge Crane

    In recent years, container bridge cranes have been developed and utilized abroad. Their basic form is similar to that of a gantry crane, with the lifting height being determined based on the container stacking yard and stack height, as well as the height of the cement overhead passage.

    Container bridge cranes use a skewed box girder structure. To facilitate the placement of electrical system devices, one of the girder sections is larger, providing space not only for the electrical cabinet but also for a walkway. The running trolley is basically similar to other running trolleys. The main feature of the main car running mechanism is its high running speed, significantly improving the efficiency of container loading and unloading.

    Container bridge cranes use a fully automatic electronic anti-sway and positioning control system, and special consideration is given to the anti-sway issue in the direction of main car travel due to its high speed. Two methods, namely the sliding contact line and cable drum, are used for power supply.

    Benefits of Container RMG Crane

    The Rail Mounted Gantry (RMG) crane offers several benefits in the realm of container handling and logistics:

    1. Efficient Container Handling: RMG cranes are designed for efficient loading and unloading of containers from freight trains and trucks, helping to streamline the container handling process at terminals.
    2. Precise Positioning: The rail-mounted design allows for precise horizontal movement and positioning of the crane, enabling accurate alignment with containers and cargo for seamless transfers.
    3. High Lifting Capacity: These cranes are capable of lifting heavy containers, typically ranging from 30 to 80 tons or more, contributing to the rapid movement of freight at container terminals.
    4. Space Utilization: RMG cranes are adept at maximizing space within container terminals, as they can efficiently move containers between storage stacks and various transportation modes.
    5. Automation Capability: Many RMG cranes are equipped with advanced automation features, such as remote control and computerized systems, enhancing operational efficiency and reducing manual labor requirements.
    6. Integrated Logistics Operations: By facilitating the smooth transfer of containers between different modes of transportation, RMG cranes contribute to well-integrated and efficient logistics operations at container terminals.

    These benefits collectively make Rail Mounted Gantry cranes an essential component of container handling operations, contributing to the overall efficiency and productivity of container terminals and logistics facilities.


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