What Are the Main Parts of a 32–50 Ton RMG Container Gantry Crane?
Short Video Description
This video introduces the main parts and components of a 32–50 ton Rail Mounted Container Gantry Crane (RMG).
You can see the main crane structure, trolley system, hoisting mechanism, rail travelling system and electrical control components.
For container yard buyers, these parts work together to lift, travel and position 20 ft and 40 ft containers safely and efficiently. The crane can also be customized for different yard layouts, lifting heights, spans and working conditions.
main parts and components of rail mounted gantry crane
Main Technical Specifications
| Item | Specification |
|---|---|
| Crane type | Rail Mounted Container Gantry Crane (RMG) – Port/Container Yard Model |
| Rated capacity | 32–50 ton (under spreader; typical models: 32T, 35T, 40T, 45T, 50T) |
| Application | Container Yard / Port / Logistics Terminal / Intermodal Depot |
| Project locations | China ports / Southeast Asia / Middle East / Africa / Europe / Americas |
| Container type | 20 ft / 40 ft / 45 ft ISO Containers – standard and high-cube |
| Container stacking | Up to 6 containers high (depending on lifting height) |
| Gantry structure | Customized Single or Double Girder Structure – welded box girder with high torsional stiffness |
| Travelling system | Rail Mounted – steel wheels on crane rail (QU80/QU100/QU120) |
| Wheel configuration | 8 / 12 / 16 wheels with multiple driven axles for heavy loads |
| Rail gauge | Customized: typically 10m – 35m (container yard span) |
| Trolley | Motorized Trolley – with frequency-controlled travel motor |
| Hoisting system | Electric Wire Rope Hoist / Winch Trolley – dual winch for container lifting |
| Spreader | Container Spreader – manual or hydraulic twist-lock (20ft/40ft telescopic option) |
| Spreader operation | Hydraulic / Manual twist-lock with indicator lights |
| Span | 12 – 40 meters (customized according to yard layout – number of container rows) |
| Lifting height | 6 – 30 meters (customized according to stacking requirements – up to 6+ container stacks) |
| Travelling distance (rail length) | 100 – 1000+ meters (customized per yard length) |
| Hoisting speed | 2 – 15 m/min (with VFD for precision container handling) |
| Trolley speed | 5 – 40 m/min (VFD controlled for smooth positioning) |
| Crane travelling speed | 5 – 50 m/min (frequency controlled for efficient yard operation) |
| Wheel base (longitudinal) | 6 – 12 meters (designed for stability with full container load) |
| Maximum wheel load | ≤ 20 – 35 t per wheel (designed per rail and yard ground capacity) |
| Working duty class | A6 – A8 (FEM / ISO) – heavy continuous service for port operations |
| Control | Cabin Control (standard for ports) / Radio Remote Control / Semi-automatic option |
| Control system | PLC-based with AC frequency drives – CAN bus communication |
| Power supply | 380V/50Hz/3Ph (standard) / 440V/60Hz/3Ph / 400V/50Hz / Cable reel or conductor bar |
| Safety features | Overload limiter, anti-sway system, container position indicator, wind speed alarm, anti-collision system, emergency stop, buffer stops, rail clamps |
| Design standards | GB/T 3811, FEM, IEC, ISO 9001, CE, ASME, port authority requirements |
| Yuantai Crane expertise | Project highlights – RMG container cranes: • China – major container ports: Yuantai has supplied RMG cranes to Tianjin, Qingdao, Shanghai, Shenzhen, and Ningbo-Zhoushan ports for 24/7 container handling operations. • Southeast Asia – port expansion: Exported 40T RMG with 30m span and 20m lifting height – 6+ high stacking with hydraulic spreader and remote control. • Middle East – logistics hub: Delivered 45T RMG with 35m span for intermodal container yard – dual trolley configuration with high-speed operation. • Africa – new port terminal: Supplied 32T RMG with cable reel power and full cabin control for greenfield port project. • South America – container depot: 50T RMG with 16-wheel configuration for heavy container handling in coastal environment with corrosion-resistant coating. Special design features for container RMG: – Anti-sway technology for accurate container positioning (±50mm) – Telescopic spreader options (20ft/40ft/45ft) – GPS / container positioning system for automated operation – Heavy-duty rail clamps for wind resistance – Operator cabin with 360° visibility and climate control Global RMG experience: Yuantai has delivered rail-mounted container gantry cranes to ports and logistics terminals in China, Southeast Asia, India, Middle East, Africa, Europe, Russia, and South America. Customization: Each RMG is engineered based on yard layout – number of container rows, stacking height, container throughput, power availability, wind conditions, and local safety standards. |
How Can a 32–50 Ton RMG Crane Be Customized?
Container yards are not all built the same. The crane should be designed around the yard layout.
Possible customization includes:
- 32 ton, 40 ton or 50 ton capacity
- Different crane spans
- Different lifting heights
- 20 ft / 40 ft container spreader
- Different rail gauges
- Different trolley speeds
- Different crane travelling speeds
- Cabin or remote control
- Anti-sway and positioning functions
- Customized electrical configuration
Yuantai Crane RMG Container Handling Solutions
Yuantai Crane supplies customized RMG gantry cranes and container handling equipment for different yard and industrial applications.
The crane can be configured according to the buyer's container size, rated load, span, lifting height, rail gauge, stacking requirement, working frequency and yard layout.
The engineering starts with the container handling job, not simply the number written after the word "ton."
What Information Should Buyers Provide?
For a proper RMG quotation, buyers should provide:
- Rated lifting capacity
- 20 ft / 40 ft container requirement
- Maximum container weight
- Stacking height
- Crane span
- Rail gauge
- Lifting height
- Rail travelling distance
- Working frequency
- Power supply
- Control method
- Yard layout or drawing
A yard layout is especially useful because it allows the crane span, rail position, lifting height and travelling distance to be checked before finalizing the design.
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Article by Bella ，who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.
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- Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
- Max weight to lift:_____ tons. (e.g., 2t, 5t, 10t, 20t, 50t)
- Lifting height:_____ m. (How high does the hook need to reach?
- Workshop width (span):_____ m . (Distance between the two crane rails)
- Travel distance:_____ m . (How long does the crane need to move along the runway?)
- Control type:_____. (Pendant / remote / cabin Control)
- Power supply:_____. (Local voltage & frequency – e.g., 380V, 50Hz, 3-phase)
- What will it be used for?_____ (e.g., steel fabrication, concrete products, mold handling, general manufacturing, etc.)
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