Underhung Bridge Crane 1-5 Ton | I Beam Single Girder Crane
Short Video Description
This video shows a 1 ton, 2 ton, 3 ton and 5 ton underhung bridge crane with a single girder I beam overhead crane design. The crane is suspended below the runway structure and is designed for indoor material handling where compact dimensions and flexible crane coverage are required.
The single girder underhung bridge crane, also known as an under running overhead crane, underslung crane or suspension crane, travels underneath the runway beam. An I beam can be used as the crane bridge girder or runway structure according to the capacity, span and structural requirements.
Available capacities include 1 ton, 2 ton, 3 ton and 5 ton. These I beam underhung overhead cranes are commonly used in workshops, warehouses, maintenance areas, production lines and machinery plants where the building has limited headroom or where an under-running crane arrangement is preferred.
The suspension crane is supported from the upper building structure or runway system rather than standing on a conventional floor-supported crane runway. The actual support method depends on the building structure, runway beam arrangement and calculated wheel loads.
For a 1-5 ton underhung bridge crane, the main technical parameters include lifting capacity, span, lifting height, runway length, I beam size, available headroom, duty class, hoisting speed and power supply. Yuantai engineers review these parameters together before finalizing the crane design.
Main Technical Specifications
| Item | Technical Specification |
|---|---|
| Crane type | Single Girder Underhung Bridge Crane / I Beam Underhung Overhead Crane / Suspension Crane |
| Rated capacity | 1 Ton / 2 Ton / 3 Ton / 5 Ton |
| Bridge design | Single girder I beam or engineered welded girder |
| Crane arrangement | Underhung / Under Running / Underslung bridge crane travelling below the runway structure |
| Hoist type | Electric chain hoist / Electric wire rope hoist according to capacity and lifting requirements |
| Hoist arrangement | Compact trolley or suspended hoist arrangement below the single girder |
| Span | 5 – 20 m, customized according to building layout and structural requirements |
| Lifting height | 3 – 12 m, customized according to required hook height |
| Runway length | 10 – 100 m+, according to workshop layout |
| I beam | I beam selected according to capacity, span, wheel load and structural calculation |
| Hoisting speed | 2 – 8 m/min, customized according to application |
| Crane travelling speed | 10 – 30 m/min, VFD available |
| Duty class | ISO A3 – A5 / FEM 1Am – 2m, selected according to working frequency |
| Control | Pendant Control / Radio Remote Control |
| Power supply | 380V / 50Hz / 3Ph standard; 400V, 415V, 440V, 460V and 60Hz available |
| Safety devices | Overload protection, upper and lower lifting limit switches, travelling limit switches, emergency stop and buffers |
| Working temperature | Typically -20°C to +40°C, customized for special environments |
| Applications | Workshops, warehouses, maintenance areas, machinery plants, assembly lines, production facilities and indoor material handling |
| Yuantai Crane engineering experience | Yuantai engineers check the I beam, suspension structure, bridge, end carriages, wheels, hoist, wheel loads and building structure as one complete underhung crane system. |
What Is an Underhung Bridge Crane?
An underhung bridge crane is an overhead travelling crane whose bridge runs underneath the runway beams. It is also commonly called an under running bridge crane, underslung crane or suspension crane.
Unlike a conventional top-running overhead crane, the bridge is suspended below the runway structure. The crane wheels travel along the lower flange of the runway beam or an engineered track system.
A single girder underhung bridge crane is particularly suitable for light and medium lifting applications from 1 ton to 5 ton.
What Is an I Beam Underhung Overhead Crane?
An I beam underhung overhead crane uses an I beam or suitable rolled steel beam as the crane bridge or runway member. The crane trolley or end carriage travels underneath the beam.
I beam cranes are often selected for relatively light lifting applications because the beam can provide a simple and economical structural solution when the span and wheel loads are within the allowable range.
The I beam should not be selected only according to lifting capacity. Span, wheel load, beam deflection, trolley arrangement and support structure must also be checked.
Underhung Bridge Crane vs Top Running Overhead Crane
| Item | Underhung Bridge Crane | Top Running Overhead Crane |
|---|---|---|
| Bridge position | Bridge travels underneath the runway | Bridge travels on top of runway rails |
| Support arrangement | Suspended from the upper runway or building structure | Usually supported by runway columns or building structure |
| Typical capacity | 1 – 5 ton for this product range | Available across a wider capacity range |
| Headroom | Can provide efficient use of available vertical space | Depends on girder and hoist configuration |
| Bridge design | Single I beam or engineered girder | Single or double girder |
| Typical application | Light and medium indoor material handling | General industrial material handling |
Where Is a 1-5 Ton Underhung Crane Used?
The underhung bridge crane 1 ton to 5 ton is commonly used for:
- Machine manufacturing workshops
- Equipment assembly plants
- Maintenance and repair workshops
- Warehouses and storage areas
- Automotive and component workshops
- Production lines
- Fabrication facilities
- Industrial maintenance stations
Underhung Bridge Crane Manufacturer & Supplier
Yuantai Crane supplies customized 1 ton, 2 ton, 3 ton and 5 ton underhung bridge cranes for indoor material handling. The equipment can be designed as a single girder I beam overhead crane, under running bridge crane or suspension crane according to the customer's building structure and lifting requirements.
Instead of using one standard I beam size for every project, Yuantai engineers determine the appropriate beam section, wheel arrangement, hoist type and suspension structure based on the actual span, capacity, working class and building conditions.
FAQ: 1-5 Ton Underhung Bridge Crane & I Beam Overhead Crane
Common questions about single girder underhung bridge cranes, I beam overhead cranes, suspension cranes and under running crane systems.
1. What is a 1-5 ton underhung bridge crane?
A 1-5 ton underhung bridge crane is a single girder overhead crane whose bridge travels underneath the runway structure. It is commonly used for indoor light and medium material handling.
The available capacities include 1 ton, 2 ton, 3 ton and 5 ton, with the final design customized according to span, lifting height and building structure.
2. What is an I beam underhung overhead crane?
An I beam underhung overhead crane uses an I beam or suitable rolled beam as the bridge or runway member. The crane travels underneath the beam.
It can provide an economical solution for light and medium lifting applications when the I beam section and building structure meet the required strength and deflection criteria.
3. What is the difference between an underhung crane and a suspension crane?
In many applications, underhung crane and suspension crane describe a similar crane arrangement where the bridge travels below the supporting runway structure.
The exact terminology can vary by market. The engineering design still depends on the runway beam, suspension points, wheel loads, span and building structure.
4. Is an I beam suitable for a 5 ton underhung crane?
An I beam can be used for a 5 ton underhung bridge crane when its section, span, wheel load and deflection meet the engineering requirements.
Yuantai engineers calculate the beam rather than selecting it from capacity alone. The trolley weight, dynamic loads and supporting structure must also be considered.
5. Is an underhung crane suitable for a low-headroom workshop?
Yes. A low headroom underhung crane can make efficient use of the available vertical space because the bridge travels below the runway structure.
The actual hook height depends on the runway elevation, beam depth, hoist dimensions, building height and required safety clearance.
6. What information is needed for an underhung crane quotation?
Provide the lifting capacity, span, lifting height, runway length, I beam dimensions, building height, available headroom, working frequency and power supply.
Photos or drawings of the existing building and runway structure are also useful for checking whether the suspension crane arrangement is suitable.
7. What experience does Yuantai Crane have with underhung cranes?
Yuantai Crane has engineering and manufacturing experience with single girder overhead cranes, I beam cranes, underhung bridge cranes, suspension cranes and under-running crane systems.
For each project, Yuantai engineers check the I beam, bridge, end carriages, wheels, hoist, runway supports, wheel loads and building structure as one complete lifting system.
Need a 1, 2, 3 or 5 Ton Underhung Bridge Crane?
Send us your lifting capacity, span, lifting height, runway length, I beam dimensions, building height, available headroom and workshop layout.
Yuantai Crane can engineer a 1 ton, 2 ton, 3 ton or 5 ton single girder underhung bridge crane with an I beam or engineered girder, suitable for suspension crane, under-running bridge crane and low headroom indoor material handling applications.
Related Videos
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- Underhung Bridge Crane 1-5 Ton | I Beam Single Girder Crane
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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.
Yuantai Cranes
Yuantai Cranes - Global Material Handling Crane Solution Provider & Manufacturer with CE, ISO, SGS, CNEX and other Third Party Certifications.
- Main Specifications - Capacity: 0.5–550 tons | Span: up to 40m | Speed: 0.8–12 m/min | Duty: A3–A7 | Power: 380–690V, 50/60Hz | Control: pendant/remote/cabin
- Full engineering: FEA/PLC/VFD + in-house build + global delivery + on-site support, for workshops, factories, EPC contractors, industrial projects, etc.
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- Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
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- 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)
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