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Double Girder Overhead Crane

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Double-girder bridge cranes are widely used in heavy industries such as steel and metallurgy, heavy machinery manufacturing, shipbuilding and Marine engineering
Capacity:
5 t – 500 t+ customizable
Lifting Height:
6 m – 30 m (customizable based on building clearance)
Span:
10.5 m – 31.5 m customizable
Voltage/Hertz:
380 volts /50 Hertz
Working Class:
A5, A6, A7, A8
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Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

What is this?

The double girder overhead crane is a bridge crane featuring a double main beam structure. Through the coordination of hoisting and traveling mechanisms, it achieves precise lifting and handling of heavy materials, large equipment, molds, workpieces, and more. If you are looking for a crane with strong load capacity, stable operation, and suitability for frequent heavy-duty use in a heavy manufacturing workshop, machine shop, warehouse, or stockyard, this product is designed for you.

Why choose a double girder overhead crane over a single girder overhead crane?

Compared to single girder overhead cranes, the double girder overhead crane offers four core advantages:

First, stronger load capacity – the double main beam structure provides lifting capacity from 5 tons to over 500 tons, meeting heavy material handling requirements.

Second, higher lifting height – the trolley runs between the two girders, offering greater headroom and achieving higher effective lifting height under the same building clearance.

Third, smoother operation – higher structural rigidity of the double girders results in less deflection over long spans, providing smoother trolley travel and more precise positioning.

Fourth, wider application – compatible with various lifting attachments such as main/auxiliary hooks, magnets, grab buckets, and spreaders to suit diverse operational needs.

Take on heavier tasks with a stronger structure.

What can we do for you?

We understand that every customer has different capacity requirements, different workshop spans, and different operating frequencies. Therefore, we offer flexible customization options: lifting capacity from 5 tons to over 500 tons; span from 10.5 meters to 31.5 meters; main/auxiliary hook ratios such as 50/10t, 100/20t, etc.; control options of cabin, remote radio, or pendant; VVVF speed control for smooth start/stop. Whether your workshop is narrow and compact or wide and spacious, we can match the most suitable span and lifting height. Unsure? Don't know? Not sure whether to choose a single girder or double girder? Not sure what main/auxiliary hook capacity ratio you need? No problem. Just tell us: the maximum weight of the objects to be lifted, your workshop span, and your required lifting height. Our engineers will provide you with an accurate quote and CAD drawings within 24 hours. Click the button below or contact us via WhatsApp/email to get your customized solution. 💡 Tip: We offer free selection consulting. Even if you are unsure about specific parameters, feel free to describe your workshop dimensions and handling needs, and we will calculate for you.

APPLICATION SCENARIO

1.Iron & Steel and Metallurgical Industry Lifting ladles, steel coils, plates, billets, scrap steel and other high-temperature or heavy materials, suitable for high-temperature, dusty and continuous operation environments.

2.Heavy Machinery Manufacturing & Equipment Industry Used for lifting, assembling and flipping heavy components such as large machine tools, mining machinery, construction machinery, and wind power equipment.

3.Shipbuilding & Offshore Engineering For assembling, closing and tilting hull sections, large steel plates, engines, propellers and other heavy components, achieving long-span and high-precision lifting.

4.Energy & Power and Port Logistics Lifting rotors, stators and transformers in power plants (nuclear, thermal, hydroelectric); loading/unloading and transferring containers, heavy bulk cargo and large structural parts at port yards and railway freight stations.

ADVANTAGES

1.Large load capacity, high duty class The double girder structure provides excellent rigidity and strength, lifting capacity up to over 500 tons, duty class up to A8, suitable for continuous and high-intensity operations.

2.Long span, flexible headroom Compared with single girder, double girder cranes can easily achieve spans over 30 meters, and the crane height can be optimized to improve workshop space utilization.

3.Smooth operation, precise positioning Equipped with frequency conversion and intelligent control technology, achieving smooth start/stop and millimeter-level positioning, meeting the requirements of precision assembly and heavy workpiece alignment.

4.High reliability, easy maintenance Key components adopt modular design and maintenance-free technology, low failure rate; the double girder structure allows convenient walkway arrangement, making daily inspection and maintenance safer and easier.

5.Strong adaptability, customizable Can be equipped with explosion-proof, insulation, high-temperature resistance, magnetic lift, grab, special spreaders and other functions to meet special environments such as metallurgy, chemical, and explosive atmospheres.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

Parameter Specification
Working Class A5, A6, A7, A8
Capacity 5 t – 500 t+
Span 10.5 m – 31.5 m
Lifting Height 6 m – 30 m customizable
Lifting Speed Main hook: 4 – 12 m/min Auxiliary hook: 6 – 15 m/min
Trolley Travelling Speed 35 – 45 m/min (VVVF optional for precise positioning)
Crane Travelling Speed 65 – 90 m/min (VVVF optional for smooth start/stop)
Control Method Cabin control / Remote radio control / Pendant control
Power Supply 380V / 50Hz / 3-phase
Temperature -20°C to +50°C
Protection Grade Motor: IP54, Insulation class F or H
Girder Type Double-girder – Two main beams with full-penetration welded box section