Single girder heavy-duty gantry crane

Authentication mark:

This crane is mainly used in steel service centers, heavy equipment assembly yards, and precast concrete factories.

Capacity:

10 t – 50 t customizable

Lifting Height:

6 m – 20 m

Span:

15 m – 35 m customizable

Voltage/Hertz:

380V / 50Hz / 3-phase

Working Class:

A5, A6, A7 (Medium to heavy duty for frequent operation)

Get A Free Quote

Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

What is this?

The single girder heavy-duty gantry crane is a gantry crane featuring a reinforced single main beam structure. It uses an electric hoist or electric trolley to lift and lower loads and move left and right, with legs running on ground rails, achieving precise lifting and handling of heavy materials, large equipment, steel structures, prefabricated components, and more. If you need lifting capacity from 10 tons to 50 tons but have a limited budget or constrained foundation conditions that cannot accommodate a double girder gantry crane, this product is designed for you.

Why choose a single girder heavy-duty gantry crane over a double girder gantry crane?

Compared to double girder gantry cranes, the single girder heavy-duty solution offers four core advantages:

First, lower investment cost – reinforced single girder structure reduces overall self-weight by 15%-25% compared to double girders, significantly lowering costs, suitable for budget-limited projects.

Second, shorter installation time – simpler structure with lower rail foundation requirements, reducing installation and commissioning time by about 30%.

Thid, greater headroom – the single girder occupies less space, providing higher effective lifting height under the same building clearance.

Fourth, lower maintenance cost – simple structure with fewer failure points, resulting in less daily inspection and maintenance workload.

Get close to double girder load capacity with a more economical investment.

What can we do for you?

We understand that every customer has different capacity requirements, different spans, and different site conditions. Therefore, we offer flexible customization options: lifting capacity from 10 tons to 50 tons; span from 15 meters to 35 meters; control options of cabin, remote radio, or pendant; VVVF speed control for smooth start/stop; leg types of A-frame or L-frame. Whether your site is an outdoor stockyard or an indoor workshop, we can match the most suitable span and lifting height.

Unsure? Don't know?

Not sure whether a single girder heavy-duty crane can meet your capacity needs? Don't know what span and lifting height you require? No problem. Just tell us: your maximum lifting capacity, your stockyard span or width, 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 material types and site dimensions, and we will calculate for you.

APPLICATION SCENARIO

[1] Steel Service Centers – Lifting steel coils, plates, and bars for storage and shipment.

[2] Heavy Equipment Assembly Yards – Moving large components such as transformer bodies, mining equipment parts, or wind turbine sections.

[3] Precast Concrete Factories – Hoisting concrete beams, pipes, and heavy molds.

[4] Railway Maintenance Depots – Lifting locomotive bodies, wheelsets, and heavy spare parts.

[5] Port Auxiliary Areas – Handling heavy cargo containers or machinery on secondary wharves.

ADVANTAGES

[1] High Load Capacity in Single Girder – Reinforced design allows heavy lifting (10‑50t) with lower cost than double girder.

[2] Cost-Effective for Medium Spans – Ideal for spans up to 30m where double girder would be over‑specified.

[3] Durable and Reliable – Heavy‑duty wheels, sealed bearings, and robust structure for tough environments.

[4] Easier Maintenance – Single beam provides good access to hoist and trolley components.

[5] Flexible Power Options – Available with pendant, radio remote, or cabin control.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

Parameter	Specification
Working Class	A5, A6, A7
Capacity	10 t – 50 t
Span	15 m – 35 m
Lifting Height	6 m – 20 m
Lifting Speed	4 – 12 m/min
Trolley Travelling Speed	20 – 35 m/min
Crane Travelling Speed	20 – 40 m/min
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 – IP55, Insulation class F or H
Girder Type	Single Girder – Heavy-duty reinforced box section

Six core advantages

Full Scenario Coverage

Nucleon covers over 20 product categories including ladle cranes, multi-purpose cranes, intelligent cranes, overhead/portal cranes, RTG, RMG, deck cranes, portal cranes, girder launchers, yacht cranes, KBK, and jib cranes. From steel smelting to port handling, bridge construction to ship equipment, Nucleon provides one-stop lifting solutions. Whether standard models or extreme-condition customizations, Nucleon possesses mature technical expertise and proven track records, saving customers from dealing with multiple suppliers.

Military-Grade Quality Standards

We use high-strength steel from Baosteel/Ansteel for key structural components, with 100% NDT inspection and one-clamp CNC gantry machining. Every machine undergoes 120% dynamic load and 125% static load tests before delivery, with continuous operation verification under extreme conditions. Even in 24/7 continuous casting plants, -40°C arctic ports, or high-temperature humid ship cabins, our cranes maintain millimeter-level precision and zero-drift stability—quality that stands the test of time.

Extended Longevity & Low Maintenance Cost

Our main girders are FEA-optimized and double-submerged arc welded, with a design life of ≥30 years. Key bearings are lifetime lubrication-free, and hardened travel wheels extend wear cycles by 3 times. Core components feature modular quick-change interfaces with spare parts commonality exceeding 80%. Annual maintenance costs are reduced by 40%~60%, saving millions in lifecycle operating expenses — truly "invest once, benefit long-term."

Energy Efficiency Leader

Our entire series comes standard with IE5 permanent magnet synchronous motors + energy feedback VFD drives, achieving 25%~35% comprehensive energy savings. Single-motor operation under light loads and adaptive speed control reduce electrical waste by over 30%. High-strength steel lightweight design cuts deadweight by 15%~20%, lowering workshop load requirements. A single ladle crane station saves over RMB 150,000 in electricity costs annually, helping customers achieve green and low-carbon production.

Ultimate Safety Redundancy Design

Our hoisting mechanism comes standard with dual brakes + mechanical overspeed switch + triple limit switches, featuring multiple redundant interlocks to prevent load dropping and over-traveling. Large products use box girder torsion-resistant structures, remaining stable even in level 8 gusty winds. Optional intelligent safety monitoring systems detect anomalies in load, skew, wind speed, etc., with automatic alarms and shutdowns. Overall safety redundancy coefficient > 2.0, maintaining zero crane safety incidents for many consecutive years.

Deep Customization & Full Lifecycle Service

We provide complete front-end support from site survey and mechanical simulation to civil review, delivering custom drawings within 2 weeks, with non-standard lead times only 5~7 days longer than standard products. We establish lifelong digital dossiers for customers, warning of end-of-life components 3 months in advance. Our full lifecycle services cover installation training, regular inspections, and remote O&M. With customer repeat purchase rates exceeding 85% for five consecutive years, we are a trustworthy long-term partner.