In the heart of modern manufacturing, logistics, and warehousing, the ability to move heavy materials safely and efficiently is not just a luxury; it is a necessity. For over 30 years, Zehua Heavy Industry has been at the forefront of designing and manufacturing material handling solutions that power industries worldwide . Among our most versatile and sought-after products is the Electric Single Girder Overhead Travelling Crane.This comprehensive guide explores everything you need to know about this indispensable piece of equipment, from its core components and technical specifications to its key advantages and diverse applications.
What is an Electric Single Girder Overhead Travelling Crane (EOT Crane)?
An Electric Single Girder Overhead Travelling Crane, also known as LD type single girder EOT crane, is the most widely adopted light-to-medium duty overhead lifting equipment for indoor industrial facilities. It consists of a single box-section main girder, two end carriages, an electric wire rope/chain hoist trolley, full electrical control system and multi-layer safety protection devices.
Mounted on fixed overhead runway rails installed on factory building columns, the crane delivers three-dimensional movement: full bridge longitudinal travel along the workshop, trolley cross travel on the main girder, and vertical lifting & lowering via the electric hoist. Unlike double girder overhead cranes, the single girder design features lighter self-weight, compact overall size and lower headroom occupation, making it the optimal lifting solution for factories with limited roof clearance and medium load demands (1–20 tons).
Zehua Heavy Industry strictly manufactures all single girder EOT cranes complying with international ISO standards and Chinese JB/T1306 & GB3811 industrial norms, with stable structural performance and long service life up to 20 years under standard A3-A5 working duty cycles.
Core Structural Components of Zehua’s Single Girder Overhead Crane
Every Zehua electric single girder overhead travelling crane adopts modular integrated design for easy transportation, on-site assembly and daily maintenance. Key components include:
1.Main Box Girder: High-strength welded box steel beam with pre-camber design to eliminate load deflection, shot-blasted anti-rust treatment, long anti-corrosion lifespan.
2.End Carriages: Equipped with wear-resistant driving wheels, buffer stops and anti-derailment blocks to prevent runway derailment during operation.
3.Electric Hoist Trolley: Optional CD1/MD1 wire rope hoist or European low-headroom chain hoist; variable frequency (VFD) drive for smooth, shock-free lifting.
4.Dual Control System: Three operation modes available – pendant wired control, wireless remote radio control, and small driver cabin control to match different workshop layouts.
5.Complete Safety System: Overload limiter, height travel limit switch, end travel buffer, emergency stop button, phase loss protection, anti-collision device and warning alarm light.
6.Electrical Cabinet: IP54 waterproof dustproof electrical components, stable voltage adaption for global power supply (380V/50Hz, 440V/60Hz customizable).
Technical Specifications and Models
Electric Single Girder EOT cranes are highly customizable to meet specific operational needs. They are available in various standard and custom configurations.
One of our most popular models is the LD type single-girder crane, known for its compact structure, good rigidity, and high safety . The LDA model, an improved variant, offers a more reasonable structure and higher strength steel .
| Lifting Capacity | 0.5 tons to 32 tons |
| Span | 7.5 meters to 31.5 meters |
| Lifting Height | 3 meters to 30 meters (custom up to 50m) |
| Working Duty | A3 (Light), A4 (Medium), A5 (Heavy) |
| Power Supply | 3-phase AC, 380V/400V/415V, 50Hz/60Hz |
| Lifting Speeds | Single speed (e.g., 8 m/min) or Double speed (e.g., 8/0.8 m/min) |
European Design vs. Traditional Cranes
The market is seeing a growing shift toward European-style single girder cranes. Unlike traditional designs that often rely on a combination of box girders and I-beams, European-style cranes feature a box-type main beam with a more streamlined design and integrated, lightweight hoists .
The advantages of the European design are significant:
1.Lightweight & Compact: They are lighter and have smaller overall dimensions for the same lifting capacity, reducing the load on the building structure .
2.Increased Lifting Height: The design minimizes the hook-to-wall distance and headroom, maximizing the usable workspace .
3.Energy Efficiency: They consume less power than conventional models, leading to long-term cost savings .
4.Smoother Operation: They are known for quieter operation and higher positioning accuracy .
Key Advantages
The Electric Single Girder Overhead Crane offers a compelling value proposition for businesses:
1.Cost-Effectiveness: It represents a significantly lower initial investment—often 30-50% cheaper than a double girder crane—and requires less structural support, reducing installation and foundation costs .
2.Space Efficiency: The compact design is ideal for facilities with space or height restrictions .
3.Operational Efficiency: With smooth, electric-powered operation and precise load positioning, it streamlines workflows and reduces manual effort .
4.Safety: Integrated safety features like overload limiters, emergency stop buttons, and fail-safe brakes protect both personnel and equipment .
5.Flexibility: With a modular design, multiple control options (pendant, remote, cabin), and customizable spans and capacities, the crane can be tailored to specific needs .
Safety Features: A Core Design Principle
Safety is paramount in any lifting operation. Modern electric single girder cranes are equipped with multiple safety mechanisms:
1.Overload Limiter: Prevents the crane from lifting loads exceeding its rated capacity .
2.Emergency Stop: Allows for immediate power cutoff in an emergency .
3.Limit Switches: Prevent the hook from over-traveling in both the up and down directions .
4.Fail-Safe Brakes: Hold the load securely in the event of a power failure .
Applications Across Industries
Due to their versatility and efficiency, these cranes are used across a broad spectrum of industries. They are ideally suited for:
1.Manufacturing: Moving raw materials, components, and finished goods between production stages .
2.Warehousing & Logistics: Loading and unloading trucks, stocking inventory, and order picking .
Automotive: Handling engine blocks, transmissions, and other heavy parts on assembly lines .
Steel & Metal Fabrication: Transporting steel coils, plates, and fabricated structures .
Why Partner with Zehua Heavy Industry for Your Overhead Crane?
Zehua Heavy Industry is a professional Chinese overhead crane manufacturer with over 15 years of R&D and export experience, serving industrial clients from Southeast Asia, Africa, Europe and South America.
1.Independent R&D & Factory Direct Supply: No middlemen, competitive factory price with full technical drawing support for project bidding.
2.One-Stop Solution: Provide runway rails, crane accessories, installation guidance and after-sales spare parts together with the crane main body.
3.Global After-Sales Service: Offer remote video debugging, overseas engineer dispatch service and long-term spare parts supply.
4.Customized Drawing & Quotation: Send your workshop size, lifting tonnage and working requirements, our technical team will provide tailored design drawing and accurate quotation within 24 hours.
5.Complete Certifications: CE, ISO, factory inspection certificate, full load test report for customs clearance in all countries.
Conclusion
The Electric Single Girder Overhead Travelling Crane is the workhorse of modern industry, offering an optimal balance of performance, cost, and safety. Its simple yet effective design provides reliable material handling for countless operations, making it an essential tool for improving productivity and reducing the burden of heavy labor .
At Zehua Heavy Industry, we are committed to providing high-quality, custom-engineered lifting solutions. With our extensive experience and dedication to excellence, we ensure that every crane we deliver meets the highest standards of quality and reliability .
Whether you are upgrading your facility or equipping a new one, choosing the right crane is critical. Contact Zehua Heavy Industry today to discuss your specific requirements and discover how our electric single girder overhead travelling cranes can transform your material handling operations.
ZEHUA CRANES is a leading crane manufacturer in China. With decades of industry experience, we have become a trusted partner in the global material handling solution field. We are committed to providing comprehensive professional services tailored to your specific needs. We recommend the most suitable crane products, offer accurate quotations, and design customized solutions. Welcome to contact us.
HENAN ZEHUA HEAVY INDUSTRY EQUIPMENT CO., LTD
Email: sale@zehuacranes.com
Website: [https://www.zehuacranes.com/]
Whatsapp：86-19562739544
