The single-girder suspension bridge crane is typically installed on I-beams or similar structures.
The crane's traveling wheels are directly suspended under these steel beams and move along their bottom edges. This setup allows the bridge crane to utilize the existing building structure as support, thereby reducing the cost of constructing additional ground tracks. Due to its suspended design, it does not require extra supporting structures for crane rails, making the overall structure lighter and more flexible—although this also limits its maximum load capacity.
It is suitable for areas with limited space or where ground rail systems are not feasible.
For example, suspended bridge cranes are ideal for renovation projects of older factories, or in locations with low lifting capacity requirements and cost-saving needs. Unlike standard single-girder bridge cranes, it features a simple structure and is easy to maintain. The primary lifting mechanism is a CD/MD type wire rope electric hoist.
Single-girder suspension bridge cranes are widely used in factories, warehouses, docks, and other material-handling locations.
They are suitable for medium to light-duty applications, such as parts assembly lines, warehousing, and logistics. Common application industries include machinery manufacturing, the automotive industry, and food processing.
The single-girder suspension bridge crane is mainly used in material handling environments that heavily rely on building structures. It is especially suitable for renovating old factories, tight spaces, or locations where ground rails cannot be installed. Suspended from I-beams or steel supports on the ceiling, it saves floor space and reduces construction costs.
It is widely used in industries such as machinery manufacturing, automotive, light industry, food processing, and logistics warehousing, and is suitable for medium and light load handling tasks such as parts assembly and finished goods transportation.
Compared to double-girder bridge cranes, single-girder bridge cranes have a lower cost, making them suitable for enterprises with limited budgets.
With a compact design and low building height requirements, they are ideal for installation in existing structures.
The relatively simple structure allows for convenient installation and commissioning, with minimal daily maintenance required.
| The general details of single beam suspension overhead crane | |
| Rated Capacity | 0.5ton, 1ton, 2ton, 3ton, 5ton, 10ton |
| Span(rail to rail center) | 3m~16m |
| Lifting height | 6m, 9m, 12m, 18m, 24m, 30m |
| Lifting speed(m/min) | 8(or 8/0.8), 7(or 7/0.7) |
| Cross travelling speed(m/min) | 10, 20, 30 |
| Long travelling speed(m/min) | 10, 20, 30 |
| Duty Class | A3/A4 |
| Power source | 380V, 50HZ, 3 phase (or other standard) |
| Working temperature | -20~40℃ |
| Control model | Pendant pushbutton or remote control |
1. Industry Position
Founded in 2006, Dafang Heavy Machinery covers an area of 1,580 acres and employs over 2,600 people. With an annual sales revenue of 3.566 billion RMB, the company focuses on two main business sectors: lifting machinery and steel structures. Major products include single and double girder bridge and gantry cranes, electric hoists, steel structure bridges, prefabricated buildings, and industrial plants. Dafang serves critical sectors such as military industry, aerospace, nuclear power, offshore engineering, metallurgy, and mining. Its products are exported to over 100 countries and regions, including the United States, Russia, and Southeast Asia.
Annually, Dafang manufactures 30,000 single-girder cranes, more than 12,000 double-girder and gantry cranes, and 30,000 electric hoists. Based on production scale, sales volume, and brand recognition, the company ranks among the top three in China’s crane industry.
2. Core Technologies
Dafang’s R&D team consists of over 260 members, including 104 with senior or intermediate engineering qualifications. The company invests 3.8% of its annual sales into technology development. It has obtained 12 international invention patents, 50 national invention patents, 415 utility model patents, and achieved 43 scientific and technological milestones. Dafang was the first in the industry to adopt anti-sway and automatic positioning technologies.
In 2016, Dafang became the first enterprise in Henan Province to implement smart crane applications and to introduce remote monitoring technology. The company also developed the multifunctional brewing crane, filling a domestic market gap. In 2021, Dafang was the first in the industry to be certified for unmanned intelligent cranes. In 2022, it undertook a project for a tower crane at a commercial satellite launch site.
3. Manufacturing Capability
Dafang Heavy Machinery is equipped with advanced in-house designed manufacturing equipment, including 1,500-ton press grooving machines, extrusion machines, and roller machines. The company has established leading domestic workshops, including an electrical assembly line, steel pre-processing line, paint finishing line, and China’s first practical single-girder lean production line. Precision machinery includes imported German NILES CNC gear grinding machines and Japanese MAZAK machining centers.
Dafang strictly follows refined manufacturing processes, adhering to the principle of “doing it right the first time, zero defects.” This commitment to quality is deeply ingrained in every employee, ensuring that every product delivered meets the highest standards.
4. Service Assurance
Dafang upholds a “comprehensive, high-quality” service standard, providing users with fast, attentive, and thorough one-stop services. With 24/7 online support, choosing Dafang means complete peace of mind. Just tell us what you need—we’ll take care of the rest.
The standard lifting capacity ranges from 0.5 to 10 tons, with custom options available for higher capacities.
No, the crane runs directly beneath existing I-beams or structural supports without the need for additional ground rails.
The structure is simple, and installation is quick, usually requiring no major civil construction.
It is especially suitable for workshops with low ceilings, limited space, or those undergoing renovation.
It typically comes equipped with a CD/MD type wire rope electric hoist, ensuring smooth lifting and easy maintenance.
