Overhead Crane Types Explained: Single Girder vs. Double Girder
Introduction
In every manufacturing plant, warehouse, or construction site, overhead cranes play a critical role in moving heavy materials safely and efficiently. Yet, one common question buyers often face is: Should I choose a single girder crane or a double girder crane?
Both designs have been proven in countless applications. But the choice depends on more than just budget—it’s about load capacity, space, and long-term reliability. In this article, we’ll explain the differences between single and double girder cranes, and help you decide which one fits your operations best.
What Is a Single Girder Overhead Crane?
A single girder overhead crane is built with one main beam (girder) supporting the trolley and hoist.
Key Features:
- Lighter structure, less steel required
- Typically supports lifting capacities up to 20 tons
- Lower building height required, saving construction costs
Advantages:
- More economical solution
- Easier to install and maintain
- Ideal for workshops, light manufacturing, and warehouses
Limitations:
- Lower lifting height compared to double girder
- Limited for very heavy or continuous lifting tasks
What Is a Double Girder Overhead Crane?
A double girder overhead crane uses two parallel beams, with the hoist running on rails mounted above or between them.
Key Features:
- Handles higher capacities, often 20–500 tons
- Provides greater lifting height and hook travel
- More robust structure, suitable for heavy-duty use
Advantages:
- Can support larger spans and heavier loads
- Allows precise lifting in demanding applications
- Better suited for continuous, intensive operations
Limitations:
- Higher cost and installation complexity
- Requires more building space and stronger support structure
Side-by-Side Comparison
| Feature | Single Girder Crane | Double Girder Crane |
|---|---|---|
| Main Beam | One girder | Two girders |
| Capacity | Up to ~20 tons | Up to 500 tons or more |
| Lifting Height | Limited | Greater lifting height available |
| Cost | Lower, economical | Higher initial investment |
| Applications | Light to medium duty | Heavy duty, continuous lifting |
| Installation | Easier and faster | More complex, requires stronger support |
Which One Should You Choose?
The decision between a single girder and double girder crane depends on your business needs:
- ✅ Choose a Single Girder Crane if:
- You need an affordable lifting solution for light or medium loads.
- Your facility has limited space or height.
- You want easier installation with lower building costs.
- ✅ Choose a Double Girder Crane if:
- You are lifting heavy loads daily.
- You need maximum lifting height and span.
- Your operations demand reliability under continuous duty.
Final Thoughts
There’s no “one size fits all” in overhead cranes. A single girder crane offers simplicity and cost efficiency, while a double girder crane provides strength and long-term performance.
At Kylift, we design and supply both single and double girder overhead cranes that meet international standards. Our team is ready to evaluate your facility, your lifting requirements, and recommend the most suitable solution.
👉 Contact us today to discuss your lifting needs and explore the right crane for your business.