Double Girder Running Cranes with Space-Saving Installation Height

Many companies face the challenge of achieving high lifting heights within industrial halls with limited headroom. The GD-developed ZL-SL space-saving double-girder overhead crane offers a cost-effective and intelligent solution, combining the best features of single- and double-girder cranes to deliver optimal space utilization and maximum lifting performance without compromise.

The key innovation of the ZL-SL crane system lies in its low-headroom design, achieved by embedding the hoist unit between the two main girders. This unique setup minimizes the overall crane height and allows for the highest possible top hook position, even in buildings with restricted installation height. The underslung trolley, proven in single-girder systems, has now been successfully integrated into a double-girder configuration, delivering outstanding results.

The double-girder design offers greater load capacity and enhanced stability, making the ZL-SL crane suitable for heavy-duty lifting operations, even in halls with low ceilings. Additionally, the system is available in a ZH-SL configuration (suspended version), which ensures optimal side hook approach, allowing you to utilize every square meter of crane coverage efficiently.

GD’s space-saving cranes are built using premium-quality chain hoists from Stahl Cranesystems GmbH, offering safe and efficient lifting within the 1–6.3 ton capacity range. The drive systems can be customized to meet specific user requirements: available options include two-speed drives for both rapid and precise movements, or infinitely variable frequency-controlled drives for precise positioning, ideal when handling sensitive loads.

Both ZL-SL and ZH-SL cranes are not only space-saving but also highly durable, easy to maintain, and perfectly suited to modern industrial environments where performance, reliability, and optimized spatial use are key priorities.

If you’re looking for a compact yet powerful lifting solution that ensures maximum efficiency even in confined spaces, the GD space-saving overhead cranes are your ideal choice. Request a custom quote today, and let us help you find the crane system best suited to your operational needs!

Frequently Asked Questions

What makes the ZL-SL crane system “space-saving”?
The hoist is mounted between the two main girders, minimizing crane height and maximizing the top hook position, ideal for buildings with low headroom.

What are the advantages of the double-girder design?
Double girders offer increased load capacity, greater stability, and improved structural performance—perfect for heavy-duty applications.

What lifting capacities are available?
The ZL-SL system uses high-quality chain hoists and supports load capacities from 1 to 6.3 tons.

What is the difference between ZL-SL and ZH-SL configurations?

• ZL-SL: Top-running version for high lifting heights.
• ZH-SL: Underslung (suspended) version with optimized side hook approach for enhanced space utilization.

Can this crane be installed in existing buildings?
Yes. The space-saving design is ideal for retrofitting into buildings with limited ceiling height and can often be installed without significant structural modifications.

What drive options are available?
You can choose between two-speed motors for basic operations or frequency-controlled drives for precise, smooth positioning.