Underslung Crane

An underslung crane is a hoisting system suspended directly from the roof or from a steel support structure, without relying on floor columns for support. The system consists of a main girder, end beams, a hoisting mechanism, and an electrical control system, enabling the longitudinal and transverse movement of loads without occupying floor space. The VOITTO suspension underslung overhead crane system is suitable for loads ranging from 0.5 to 10 metric tons and spans from 3 to 22.5 meters. It is particularly well-suited for factory workshops, warehouses, automotive assembly lines, and maintenance facilities where floor space is limited or where existing building structures prevent the installation of floor-supported crane tracks.

Product Introduction

An underslung crane operates by suspending the main girder directly from tracks mounted on the roof or an existing steel structure, eliminating the need for support columns on the floor, as required by traditional overhead cranes. This design allows the crane to move both longitudinally and transversely, making full use of the available vertical headroom without occupying floor space in the facility.

When faced with limited floor space, building structures unsuitable for installing floor-supported tracks, or the need to upgrade existing facilities without major structural modifications, buyers typically opt for underhung overhead cranes. However, compared to floor-supported systems, overhead cranes have a lower maximum load capacity and a shorter span. Therefore, users must confirm the building structure’s load-bearing capacity, the required load, and the span requirements before selecting a model.

Typically, users employ single-girder underhung overhead cranes in the machinery manufacturing, automotive, and food processing industries to perform material handling tasks.

Advantages

The advantages of suspended cranes stem directly from their installation method: Since the main girder is suspended from the building’s existing roof or steel structure rather than supported by columns on the ground, these cranes offer high space utilization, ease of operation, and low installation and maintenance costs. The following is a summary of the features and advantages of suspended underhung overhead cranes.

• Space-saving: The equipment is installed directly on the existing beam structure of a factory or warehouse, eliminating the need for additional columns or support structures.
• High Flexibility: The equipment is suitable for a variety of operating environments and can meet the needs of general light industrial and warehousing applications.
• Easy Operation: The equipment supports operation via a ground-level control handle or wireless remote control.
• Easy Installation: The equipment has a relatively simple structure, making installation and commissioning convenient and requiring minimal routine maintenance.

Underslung Crane Specification

When selecting an underslung crane, the key parameters to confirm are lifting capacity, span, and lifting height — these determine whether the crane fits your existing roof structure and load requirements. Work duty class reflects how frequently and intensively the crane will operate, while hoist type and control mode affect day-to-day handling. Because an underslung crane relies on the building’s roof or steel structure for support, building structural capacity should always be verified alongside these specifications.

Application

Underslung overhead cranes do not take up floor space, making them ideal for work environments where floor space is limited but material handling at height is still required.

• Factory Workshops: Users control the equipment to perform material handling tasks on production lines.
• Warehousing and Logistics: Operators use the equipment to handle, load, unload, and stack heavy cargo within warehouses.
• Automotive Manufacturing: Users control the equipment to transport vehicle bodies, engines, and large components along assembly lines.
• Maintenance Workshops: Operators use the equipment to handle large components during aircraft and train maintenance.

Underslung Crane vs Overhead Crane

Underslung Overhead Crane Cost Factors

The price of an underslung overhead crane depends on a variety of factors: lifting capacity, span, and lifting height are the primary cost determinants, followed by hoist type, duty class, and electrical control components. Below, I will list the price ranges for suspended overhead cranes with different configurations for reference only; actual prices are subject to specific specifications.

Underslung Crane Manufacturers

Choosing the right underslung crane manufacturer means confirming that load capacity, span, and building compatibility are properly engineered for your facility — not just supplied off a catalog. VOITTO designs and manufactures underslung cranes to order, covering everything from initial layout consultation to production, quality inspection, and after-sales support, with each unit built to meet international safety standards.

For a configuration matched to your building structure and load requirements, our engineering team can review your specifications and recommend a suitable design. If you need a suspended underslung overhead crane solution, please contact us.

Alan

Crane Solutions Specialist · Voitto Crane

10+Years Exp.

5,000+Customers

50+Countries

Specialized in Overhead Crane, Gantry Crane, Jib Crane, Port Crane & EOT Crane export solutions. 10+ years helping global clients with pre-sales consultation, capacity selection and site-specific configurations.

+86 136 3963 3287 [email protected] Contact Us

FAQS

Difference Between Underslung Crane And Eot Crane?

The main beam of an underslung crane is suspended below the roof track, saving floor space but requiring high roof load-bearing capacity. In contrast, the bridge of an overhead crane is installed above the top track. The main difference between the two lies in the support and installation methods of the bridge.

Difference Between Underslung Crane And Explosion-Proof Overhead Crane?

The difference between underslung cranes and explosion-proof overhead cranes lies in their application and structural design. Underslung cranes have main beams suspended below roof tracks, saving space and reducing costs. Explosion-proof overhead cranes, on the other hand, are composed of explosion-proof motors, electrical components, and protective structures, making them suitable for use in flammable and explosive environments.

Difference Between Underslung Crane And European Overhead Crane?

The difference between an Underslung crane and European overhead cranes lies in their structural design. Underslung cranes use roof-mounted suspension tracks for support, with the main beam running beneath the tracks. Different from the underslung crane, the European overhead crane has a lighter weight and smaller structural dimensions at the same lifting capacity.

Does an Underslung Crane Require Floor Columns?

No — it is suspended from the roof or existing steel structure, which is the main reason it saves floor space compared with a conventional overhead crane.

Can an underslung crane be installed in an existing factory?

Yes, provided the existing roof or steel structure can support the additional suspended load — this should be confirmed with an engineering review first.