A Guide to Single-Girder Crane Types and Solutions

Selecting the right Overhead Crane is pivotal for operational efficiency. Single-girder cranes offer a versatile and economical lifting solution for capacities up to 20 tons, perfect for diverse industrial settings. This guide details the main types, specifications, and ideal applications to help you identify the optimal crane for your facility.

Common Workshop Challenges and Crane Solutions:

- Low Roof Clearance: How can you maximize lifting height when vertical space is limited?

- Older Buildings with Low Corbels: What solution best adapts to existing, restrictive structural supports?

- Roof-Mounted Needs in Column-Free Workshops: What system is safe and effective when the roof is the primary load-bearing structure?

- Harsh or Non-Electrified Environments: Are there reliable options for areas where standard electrical equipment isn't suitable?

Exploring Single-Girder Overhead Crane Types:

Understanding the different types available is key to matching the crane to your specific operational needs.

Standard Electric Single-Girder Overhead Crane	Low Headroom Single-Girder Overhead Crane	Underslung Single-Girder Overhead Crane
FEM/DIN Standard Single-Girder Overhead Crane	Offset Trolley Single-Girder Overhead Crane	Manual Single-Girder Overhead Crane

1. Standard Electric Single-Girder Bridge Crane

Also known as Single Girder EOT (Electric Overhead Traveling) Cranes, these are the most common and cost-effective solution for general material handling.

• Overview: Designed for reliability and ease of maintenance, they suit a wide range of indoor or outdoor applications where standard headroom is available.

• Key Components: Include a main girder, end carriages, an electric hoist, trolley travel mechanism, and electrical systems. They are often paired with standard CD1 or MD1 type hoists.

• Advantages: Compact structure, robust rigidity, flexible operation, and high safety.

• Typical Applications: Widely used in machining workshops, equipment assembly lines, maintenance bays, and warehouse logistics.

Primary Specifications (Customizable):

• Capacity: 0.5 to 20 Tons

• Span: 7.5m to 31.5m

• Lifting Height: Up to 30m (Standard: 6m, 9m, 12m, 18m, 24m, 30m)

• Duty Class: A3 / A4

• Control: Floor Pendant / Radio Remote / Cabin

• Travel Speed: 20-30 m/min

2. Low Headroom Single-Girder Crane

Engineered specifically to maximize hook lift height in facilities with low ceiling clearance.

• Overview: By integrating a specially designed hoist and trolley, this crane minimizes the space between the hook and the beam, providing critical extra inches of lift.

• Key Feature: The hoist trolley wheels run directly on the bottom flange of the main girder (often a box-type design), unlike standard models.

• Ideal For: Workshops and older buildings where vertical space is constrained but maximum lift height is required.

Primary Specifications (Customizable):

• Capacity: 1 to 20 Tons

• Span: 7.5m to 31.5m

• Lifting Height: Up to 30m

• Duty Class: A3 / A4

• Control: Floor Pendant / Radio Remote

• Travel Speed: 20-30 m/min

3. Underslung Single-Girder Crane (Top-Running)

The optimal solution for column-free workshops where the roof structure is load-bearing.

• Overview: Also called under-running cranes, the entire runway system is suspended from the roof support steel, freeing up floor space.

• Key Advantages: Provides excellent side approach and a clean floor layout without columns. It offers a tight headroom design.

• Ideal For: New or existing buildings with strong roof structures, requiring wide area coverage.

Primary Specifications (Customizable):

• Capacity: 0.5 to 10 Tons (Standard), up to 32T with special design.

• Span: 3m to 16m

• Lifting Height: Up to 30m

• Duty Class: A3 / A4

• Control: Floor Pendant / Radio Remote

• Travel Speed: 20-30 m/min

4. FEM/DIN Standard Single-Girder Crane

Built to rigorous European FEM/DIN standards for demanding, high-cycle operations.

• Overview: Features a compact "3-in-1" drive unit (integrating a hard-geared brake motor and gearbox), allowing for minimal blind spots and maximum floor area utilization.

• Key Advantages: Smooth variable frequency speed control, quiet operation, and the sealed brake unit is maintenance-free for life, reducing long-term costs.

• Ideal For: Precision material handling, delicate assembly, and industries like automotive, aerospace, and manufacturing requiring high duty cycles (Class A5).

Primary Specifications (Customizable):

• Capacity: 1 to 20 Tons

• Span: 7.5m to 28.5m

• Lifting Height: Custom based on site

• Duty Class: A5

• Control: Pendant / Remote

• Travel Speed: 20-30 m/min

5. Offset Trolley Single-Girder Crane

Utilizes an angular trolley design to provide superior height utilization in specific building layouts.

• Overview: The offset trolley configuration allows the hoist to sit closer to the beam, ideal when runway support points are low but there is adequate clear space above them.

• Key Benefit: Effectively increases the usable lifting height under the existing structural constraints.

• Ideal For: Workshops where crane supports (columns or corbels) are positioned low, but the roof itself is higher.

Primary Specifications (Customizable):

• Capacity: 1 to 20 Tons

• Span: 7.5m to 28.5m

• Lifting Height: Up to 30m

• Duty Class: A3 / A4

• Control: Floor Pendant / Radio Remote

6. Manual Single-Girder Bridge Crane

A reliable, non-powered solution for locations without electricity or where simple, occasional lifts are needed.

• Overview: Available in top-running or underslung styles, operated via hand chain or by pushing the trolley and bridge.

• Key Advantages: Simple structure, easy transportation and installation, low cost, and perfect for hazardous or remote areas.

• Typical Applications: Equipment installation/maintenance in power plants (coal bunkers), water treatment facilities, wind turbine nacelles, and other utility projects.

Primary Specifications:

• Capacity: Up to 5 Tons

• Span: 4m to 12m

• Lifting Height: 3m to 10m

• Duty Class: A1

• Control: Manual / Hand-Push