Light Duty Overhead Crane

Light duty overhead crane is used for efficient material handling in workshops and warehouses where space constraints and structural load limitations must be considered. Designed for lifting capacities ranging from 5 to 20 tons, these systems improve lifting efficiency in light to medium industrial applications while reducing wheel loads on existing building structures.

Light Duty Overhead Crane Types – Single Girder and Double Girder Configurations

Single Girder Light Duty Overhead Crane

Single girder lightweight overhead cranes are commonly used in workshops and warehouses where efficient lifting, lower structural load, and simplified installation are important considerations. Compared with double girder systems, single girder crane configurations generally provide a more compact and economical solution for moderate-duty industrial lifting applications.

AQ-HD – Lightweight Compact Design for Space-Efficient Workshops

AQ-HD crane adopts a compact structural design commonly used in light duty workshop applications where reduced crane self-weight, smooth travel performance, and efficient space utilization are required.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 7.5-28.5m
  • Lifting height: 6-18m
  • Lifting speed: 0.8/5m/min
  • Hoist running speed: 2-20m/min
  • Crane running speed: 3-30m/min
  • Work duty: A5

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AQ-LD – Light Duty Configuration for General Industrial Applications

The AQ-LD is a widely used general-purpose configuration for everyday workshop lifting operations, suitable for standard manufacturing environments with moderate lifting frequency and conventional building layouts.

Technical Parameters

  • Load capacity: 5-25t
  • Span: 7.5-31.5m
  • Lifting height: 6-30m
  • Lifting speed: 0.3-8m/min
  • Hoist running speed: 20m/min
  • Crane running speed: 20m/min
  • Work duty: A3, A4

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AQ-LX – Lightweight Underhung Design for Low-Headroom Buildings

AQ-LX is used in light duty applications where available headroom is limited, and the crane runway is suspended from the building structure to maximize lifting height and working space.

Technical Parameters

  • Load capacity: 5-10t
  • Span: 3-22.5m
  • Lifting height: 6-30m
  • Lifting speed: 0.7-8m/min
  • Hoist running speed: 20m/min
  • Crane running speed: 20m/min
  • Work duty: A3, A4

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AQ-LB – Light Duty Explosion Proof Design for Hazardous Environments

AQ-LB is designed for light duty workshop environments involving flammable gases, dust, or hazardous materials, requiring explosion-proof electrical and mechanical systems for safe operation.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 7.5-31.5m
  • Lifting height: 6-30m
  • Lifting speed: 0.33-8m/min
  • Hoist running speed: 20m/min
  • Crane running speed: 20m/min
  • Explosion-proof grade: Exd IIB T4 or Ex d IIC T4

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Double Girder Light Duty Overhead Crane

Light duty double girder overhead crane systems are generally selected when lifting stability, longer spans, or higher structural rigidity requirements become more important than minimizing crane self-weight. They are commonly applied in facilities where production complexity and load handling precision require enhanced structural performance.

AQ-QDX – Lightweight Double Girder Design for Stable Workshop Operations

AQ-QDX features a European integrated structural design with optimized self-weight and enhanced rigidity, making it suitable for modern workshop installations where compact layout and stable lifting performance are required.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 10.5-31.5m
  • Lifting height: 6-24m
  • Lifting speed: 0.2-10.7m/min
  • Trolley running speed: 2.4-33m/min
  • Crane running speed: 4.2-68m/min
  • Work duty: A3-A5

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AQ-QD – Traditional Double Girder Design for General Light Industrial Applications

AAQ-QD crane adopts a conventional structural design widely used in established workshop environments, where robust structural strength and broad industrial adaptability are preferred.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 10.5-31.5m
  • Lifting height: 6-24m
  • Lifting speed: 2.1-11.5m/min
  • Trolley running speed: 27-40m/min
  • Crane running speed: 42-75m/min
  • Work duty: A3-A5

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AQ-NLH – European Hoist Double Girder Design for Compact Installation Requirements

AQ-NLH is a hoist-based double girder system with a European compact configuration, designed for workshops where installation space efficiency and hook height utilization are important structural considerations.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 10.5-31.5m
  • Lifting height: 6-18m
  • Lifting speed: 0.4-5m/min
  • Trolley running speed: 2-20m/min
  • Crane running speed: 3-30m/min
  • Work duty: A5

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AQ-LH – Traditional Hoist Double Girder Design for General Workshop Use

AQ-LH uses a conventional hoist-based double girder structure suitable for general workshop environments where stable operation and flexible adaptation to existing building layouts are required.

Technical Parameters

  • Load capacity: 5-20t
  • Span: 10.5-31.5m
  • Lifting height: 6-30m
  • Lifting speed: 0.18-8m/min
  • Trolley running speed: 20m/min
  • Crane running speed: 20m/min
  • Work duty: A3, A4

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Light Duty Crane Selection Guide: Choosing Based on Structural, Space, and Operational Constraints

Selecting a light duty bridge crane goes beyond choosing a capacity. In real engineering projects, the final configuration is always determined by the most critical limiting factor in your workshop. Use the guide below to identify which constraint takes priority in your facility.

Structural Limitation – When Building Strength is the Controlling Factor

The Condition:

Your workshop has light steel structures, aging columns, or limited runway beam capacity, where allowable wheel load is the primary engineering constraint. In some cases, span and duty cycle may also be moderate, but structural safety remains the dominant factor.

The Selection:

Prioritize AQ-LD or AQ-HD lightweight bridge crane configurations, with optimized self-weight reduction and controlled wheel load distribution.

In cases where operation frequency is higher, AQ-HD is generally preferred due to improved rigidity and smoother travel performance.

Vertical Space Limitation – When Headroom is the Key Constraint

The Condition:

Ceiling height is restricted by roof trusses, HVAC ducts, lighting systems, or existing structural beams. In many projects, both lifting height and hook approach distance are affected simultaneously, making vertical efficiency the key limitation.

The Selection:

Prioritize AQ-LX underhung crane systems, or AQ-LD configurations with low-headroom hoists.

Underhung systems are preferred when building structure allows suspension from roof trusses; otherwise, low-headroom hoists are used to recover part of the lost lifting stroke.

High-Frequency Workstation Operations – When Process Efficiency is Critical

The Condition:

Operations involve repetitive lifting of small to medium loads within defined work zones. In practice, this often combines frequent start-stop cycles, short travel distances, and precision positioning requirements.

The Selection:

Prioritize optimized configurations within the AQ-LD / AQ-HD range, with emphasis on smooth acceleration control and stable load positioning.

AQ-HD is typically preferred when higher structural stiffness is required for repeated cycling, while AQ-LD is more suitable for general-frequency operations.

Long Span & Stability Requirements – When Structural Rigidity is Required

The Condition:

The workshop covers wide spans where deflection control, load swing reduction, and travel stability become critical. In many cases, load capacity is light, but span-to-weight ratio creates structural challenges.

The Selection:

Prioritize AQ-QDX or AQ-QD double girder configurations, depending on whether compact European optimization or conventional structural robustness is preferred.

AQ-QDX is typically selected when space efficiency and reduced deadweight are important, while AQ-QD is used when maximum structural adaptability is required.

Hook Height Efficiency – When Vertical Lifting Stroke is Critical

The Condition:

The operation requires maximizing usable lifting height within a fixed building envelope. This is often combined with tall equipment clearance requirements or storage density constraints.

The Selection:

Prioritize AQ-NLH or AQ-LH double girder hoist-based systems.

AQ-NLH is preferred for compact European-style optimization with better hook utilization efficiency, while AQ-LH is suitable for general hoist-based configurations in conventional workshops.

Environmental & Safety Constraints – When Operating Conditions Define the System

The Condition:

The working environment includes hazardous gases, combustible dust, corrosive atmospheres, high humidity, high-temperature exposure, or regulatory safety requirements. In many industrial facilities, multiple environmental risks may exist simultaneously, requiring both electrical protection and structural durability considerations.

The Selection:

Prioritize AQ-LB explosion-proof crane systems for environments involving flammable gases or dust, ensuring certified electrical safety compliance.

In corrosive or high-humidity environments, additional protective coatings and sealed electrical components are recommended to enhance long-term durability and operational reliability.

If you have workshop drawings, structural data, or lifting requirements, our engineering team can help evaluate your conditions and recommend the most suitable light duty overhead crane solution. Please also see the case studies below to understand how these lightweight overhead crane systems are applied in real projects.

Project Cases – Light Duty Overhead Crane Solutions in Real Applications

Shipyard Maintenance Workshop, Mexico

Selected Solution: AQ-HD Single Girder Overhead Crane (15 Ton, 27.14m Span, 7.5m Lift Height, A5 Duty)

This workshop was used for ship repair and surface painting operations, where steel hull sections and auxiliary equipment needed to be frequently lifted and positioned.

During site evaluation, the key constraints were:

  • Moderate span requirement
  • Frequent lifting during maintenance cycles
  • Requirement for stable load positioning during painting operations

Based on these conditions, an AQ-HD single girder 15 ton overhead crane configuration was selected instead of a heavier double girder system, mainly to control structural load on the existing steel building while maintaining sufficient rigidity for A5-duty operation.

The crane was configured with controlled travel speed to reduce load swing during positioning of ship sections inside the painting zone.

Large-Span Manufacturing Workshop, Uzbekistan

Selected Solution: AQ-LX Underhung Overhead Crane (56 m Span, 12 m Lift Height, A3 Duty, 6-Point Suspension)

This project involved a large-span fabrication workshop with a lightweight roof structure, originally not designed for heavy crane runway loads.

Key site conditions included:

  • Extremely wide span (56m)
  • Limited roof load-bearing capacity
  • Requirement to keep full floor space clear for fabrication activities
  • Medium-duty lifting of steel components

A traditional top-running crane would have required heavy runway beams and structural reinforcement. To avoid building modification, we selected an AQ-LX underhung system with six suspension points, distributing load directly into the roof truss system.

This allowed the client to maintain full floor accessibility while still achieving stable lifting across the entire span.

Steel Warehouse Operation, Kazakhstan

Selected Solution: AQ-QDX Double Girder Overhead Crane (10 Ton, A5 Duty)

This facility was used for steel beam and coil handling during storage and truck loading operations.

The main operational requirements were:

  • Frequent loading/unloading cycles
  • Need for stable movement of long steel beams
  • Requirement to reduce swing during truck alignment

Instead of a standard single girder system, an AQ-QDX double girder configuration was selected to improve structural rigidity and reduce load deflection during travel.

The client specifically required smoother positioning during truck loading, so the crane was equipped with VFD control to reduce sudden acceleration and minimize sway during steel coil handling.

Industrial Manufacturing Plant, Dominican Republic

Selected Solution: AQ-LD Single Girder Overhead Crane (7.5 Ton, 12.6 m Span, 4 m Lift Height, A3 Duty)

This was a standard industrial workshop for insulation panel and metal sheet handling.

Key working conditions:

  • Limited lifting height requirement (4m hook height)
  • Moderate lifting frequency (A3 duty cycle)
  • Standard workshop steel structure
  • Cost-sensitive project with routine daily lifting tasks

An AQ-LD single girder crane with chain hoist system was selected to match the duty level and structural conditions. The configuration provided sufficient lifting performance without overengineering the system, which helped reduce both installation cost and building load requirements.

Structural Design & Manufacturing Configuration of Light Duty Overhead Cranes

Light duty overhead cranes are engineered through a combination of precision structural fabrication, standardized mechanical assemblies, and industrial-grade electrical systems. The overall configuration is optimized for stable performance, lightweight structure, and long service life in light-duty workshop operation environments.

Main Girder Structural Design

The main girder is fabricated using high-strength Q235B steel plates with controlled welding accuracy and strict dimensional tolerances.

  • Full-length automatic submerged arc welding ensures uniform weld quality
  • Post-weld stress relief treatment reduces internal deformation
  • Pre-designed camber compensates for deflection under rated load

This structure provides high rigidity while maintaining a lightweight design to reduce wheel load impact.

End Carriage & Traveling Wheel System

The end carriage adopts a compact integrated structure designed for stable travel and long-term rail performance.

  • Forged steel or ductile iron wheels with heat-treated tread surfaces
  • Precision-machined wheel sets for smooth rail contact
  • Integrated motor-gearbox drive unit for compact transmission
  • Optimized wheelbase design for uniform load distribution

This configuration reduces rail wear and improves long-term travel stability.

Hoisting System Configuration

The hoisting system adopts standardized electric hoists designed for light to medium-duty lifting tasks in industrial workshops.

  • Electric wire rope hoist with compact structural design
  • High-efficiency lifting motor with thermal protection
  • Dual braking system for secure load holding
  • Optional low-headroom hoist for restricted-height workshops

The system is optimized for stable and efficient lifting in the 5-20 ton working range.

Electrical Control System

The electrical system is designed to ensure smooth operation, precise control, and enhanced safety during repetitive lifting cycles.

  • Variable Frequency Drive (VFD) for smooth acceleration and deceleration
  • Overload protection and emergency stop functions safeguard equipment and operators
  • Limit switches for hoisting and traveling end positions
  • Industrial IP-rated electrical cabinet ensures reliable performance in dusty and humid environments

This improves operational precision while reducing mechanical impact.

Integrated Safety Protection System

Multiple safety mechanisms are integrated to ensure reliable performance under continuous industrial operation.

  • Upper and lower hook limit switches prevent over-hoisting and mechanical collision
  • Load limiter continuously monitors lifting capacity and prevents overload operation
  • End carriage buffers absorb impact and protect structural components during travel
  • Phase failure and voltage protection safeguard the electrical system from abnormal power conditions

These systems ensure safe and stable operation under frequent start-stop conditions.

Installation & Maintenance-Oriented Design

The crane structure is designed to simplify transportation, installation, and long-term maintenance.

  • Modular main girder and end carriage structure for easy shipment
  • Bolt-connected interfaces for fast on-site assembly
  • Standardized electrical wiring layout for easier troubleshooting
  • Accessible maintenance points for hoisting, driving, and electrical components

This reduces installation time and improves long-term service efficiency in industrial workshops.

Light Duty Overhead Crane Pricing

Light duty overhead crane systems are designed with flexible configurations and modular components, which means the final price varies depending on technical specifications, structural design, and application requirements. This section provides a general price reference for common models and explains the key factors that influence overall cost.

Price Range Overview

ModelLoad CapacitySpan RangePrice Range (USD)
AQ-LD5-20 Ton7.5-31.5m$3,900 - $15,400+
AQ-HD5-20 Ton7.5-31.5m$7,600 - $30,800+
AQ-LX5-10 Ton7.5-22.5m$3,500 - $11,200+

The above prices are for reference only and may vary depending on project conditions and technical requirements.

Key Factors Affecting Light Duty Overhead Crane Price

The final cost of a light duty bridge crane is determined by multiple technical and operational factors, including:

Load capacity and working duty class

Higher lifting capacity and more frequent working cycles require stronger structural design and upgraded components.

Span and lifting height

Larger span and higher lifting height increase steel consumption and structural reinforcement requirements.

Main girder configuration

Single girder and reinforced girder designs differ significantly in material usage and fabrication complexity.

Hoisting system selection

Different electric hoist brands, lifting speeds, and low-headroom designs directly affect pricing.

Electrical control system

VFD control systems, automation level, and protection configurations influence overall cost.

Installation and customization requirements

Special workshop conditions, non-standard dimensions, and installation complexity may also affect final pricing.

Since every workshop and project has different operational requirements, the most accurate light duty bridge crane pricing can only be provided after evaluating your specific technical conditions.

For a detailed and project-specific quotation, please contact our engineering team. We will help you select the most suitable light duty overhead crane solution based on your capacity, span, and application requirements.

Installation and After-Sales Support for Light Duty Overhead Cranes

Aicrane provides comprehensive installation guidance and after-sales support for light duty overhead bridge cranes to ensure safe commissioning, stable operation, and long-term reliability in industrial applications such as manufacturing, warehousing, and logistics facilities.

Installation Support

  • On-site installation guidance provided by experienced engineers to assist with crane assembly, alignment, and system commissioning
  • Remote installation support through video communication and technical documentation for step-by-step guidance during installation
  • Technical assistance for electrical wiring, system integration, and operational testing

After-Sales Service System

  • Fast supply of spare parts to minimize equipment downtime
  • 24/7 technical support for operational troubleshooting and maintenance assistance
  • Standard warranty coverage with long-term technical support availability
  • Maintenance guidance and operational consulting when required

Light duty overhead cranes are engineered for efficient and reliable material handling in light to medium-duty industrial applications. For technical selection or project consultation, AICRANE engineering team is available to support your requirements.

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