Editorial Technical Reference

Bridge Crane

This page explains how Bridge Crane is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

An overhead crane with a traveling bridge spanning parallel runways, used for lifting and moving heavy loads horizontally within a facility.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Bridge Crane

Definition
A bridge crane is a type of overhead material handling equipment characterized by a horizontal beam (bridge) that moves along elevated runways installed on building structures. The bridge supports a hoist and trolley mechanism that provides three-dimensional movement for precise load positioning. These cranes are engineered for heavy-duty industrial applications requiring efficient movement of materials across large work areas with minimal floor space occupation. The bridge structure distributes load weight to support columns or building structures, with the hoist mechanism utilizing wire ropes or chains wound around drums to raise and lower loads. Control systems enable precise positioning through pendant stations, radio remote controls, or cabin-operated interfaces. Typical specifications include a lifting capacity of 5–50 tons, span length of 10–30 meters, lifting height of 6–18 meters, and bridge travel speed of 20–80 m/min. Hoist lifting speed ranges from 2–12 m/min, trolley travel speed from 10–40 m/min, and duty class is typically A5–A7 per ISO 4301-1. Power supply is 380 volts (phases per IEC 60038), operating temperature range is -20 to 40°C, protection class is IP54–IP55 per IEC 60529, and control voltage is 24 V DC per IEC 60204-32. Max wheel load is 150–300 kN, and crane weight is 10–40 tons. Materials used include structural steel and alloy steel. These values are reference ranges; verify model-specific data with the manufacturer or supplier. The crane is designed for indoor use in machinery and equipment manufacturing facilities, but may be adapted for other environments with appropriate modifications. Regular inspection and maintenance are essential for safe operation.
Working Principle
Bridge cranes operate through an electromechanical system where electric motors drive the bridge along runway tracks while separate motors control the trolley movement across the bridge and the hoist's vertical lifting function. The bridge structure distributes load weight to support columns or building structures, with the hoist mechanism utilizing wire ropes or chains wound around drums to raise and lower loads. Control systems enable precise positioning through pendant stations, radio remote controls, or cabin-operated interfaces.
Common Materials
Structural Steel, Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Lifting CapacityRequired5–50 tonsMaximum safe working load the crane can handleISO 4301-1
Span LengthRequired10–30 metersDistance between runway rails or support columnsISO 4301-1
Lifting HeightRequired6–18 metersMaximum vertical travel distance of the hoist hook
Bridge Travel SpeedRequired20–80 m/minMaximum horizontal speed of bridge movement along runways
Hoist Lifting SpeedRequired2–12 m/minMaximum vertical speed of load lifting and lowering
Trolley Travel SpeedRequired10–40 m/minMaximum horizontal speed of trolley movement across bridge
Duty ClassRequiredA5–A7 FEM/ISOClassification based on operational intensity and load spectrumISO 4301-1
Power SupplyRequired380 volts/phasesElectrical supply requirements for crane operationIEC 60038
Operating Temperature-20–40 °COutside range requires special materials.
Protection ClassIP54–IP55Higher IP for dusty or wet environments.IEC 60529
Control Voltage24 V DCSafe extra-low voltage for control circuits.IEC 60204-32
Max Wheel Load150–300 kNImportant for runway design.
Crane Weight10–40 tDepends on capacity and span.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Bridge Girder
    Primary horizontal structural member that spans between runways and supports the trolley and hoist
    Material: Welded steel box section or I-beam construction
  • End Trucks
    Support structures at each end of the bridge containing wheels that travel along runway rails
    Material: Steel fabrication with machined components
  • Hoist Unit
    Lifting mechanism consisting of motor, gearbox, drum, and wire rope/chain for vertical load movement
    Material: Steel housing with alloy steel gears and high-strength wire rope
  • Trolley
    Mobile carriage that travels along the bridge girder, carrying the hoist for cross-bridge movement
    Material: Steel frame with wheel assemblies and drive components
  • Runway System
    Fixed track system installed on building structure that guides bridge movement
    Material: Steel rails mounted on support beams or building columns
  • Control System
    Electrical system for operating crane movements including pendant station, radio remote, or cabin controls
    Material: Electronic components in protective enclosures with control cables
  • Safety Devices
    Protective equipment including limit switches, overload protection, emergency stop, and warning systems
    Material: Various materials including steel, plastic, and electronic components
  • Operator Cabin
    Enclosed control station mounted on bridge for operator comfort and visibility
    Material: Steel frame with safety glass windows and interior panels

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bridge Crane.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical lifting system)
other spec: Max Load Capacity: 1-500 tons, Span: 5-50 meters, Lifting Height: 3-30 meters, Duty Cycle: A5-FEM (light to heavy)
temperature: -20°C to +40°C (standard), -40°C to +60°C (specialized)
Media Compatibility
✓ Steel beams and plates ✓ Machinery components ✓ Industrial containers/pallets
Unsuitable: Corrosive chemical environments without protective coatings
Sizing Data Required
  • Maximum load weight (tons)
  • Required span between runways (meters)
  • Lifting height and duty cycle requirements

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wire rope degradation
Cause: Fatigue from repeated bending over sheaves, corrosion from environmental exposure, and abrasive wear against drum grooves or other components
Wheel flange wear on bridge/trolley
Cause: Misalignment of runway rails, improper wheel-rail contact geometry, or excessive side loads during crane operation
Maintenance Indicators
  • Audible grinding or scraping noises during trolley or bridge movement
  • Visible excessive sway or vibration of the hoist load during lifting operations
Engineering Tips
  • Implement regular laser alignment checks for runway and bridge rails to ensure proper wheel-rail contact and reduce abnormal wear
  • Establish a preventive lubrication program specifically for wire rope using manufacturer-approved lubricants to reduce internal friction and prevent corrosion

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 12488-1: Cranes - Tolerances for wheels and travel and traversing tracks ANSI/ASME B30.2: Overhead and Gantry Cranes DIN 15018: Cranes; principles for steel structures, analysis and design

Quoted from the published standard.

Manufacturing Precision
  • Wheel alignment: +/-0.5mm per meter of span
  • Rail flatness: 0.2mm over 1m length
Quality Inspection
  • Load test to 125% rated capacity
  • Non-destructive testing (NDT) of welds using ultrasonic testing

Manufacturers of Bridge Crane

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Dafang Crane
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Henan Seven Industry
Henan, CN
Also makes: Overhead Crane, Gantry Crane, Portal Crane and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Henan Yuantai Crane Machinery Import&Export Co., Ltd.
Henan, CN
Also makes: Jib Crane, Overhead Crane, Gantry Crane and 4 more
Listed on the company's own website · profile compiled by CNFX from public sources
Kinocranes
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
KSCRANE
Henan, CN
Also makes: Jib Crane, Tower Crane, Overhead Crane and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the typical lifting capacity range for a bridge crane?

According to the directory reference, the lifting capacity typically ranges from 5 to 50 tons. However, this is a general range; the exact capacity for a specific model must be confirmed with the manufacturer or supplier.

What standards apply to bridge crane duty classification?

The duty class is typically classified as A5 to A7 according to ISO 4301-1. This standard defines the classification based on operational intensity and load spectrum. Always verify the duty class for your intended application with the manufacturer.

What are the common power supply requirements for bridge cranes?

The directory lists a power supply of 380 volts, with phases per IEC 60038. However, actual power requirements may vary depending on the installation location and local electrical codes. Confirm with the supplier.

What is the operating temperature range for a standard bridge crane?

The standard operating temperature range is -20°C to 40°C. If your environment falls outside this range, special materials or modifications may be required. Consult the manufacturer for guidance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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