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An overhead bridge crane is a heavy-duty material handling equipment designed to lift, mossa, and position large or heavy loads horizontally across a fixed span. Suspended from or mounted on elevated runways (typically along the length of a facility), it consists of a bridge structure that travels along these runways, with a hoist or trolley system that moves perpendicular to the bridge—enabling precise, multi-directional load movement.

Widely used in industrial settings, overhead bridge cranes streamline operations, ridurre il lavoro manuale, and enhance safety when handling weights from a few tons to hundreds of tons. They are customizable to fit specific workspace dimensions, requisiti di carico, e condizioni ambientali, making them indispensable in manufacturing, logistica, and heavy industries.

Key Features of Overhead Bridge Cranes

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Overhead bridge cranes are engineered for reliability, efficienza, e sicurezza. Here are their core features:

1. Elevata capacità di carico: Designed to handle loads ranging from 1 ton to over 500 tonnellate, suitable for light to ultra-heavy lifting tasks.
2. Controllo preciso: Equipped with advanced hoist and trolley systems (manuale, elettrico, o idraulico) per liscio, accurate load positioning—critical for delicate operations like machinery assembly.
3. Costruzione durevole: Built with high-strength steel girders, reinforced runways, and corrosion-resistant components to withstand harsh environments (PER ESEMPIO., high temperatures, polvere, or humidity).
4. Conformità alla sicurezza: Le caratteristiche di sicurezza integrate includono la protezione da sovraccarico, pulsanti di arresto di emergenza, finecorsa, and anti-collision systems, meeting global standards (OSHA, Iso, Fem).
5. Efficienza spaziale: Operates above ground level, freeing up floor space for other equipment or workflows—ideal for facilities with limited ground area.
6. Customizability: Available in single or double girder designs, con opzioni per la lunghezza della campata, altezza di sollevamento, power sources (elettrico, diesel), and automation (for unmanned operations).

Single Girder vs. Double Girder Overhead Bridge Cranes: Qual è la differenza??

Single girder overhead bridge crane

Double girder overhead bridge crane

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Choosing between single girder and double girder overhead bridge cranes depends on your load requirements, workspace, e bilancio. Here’s a breakdown:

Caratteristica	Single Girder Overhead Bridge Crane	Double Girder Overhead Bridge Crane
Structure	One main girder (beam) supporting the hoist/trolley.	Two parallel girders with the hoist/trolley running between them.
Capacità di carico	Fino a 20 tonnellate (standard); 50 tonnellate (heavy-duty models).	20 tonnellate e oltre (commonly 50–500+ tons).
Lunghezza	Ideal for spans up to 30 metri.	Suitable for longer spans (fino a 50+ metri).
Altezza di sollevamento	Moderate (limited by single girder strength).	Higher lifting heights (extra clearance due to dual girders).
Costo	More affordable (simpler design, lower material use).	Costo iniziale più elevato (sturdier build, larger components).
Ideale per	Light to medium loads; small to medium facilities (PER ESEMPIO., officine, magazzini).	Heavy loads, large spans, or harsh environments (PER ESEMPIO., acciaierie, cantieri navali).

Technical Specifications of Overhead Bridge Cranes

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Below is a general parameter table for common overhead bridge crane models. Custom specifications are available based on your needs:

Tipo di modello	Max Lifting Capacity	Lunghezza	Altezza di sollevamento	Classe operaia (ISO/FEM)*	Alimentazione elettrica	Hoist Speed
Trave singola (Standard)	1–20 tonnellate	5–30 m	3–12 m	A3–A5	380V/3 Fasi/50 Hz (costume)	0.5–10 m/min
Trave singola (Per impieghi gravosi)	20–50 tons	10–25 m	5–15 m	A5–A6	380V/3 Fasi/50 Hz (costume)	0.3–8 m/me
Double Girder (Standard)	20–100 tonnellate	10–40 m	6–20 m	A6–A7	380V/3 Fasi/50 Hz (costume)	0.2–6 m/min
Double Girder (Ultra-Heavy)	100–500+ tonnellate	15–50+ m	8–30 m	A7–A8	Costume (diesel/electric)	0.1–4 m/min

Classe operaia: Indicates duty cycle (how often the crane operates under load). Higher classes (A7–A8) suit continuous, heavy-use environments.

Industries That Use Overhead Bridge Cranes

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Overhead bridge cranes are versatile across sectors requiring heavy material handling. Key applications include:

1. Produzione: Moving raw materials (acciaio, aluminum) and finished products on assembly lines (automobilistico, aerospaziale, macchinari).
2. Magazzino & Logistica: Loading/unloading cargo, impilare pallet, and organizing inventory in distribution centers.
3. Metallurgia: Handling molten metal, lingotti, and rolled steel in foundries and steel mills.
4. Costruzione: Lifting building materials (travi in acciaio, pannelli di cemento) in prefabrication yards or on-site.
5. Estrazione mineraria: Transporting ore, attrezzatura, and components in mines or processing plants.
6. Costruzione navale: Assembling large ship parts and moving heavy machinery in dry docks.
7. Gestione dei rifiuti: Handling bulk waste or recycling materials in treatment facilities.

Overhead Bridge Crane Manufacturing Process

overhead bridge crane manufacturing process

How to Choose the Right Overhead Bridge Crane?

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Follow these steps to select the perfect overhead bridge crane for your needs:

1. Determinare i requisiti di carico: Calculate the maximum weight you’ll lift (include margins for future needs) to choose between single (≤20 tons) or double (≥20 tons) girder models.
2. Measure Your Workspace: Check the span (distance between runways) and available headroom (altezza di sollevamento) to ensure the crane fits.
3. Assess Working Conditions: Consider environmental factors—high temperatures, polvere, or corrosive substances may require specialized coatings or components.
4. Evaluate Duty Cycle: Choose a working class (A3–A8) based on how often the crane will operate (PER ESEMPIO., A7 for 24/7 heavy use).
5. Set a Budget: Single girder overhead cranes are more cost-effective for light tasks; double girder cranes are a long-term investment for heavy loads.
6. Prioritize Safety & Conformità: Ensure the crane meets local regulations (PER ESEMPIO., OSHA negli Stati Uniti, CE nell'UE) and includes essential safety features.

Domande frequenti: Gru a ponte sopraelevata

Q1: How often should an overhead bridge crane be inspected?

UN: Daily visual checks (for wear, leaks, or loose parts) and annual professional inspections are mandatory. Heavy-use cranes (A7–A8) may require quarterly inspections.

Q2: Can overhead bridge cranes be automated?

UN: SÌ. Modern models can integrate with IoT systems for automated load tracking, scheduled movements, and remote operation—ideal for repetitive tasks.

Q3: What’s the lifespan of an overhead bridge crane?

UN: With proper maintenance, single girder cranes last 15–20 years; double girder cranes can operate for 25–30 years or longer.

Q4: How is an overhead bridge crane installed?

UN: Installation involves mounting runways to building columns or support structures, positioning the bridge, and integrating the hoist/trolley. Professional installation is recommended for safety.

Q5: What’s the difference between an overhead bridge crane and a gantry crane?

UN: Overhead bridge cranes run on elevated runways (attached to a building), while gru a cavalletto have ground-supported legs—making gantries better for outdoor or open spaces.

Ready to enhance your material handling efficiency? Contact us for a custom overhead bridge crane solution tailored to your industry and workflow.

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