50/25 Ton Double Girder Overhead Crane

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The 50/25 Ton Double Girder Overhead Crane is a heavy-duty industrial electric overhead traveling (EOT) crane engineered for high-capacity, dual-load lifting operations. Designed with a main lifting capacity of 50 tons and an auxiliary lifting capacity of 25 tons, this double girder crane perfectly balances heavy-load handling and flexible light-duty operation. It adopts a robust box-type double girder structure, compliant with international industrial crane standards, and features stable operation, high working efficiency, wide adaptability, and long service life. This crane is widely applied in heavy manufacturing workshops, steel mills, machinery processing plants, warehouses, and industrial yards for material handling, equipment installation, and heavy cargo transfer tasks.

Classified as A5-A6 working duty, the equipment is suitable for continuous, high-frequency industrial operation, capable of tackling both long-term heavy-load lifting and precise small-tonnage handling, effectively meeting diverse production and logistics demands of modern industrial enterprises.

Core Structural Design

1. Optimized Double Girder Structure

The crane adopts a high-rigidity double box girder welded structure, processed via integral welding, stress relief annealing, and precision machining technologies. This structural design uniformly disperses heavy load pressure, effectively avoiding structural deformation and shaking during high-capacity lifting. Compared with single girder cranes, the double girder configuration greatly improves overall stability, load-bearing performance, and operational safety, supporting larger spanning distances and higher lifting heights. The streamlined girder design also reduces wind resistance and self-weight energy consumption, realizing lightweight and high-strength structural integration.

2. Dual Lifting Mechanism

Equipped with independent main and auxiliary hoisting systems, the 50-ton main hoist undertakes heavy-duty cargo lifting, while the 25-ton auxiliary hoist is responsible for auxiliary lifting, fine positioning, and light-load rapid handling. The dual-hoist collaborative design solves the problem of single-functional limitation of traditional cranes, enabling switching between heavy-load stable operation and light-load efficient operation freely. The two lifting systems operate independently without mutual interference, which greatly improves the flexibility and comprehensiveness of on-site lifting work.

3. Reliable Traveling System

The crane’s end carriage and traveling mechanism adopt high-precision assembly and thickened anti-wear traveling wheels, matched with frequency conversion driving motors. The traveling operation is smooth, with no impact or deviation, and the wheel-track fit is precise to reduce track wear and operational noise. The whole traveling system features strong bearing capacity, low failure rate, and long service life, adapting to long-distance and frequent reciprocating operation in large-span workshops.

50/25 ton double girder overhead crane

Key Product Features & Advantages

◆ Dual-Capacity Flexible Operation: 50-ton main hook and 25-ton auxiliary hook dual configuration, covering heavy-load hoisting, precise debugging, and rapid light-load handling, maximizing equipment utilization and meeting multi-scenario operational needs.
◆ Durable & Low Maintenance: All core components adopt high-quality industrial-grade materials and international brand accessories (Siemens, Schneider, etc.). The structural parts undergo anti-corrosion and wear-resistant treatment, with a service life of up to 30-50 years, and daily maintenance is simple and cost-effective.
◆ Diversified Control Modes: Supports three control modes: cabin control, ground wired handle control, and wireless remote control. Operators can choose the operation mode according to on-site working conditions, improving operational convenience and construction efficiency.
◆ Strong Environmental Adaptability: Customizable explosion-proof, high-temperature resistant, and dust-proof configurations are available, adapting to harsh working environments such as steel mills, chemical plants, and outdoor open yards.

50/25 ton double girder overhead crane

Complete Safety Protection System

This 50/25 ton double girder overhead crane is equipped with a comprehensive safety protection system to eliminate operational risks in all aspects, complying with global industrial safety specifications:

◆ Overload lifting protection: Automatically cut off power and alarm when the load exceeds the rated capacity to prevent overload operation damage and safety accidents.
◆ Travel limit & height limit protection: Installed with upper and lower hoisting limit switches and traveling limit devices to avoid over-hoisting and over-traveling collisions.
◆ Emergency stop device: Equipped with emergency stop buttons in both cabin and remote control modes for immediate power cut and stop in case of abnormal conditions.
◆ Phase sequence and over-current protection: Prevent motor burnout and circuit failure caused by phase loss, reverse phase, and over-current.
◆ Anti-collision & buffer device: Installed with high-performance buffer devices at both ends of the crane track to reduce impact and avoid equipment collision damage.
◆ Wind-proof and anti-slip device (outdoor type): Equipped with wind-proof clamps and rail brakes to ensure stable parking in strong wind environments.

50/25 Ton Double Girder Overhead Crane Technical Parameters

Parameter Item	Technical Specification
Main Lifting Capacity	50 Ton
Auxiliary Lifting Capacity	25 Ton
Working Duty	A5-A6
Customizable Span	10.5m – 31.5m
Customizable Lifting Height	6m – 30m
Main Hoisting Speed	0.8 – 3.2 m/min
Auxiliary Hoisting Speed	1.5 – 6.3 m/min
Crane Traveling Speed	10 – 31.5 m/min
Trolley Traveling Speed	5 – 20 m/min
Control Mode	Cabin / Wired Handle / Wireless Remote Control
Certification	CE, ISO, SGS
Service Life	30-50 Years

Application Scenarios

The 50/25 Ton Double Girder Overhead Crane is a versatile heavy-duty lifting equipment, widely used in various industrial fields with high load and high-precision operation requirements:

◆ Heavy machinery manufacturing workshops: For hoisting and assembly of large mechanical equipment, machine tools, and structural parts.
◆ Steel and metallurgy industry: For handling steel coils, steel plates, and heavy metallurgical accessories.
◆ Hydropower and engineering construction: For installation and maintenance of large engineering equipment.
◆ Large logistics warehouses and freight yards: For centralized stacking and transfer of heavy goods.
◆ Chemical, mining, and new energy industries: Custom explosion-proof and anti-corrosion models adapt to special harsh working conditions.

After-Sales & Customization Service

We provide one-stop customized services for the 50/25 ton double girder overhead crane, including personalized customization of span, lifting height, working speed, protection grade, and control modes according to customers’ on-site working conditions. All products are strictly manufactured in accordance with international standards, with rigorous factory testing to ensure stable and reliable product quality.

We offer 1-year full machine warranty, lifelong technical support, and spare parts supply services. Professional after-sales teams provide fast door-to-door installation, commissioning, maintenance, and fault repair services to ensure long-term stable and efficient operation of customer equipment.