Overhead crane, also known as bridge crane is one type of material handling equipment to meet the lifting requirements of medium and heavy industries. Generally, an overhead crane is a crane with a lifting hoist traveling along the crane bridge between parallel runways.
Overhead Crane Designs
Designs of varous types of overhead cranes are provideded FOR FREE. Main types of overhead cranes are as following:
Overhead Crane Specifications Offering of DQCRANES
Standard overhead cranes: Lifting capacity: 5 ton-550ton, Span：10.5m-31.5m, Lifting height：1m-30m, Working duty is medium (A5, A6). Also supply non-standard products according to your requirements.
Working Duty: A5 (Used in working not so frequency, such as general machining and assembly workshop). A6 (Used in much more frequency work, such as auxiliary hoisting in metallurgy and casting workshop). A7 (Used in busy working and the hoisting of melted hot metal).
Applications
Applied to materials handling between fixed span, and it's one of the most widely used crane with the largest number of varieties of different specifications.
Widely used in carrying, assemble and unassembled of general weights, and also can equipped with various special hoists for special operation.
Forbid to use in the conditions as easily combustible, explosive, corrosive (acid, alkali, plating, steam, etc.).
Conditions
Working ambient -25℃～+40℃, moisture ≤85%, altitude below 1000 meters, power supply 380V, 50Hz, 3phases (Adjustable according to customer's different requirement).
Types of Overhead Cranes Comparison
Single girder overhead crane v.s. Double girder overhead crane
Single girder crane vs. Double girder overhead crane
An overhead bridge crane can be configured in a single girder overhead crane or double girder overhead crane design. In simple terms, a bridge girder, or beam, is the support structure that allows the trolley and hoist to move from side-to-side along the bridge. The trolley is used to precisely position the hoist prior to raising or lowering a load.
To a degree, both single and double girder cranes are equal in strength and durability. Single girder bridge cranes distinct itself from double girder bridge configuration mainly in terms of hook height, which is height your electric hoist can lift above the ground.
Due to the placement of electric hoist, the double girder crane offers more hook height, which is installed on the top of double girders rather than hung under the single girder.
Single girder bridge crane
A single girder bridge crane is usually designed for the lifts under 20 tons, span less than 31.5m, or the requirement for crane services classification is under A7 and A8.
Single girder overhead crane - Overhead crane types of Dongqi
The overhead bridge consists of one girder beam supported on each side by an end truck. The electric trolley and hoist commonly run on the bottom flange of the bridge, often called single girder underhung overhead crane. The single girder underhung crane is less expensive because of the following reasons:
Only one beam girder is needed to move the trolley and hoist.
Lower cost in freight.
Easy installation.
Hoist and trolley design is easier than those of double girder overhead crane.
Double girder overhead crane
When the lifts is more than 20 ton or the span is more than 31.5m, or the crane duty cycle is A7 and A8, the double girder overhead crane will be the first choice.
Double girder overhead crane - Overhead crane types of Dongqi
Two girder beams makes up the bridge, supported by an end truck or carriage on each side, with the electric trolley and hoist running on the rails, installed on the top of both bridge girders.
Double girder cranes are recommended for heavier-duty applications, where lifts is more than 20 ton or the span is more than 31.5m, or the crane duty cycle is A7 and A8.
Double girder crane is selected when crane needs to be custom designed, in terms of walk ways, driver’s cabs, magnet cable reels, and others.
What more, double girder overhead crane offers more lifting height with the top running design.
Top running crane vs. Under running crane
What a top running crane or under running crane is should be understand when you want to know the clear differences between bridge cranes.
On a top running crane, the beam bridge runs on rails along the top of the runway beams.
On an under running crane, or underhung crane, the beam bridges are supported by the bottom of the runway beams and the crane wheels run along the bottom of the lower beam flange.
Top running crane
Top running crane is very flexible and versatile, which can be used to handle lifts with small and large capacity.
Top running crane - Type of overhead crane
With no limiting capacity, the top running crane can be used to handle lifts with small capacities to very large capacities. Top running cranes consist a rail installed on top of each runway, with wheels move on the rail, rather than on the bottom flange of the runway beam. Supported by the building structure or runway support columns, or sister columns, top running overhead crane are the first option for moving extremely heavy loads.
Under running crane / Underhung crane
Under running crane, also called under hung cranes, suspension cranes, are used for lighter service and lower capacity applications, usually supported by ceiling or roof structures.
Under running or under hung crane - Overhead crane type
Due to the crane wheels are supported by the bottom flange of the overhead crane runway beams, functioned as the crane rail, the under running crane is also called under hung cranes. This type of overhead cranes can maximize the utilization of the floor space of your facility, because under running cranes are supported by the ceiling trusses or the roof structure.
With the utilization of an existing support structure (if adequate), or run on a newly-engineered support structure, the under running cranes may lower the cost of crane.
Features of underhung cranes
Designed for lighter service / lower capacity applications
Maximize utilization of the building’s width and height when supported by roof or ceiling structures
Hook height is less than top running design because the bridge of overhead crane and electric hoist hang underneath runways
Workstation crane
Workstation cranes are designed for transferring with limited effort in a smaller size work area. Workstation cranes are lighter-duty systems for lifts from 0.25 ton up to 2 tons in capacity, in a repetitive way to lift and position loads, to improve working productivity and ease of work flow.
Workstation cranes can use modular design to build and install, offering high flexibility without requiring an existing supporting structure for installation.
Workstation crane - A type of overhead crane of Dongqi Crane
Which Type of Overhead Cranes is Right for Your Application?
Do you have a better understanding on what the best type of overhead crane for your application is. Maybe you will realize a workstation crane or monorail crane is needed for your specific lifting requirements instead of a full overhead crane installation. Maybe you need additional fabrication or engineering to have an overhead crane installed in the existing building structure. No matter what the situation is, you have to consider the following factors when selecting from the different types of overhead cranes:
Crane capacity and Hoist capacity
Span length
Hook Height
Crane duty class: Number of lifts per hour, Percent of lifts near or at capacity
Structural building conditions: Existing runways / support structure in place
Operating conditions
Other special considerations
Number of cranes required
All the overhead cranes can be customized according the required crane lifting capacity, working application, loading duty, and the other specific requirements. Contact us to get custom crane design today!
Overhead crane project design services from DQCRANES - your overhead crane manufacturer and crane services provider - lowers your overhead crane price. Please send your overhead crane inquiry and then decided which crane supplier to selection. Buy overhead crane from DQCRANES will be a desicion that you will never regret.
Overhead Crane for Various Industries
Overhead crane video
Overhead cranes, also known as bridge cranes or overhead bridge cranes, are versatile lifting machines used across a wide range of industries. They are designed to move heavy loads, often in large-scale environments like factories, warehouses, construction sites, and shipping ports. DQCRANES offers types of industrial overhead cranes for sale at good price. Below are some industries where overhead cranes are applied:
Manufacturing
Heavy Machinery Assembly: Overhead cranes are used in factories where heavy parts or assemblies are manufactured. For example, in automotive or aerospace industries, they lift and position large components.
Steel Mills & Foundries: In steel production and metal foundries, overhead cranes handle raw materials, steel billets, and molten metal, which are too dangerous to lift manually.
Construction
Material Handling: Overhead cranes are used in construction sites to lift heavy building materials like steel beams, concrete slabs, or large precast components.
Concrete Plants: Cranes in precast concrete plants help position molds, lifting finished products, or materials for production.
Shipping & Ports
Container Handling: In ports, overhead cranes (often gantry cranes) are used to load and unload shipping containers from large vessels.
Bulk Material Handling: They also move bulk materials like coal, grain, or aggregates in storage and transportation systems.
Warehousing & Distribution
Load Movement in Warehouses: Overhead cranes are used to store and retrieve goods in large warehouse environments, especially those dealing with heavy or oversized products.
Order Fulfillment: They are useful for picking large or heavy items that are not suited to standard forklifts or manual labor.
Automotive Industry
Assembly Lines: Overhead cranes are used for moving large automotive parts (e.g., engine blocks, car frames) along assembly lines.
Parts Handling: Cranes help position large car parts into assembly processes where human workers cannot manually lift them.
Mining
Heavy Equipment Maintenance: In mining operations, overhead cranes are used to repair or maintain large mining equipment and transport tools or parts.
Material Handling: Cranes are used to move mined materials, including rocks, ores, and other heavy loads from extraction sites to processing or storage.
Oil & Gas
Refineries and Petrochemical Plants: In refineries, overhead cranes are used for maintenance tasks, moving pipes, and large equipment for installation or repair.
Offshore Platforms: Cranes are crucial for lifting heavy equipment and materials on and off offshore oil platforms.
Energy Industry
Power Plants: Overhead cranes are used in power plants, particularly in lifting turbine blades, motors, and generators for installation, maintenance, and repair.
Renewable Energy: In wind turbine manufacturing, cranes are used to handle large parts like blades and nacelles during assembly.
Aerospace
Aircraft Assembly: Overhead cranes are used in aerospace factories to move aircraft parts such as wings, fuselages, and engines.
Maintenance and Overhaul: They are also used in hangars for maintenance and repair of aircraft.
Paper & Pulp Industry
Heavy Pulp Handling: In paper mills, overhead cranes are used to handle large rolls of paper, stacks of lumber, or large containers of pulp.
Production Line Support: Cranes facilitate the movement of raw materials through the various stages of paper production.
Food & Beverage
Ingredient Handling: Overhead cranes help move large quantities of raw materials, such as grains, sugar, or salt, in food processing plants.
Packaging and Bottling: In packaging lines, cranes can help move bottles, cans, and large containers to different stages of production.
Pharmaceuticals
Clean Room Operations: In pharmaceutical manufacturing, overhead cranes are used in clean rooms to move large containers of chemicals, powders, or finished products without contamination.
Railroads
Rail Car Maintenance: Overhead cranes are essential for lifting and maintaining railcars and handling large components like wheels, axles, and rail tracks.
Entertainment & Stage Productions
Lighting and Set Pieces: In theatres, overhead cranes are used to move heavy stage props, set pieces, and lights for performances or events.
Concerts and Events: For large concerts or outdoor events, overhead cranes help move and set up large stages or audio-visual equipment.
Overhead Crane Project Cases
Committed to be a dynamic and more influential force in the global lifting equipment market, DQCRANES has developed a supply chain which can delivery our cranes globally, and so far, we have served customers in about 85 countries, such as, South Africa, Malaysia, United Arab Emirates, Singapore, Canada, Saudi Arabia, Philippines, Pakistan, Australia, United States, Thailand, United Kingdom, Indonesia, Egypt, India, Brazil, Sweden, and Taiwan, etc.
Overhead crane project cases in different industries and countries are studied. Learn the overhead crane project case studies and contact us to get the ideal material handling solution for your application.
FAQs about Overhead Crane
DQCRANES offers a variety of overhead cranes designed to meet different industrial needs. The main types include:
Single Girder Overhead Cranes: Suitable for lighter load capacities and smaller workspaces.
Double Girder Overhead Cranes: Designed for heavy-duty operations with higher lifting capacities.
Top Running Overhead Cranes: These are mounted on rails at the top of the building structure, allowing for maximum clearance and space efficiency.
Underhung Overhead Cranes: These cranes are suspended from the ceiling, ideal for applications where building height is limited.
Explosion-Proof Cranes: Specially designed for use in hazardous environments with flammable or explosive materials.
DQCRANES offers cranes that can handle a wide range of load capacities, from 1 ton to 550 tons or more, depending on the model and design specifications. Custom solutions can be tailored for higher capacity needs.
Yes, DQCRANES provides highly customizable options. We can tailor the crane to fit your specific operational needs, including lifting capacities, span, lifting height, and speed. Additionally, features like remote controls, safety systems, and specialized hoists can be included as part of the custom package.
Overhead cranes from DQCRANES are used across a wide range of industries, including: Manufacturing, Construction, Shipping and, logistics, Mining, Oil and gas, Automotive production, Steel mills and metalworking, etc.
With proper maintenance and regular inspections, a DQCRANES overhead crane can last between 20 to 30 years or more. The lifespan varies based on the intensity of usage and the specific environment in which the crane operates.
Safety is a top priority for DQCRANES. Our cranes include a range of safety features, such as:
Overload protection: Prevents lifting beyond the crane's capacity.
Emergency stop button: Quickly halts crane operation in case of an emergency.
Anti-collision systems: For cranes working in tight spaces or multi-crane systems.
Limit switches: To prevent over-travel of the hoist or trolley.
Safety brakes: To hold loads securely in place if power is lost.
Yes, like all heavy machinery, overhead cranes require regular maintenance to ensure optimal performance and safety. DQCRANES provides maintenance services, including routine inspections, lubrication, and part replacements. We also offer training for in-house maintenance teams.
Absolutely! DQCRANES offers full support with the installation and commissioning of your crane. Our team ensures that the crane is properly installed, tested, and fully operational before handover. We can also provide on-site training for your operators to ensure safe and efficient use.
DQCRANES offers a standard 1-2 year warranty on most overhead crane components, covering defects in material or workmanship. Extended warranty options are available upon request, and we provide ongoing support after the warranty period.
Yes, DQCRANES designs its cranes with energy efficiency in mind. We use high-quality motors, energy-saving drives, and other technologies to reduce power consumption while maintaining optimal lifting performance.
The lead time for a custom crane can vary depending on the specifications and complexity of the project. Typically, it ranges from 6 to 12 weeks, but for urgent requirements, expedited production options can be discussed.
Yes, DQCRANES offers operator training as part of our after-sales service. Our training covers all aspects of crane operation, safety protocols, and basic maintenance to ensure that your team can operate the crane effectively and safely.
Yes, DQCRANES offers a wide range of spare parts for maintenance and repairs. We supply high-quality components like hoists, motors, brakes, and control systems, ensuring you can keep your crane in optimal working condition.
The cost of an overhead crane can vary widely depending on factors such as lifting capacity, crane type, customization options, and installation requirements. For a detailed and accurate quote, please contact DQCRANES directly with your project specifications.
To order an overhead crane, simply contact our sales team. We will discuss your requirements, help you select the best crane for your needs, and provide you with a free quote. We also offer assistance with site surveys and project planning.
