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.

Note:

• Lifting Capacity: 5ton, 10ton, 16/3.2ton, 20/5ton, 32/5ton, 50/10ton, 75/20ton, 100/20ton, 125/32ton, 150/30ton, 160/32ton, 200/50ton, 250/50ton, 300/75ton, 350/80ton, 400/80ton, 450/100ton, 500/100ton, 550/100 ton.
• Span: 10.5M, 13.5M, 16.5M, 19.5M, 22.5M, 25.5M, 28.5M, 31.5M.
• Working Duty: A5 (Used in working not so frequently, such as general machining and assembly workshop). A6 (Used in much more frequent work, such as auxiliary hoisting in metallurgy and casting workshops). A7 (Used in busy working and the hoisting of molten hot metal).

Applications

• Applied to materials handling between fixed spans, it's one of the most widely used cranes with the largest number of varieties of different specifications.
• Widely used in carrying, assembling, and disassembling of general weights, and can be equipped with various special hoists for special operations.
• Forbid the use in 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

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 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.

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.

• 
  Double girder overhead crane installation in Bangladesh
• 
  5 ton single girder overhead crane installation in shipyard Maldives
• 
  50/20 ton ladle crane and 15 ton crane installation & commissioning in Algeria
• 
  5 ton Gantry crane installations for the Saudi Electricity Company
• 

  32 ton double girder gantry crane installation

• 
  Overhead crane load testing in coil plant 

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.