Double girder overhead crane can deal with heavy duty safely and stably. Double girder bridge crane has large loading capacity, such as 30 ton crane, 40 ton bridge crane, 60 ton overhead crane, 70 ton traveling crane, 100 ton construction crane. This makes it high efficiency.
- Load capacity: 5-450t
- Span: 10.5-31.5m
- Lifting height: 6-24m
- Lifting speed: 2.1-11.5m/min
- Trolley running speed: 27-40m/min
- Crane running speed: 42-75m/min
- Work duty: A3-A7
- Load capacity: 5-20t
- Span: 10.5-31.5m
- Lifting height: 6-26m
- Lifting speed: 30.7-39.3m/min
- Trolley running speed: 31.1-44.6m/min
- Crane running speed: 76.9-93.6m/min
- Work duty: A5-A7
- Load capacity: 5-320t
- Span: 10.5-31.5 m
- Lifting height: 6-24m
- Lifting speed: 0.2-10.7m/min
- Trolley running speed: 2.4-33m/min
- Crane running speed: 4.2-68m/min
- Work duty: A3-A5
With reliable performance, safe operation, high efficiency, compact structure, easy maintenance, double girder cranes have wide application in warehouse, factory, construction site, material yard.
Our company provides types of double girder overhead cranes for sale, such as industrial overhead crane, casting overhead crane, workstation bridge crane, grab type crane, electromagnetic overhead crane. These cranes are designed and produced based on strict industrial standards. For any type crane you want, just send email to email@example.com.
Great benefits of double girder overhead crane
Many customers choose double girder crane for their work. Double girder cranes can be either top running or under running in design. A top running double girder bridge crane will provide the most overhead room, as well as the greatest hook height.
Double girder cranes are recommended for heavy-duty applications where the crane has to handle heavier capacities and longer spans. Because of this, the components of the crane system, including the hoist and trolley, are more complex in design—making double girder cranes more expensive than a single girder crane.
They also require more material for the bridge beams and the runway system, so extra consideration should be given to the building’s support structure. Additional tie-backs or support columns may need to be added to handle the additional deadweight on the supports or building foundation.
Double girder bridge cranes are ideal for lifting heavy loads and can be used in more frequent operation than a single girder crane. They can also be used both indoors and outdoors, in a bridge or gantry setup, and are frequently used in mining, iron and steel production, railyards, and shipping ports.
The price details of double girder traveling crane
Except for quality, price is another important factory that influences the purchase. For such heavy duty overhead crane, the price is not low in common. So what are prices of double girder cranes? How to ensure the price and quality of crane?
Crane cost is influenced by many factors, such as the crane manufacturer, the quality, the market, the producing technology, the delivery. And customers’ requirements also influence the crane price. For example, crane with explosion proof hoist is much expensive than common crane.
To get a cost-effective overhead crane, customers should pay more attention to crane suppliers. Reliable and professional crane supplier can provide best products and fist-class service, such as AIMIX Group. Our company wins high praise because of qualified cranes, reasonable price and one-stop service. If you are interested in our cranes, just contact us now!
Consider about crane system design
A crane that requires a high capacity, wide span, or high lifting height will benefit from a double girder design. A single girder design can be an inexpensive option for a light-duty crane in a production, storage, or assembly facility.
Careful consideration should be given to the design of your overhead crane system. A crane that requires a high capacity, wide span, or high lifting height will benefit from a double girder design, but may cost you more money upfront. Lighter duty cranes that don’t have hook height requirements or abnormal capacities or spans can be an inexpensive option that will help improve the efficiency and safety of your production or assembly facility.
Double girder crane and hoist classifications
Class A- infrequent or standby
These cranes are best for precise handling at slow speeds. They are good choices for powerhouses, public utilities. Turbine rooms, motor rooms, and transformer stations.
Class B-light service
This class is ideal for environments with light service requirements and low speed needs. They can handle two to five lifts per hour, and work well for repair shops, light assembly operations, service buildings and light warehousing.
Class C-moderate service
These cranes are built for use in machine shops, paper-mill machine rooms, and other such environments with moderate service requirements. They can handle loads that average 50% of the rated capacity, making five to ten lifts per hour, with not over 50% of the lifts at rated capacity.
- Load capacity: 5-50t
- Span: 10.5-31.5 m
- Lifting height: 6-30m
- Lifting speed: 0.18-8m/min
- Trolley running speed: 20m/min
- Crane running speed: 20m/min
- Work duty: A3, A4
Class D-heavy service
These cranes may be used in heavy machine shops, foundries, fabricating plants, steel warehouses, container yards, lumber mills, etc., and standard duty bucket, and magnet operations where heavy-duty production is required. In this type of service with 10 to 20 lifts per hour averaging 15 feet, not over 65 percent of the lifts at rated capacity.
Class E-severe service
These cranes are capable of handling loads approaching a rated capacity throughout its life. Applications may include magnet, bucket, magnet/ bucket combination cranes for scrap yards, cement mills, lumber mills, fertilizer plants, container handling, etc., with twenty of more lifts per hour at or near the rated capacity.
Class F-continuous severe service
These cranes must be capable of handling loads approaching rated capacity continuously under severe service conditions throughout its life. Applications may include custom designed specialty cranes. Qualified cranes are essential to performing the critical work tasks affecting the total production facility. These cranes must provide the highest reliability with special attention to ease maintenance features.
What to do before using a crane?
Before lifting the loads with crane, some preparations are necessary.
Ensure all loose material, parts, blocking and packing have been removed from the load;
Remove any slack from the sling and hoisting ropes before lifting the load;
Make sure that the lifting device seats in the saddle of the hook;
Verify that the load is not heavier than the maximum load capacity.
Day-to-day inspections of crane
Inspect the wire rope for abnormalities or damage;
Inspect the drum for proper rope alignment;
Inspect the area around the machine for any indication of leaking or dripping fluids;
Inspect the block and hook for any cracks or damage;
Visually inspect any bumpers for damages or abnormalities;
Visually inspect limit switches for abnormalities and test for proper functionality.