20 Ton Overhead Crane for Steel Coil Lifting with Electromagnetic Coil Lifter
Short Video Description
This video shows a 20 ton overhead crane for vertical steel coil lifting equipped with an electromagnetic coil lifter. The system is designed for handling steel coils in steel mills, coil warehouses, steel processing plants and material storage areas.
The 20 ton overhead crane uses a double girder bridge structure with an electromagnetic lifting attachment designed for vertical steel coils. The coil lifter is positioned inside or against the coil according to the actual coil geometry and lifting method.
For vertical steel coil lifting, the crane and electromagnetic coil lifter must be designed according to the coil weight, outer diameter, inner diameter, coil width, steel grade, surface condition and required lifting position. The lifting attachment must also maintain stable contact with the steel coil during crane travel.
Yuantai engineers consider the crane capacity, coil lifter capacity, coil dimensions, center of gravity, lifting height, working frequency, duty class and coil handling process before finalizing the complete crane system.
Main Technical Specifications
| Item | Technical Specification |
|---|---|
| Crane type | 20 Ton Double Girder Overhead Crane for Steel Coil Handling |
| Rated capacity | 20 ton, customized for actual coil weight |
| Lifting attachment | Electromagnetic Coil Lifter / Magnetic Coil Lifting Attachment |
| Load type | Vertical steel coils, steel rolls and other suitable ferrous coils |
| Crane structure | Double girder overhead bridge crane with heavy-duty end carriages |
| Span | 10 – 35 m+, customized according to workshop layout |
| Lifting height | 6 – 20 m+, customized according to coil storage height |
| Coil weight | Up to 20 ton or customized according to lifting requirement |
| Coil outer diameter | Customized according to actual steel coil dimensions |
| Coil inner diameter | Customized according to the electromagnetic coil lifter design |
| Coil width | Customized according to the steel coil specification |
| Duty class | ISO A5 – A6 / FEM 2M – 3M, higher duty available |
| Hoisting speed | 3 – 12 m/min, customized |
| Trolley speed | 20 – 40 m/min, VFD available |
| Crane travelling speed | 20 – 40 m/min, customized |
| Control | Pendant / Radio Remote / Operator Cabin |
| Power supply | 380V / 50Hz / 3Ph standard; other voltage and frequency available |
| Safety devices | Overload limiter, travel limit switches, emergency stop, warning alarm and lifting attachment monitoring |
| Applications | Steel mills, coil warehouses, steel processing plants, rolling mills, coil storage yards and fabrication facilities |
| Yuantai Crane engineering | Crane structure, electromagnetic coil lifter, lifting mechanism, coil dimensions and load stability are engineered as one complete system. |
How Does an Electromagnetic Coil Lifter Handle Vertical Steel Coils?
An electromagnetic coil lifter uses magnetic force to securely engage a ferrous steel coil for lifting and transportation. The lifting attachment is designed according to the coil's geometry and required lifting orientation.
For vertical steel coils, the coil lifter must provide sufficient magnetic contact and stable load support. The crane operator can then lift, travel and position the coil within the designated storage or production area.
The actual magnetic lifting capacity depends on the steel material, coil dimensions, surface condition, contact area, air gap and operating conditions. Therefore, the magnet capacity should be selected from the actual coil specifications rather than only from the 20 ton crane rating.
Why Use a 20 Ton Overhead Crane for Steel Coil Handling?
A 20 ton overhead crane for steel coil handling is suitable when steel coils are too heavy for conventional forklifts or standard material handling equipment. The overhead crane provides controlled lifting and horizontal transportation throughout the workshop or warehouse.
- 20 ton rated lifting capacity for heavy steel coils
- Double girder bridge for improved structural rigidity
- Electromagnetic coil lifter for fast steel coil pickup
- Suitable for repeated coil handling operations
- Suitable for steel mills and coil warehouses
- Customized coil lifter for different coil dimensions
- Radio remote or cabin control available
- VFD control available for smoother coil positioning
20 Ton Overhead Crane with Electromagnetic Coil Lifter
The electromagnetic coil lifter is an important part of the complete steel coil handling system. Its dimensions and magnetic capacity must match the actual coil specification.
For a 20 ton crane, the maximum crane capacity does not automatically mean that every 20 ton coil can be lifted using the same magnetic attachment. The coil diameter, width, steel grade, surface condition and lifting orientation must be evaluated before selecting the lifter.
Yuantai engineers can configure the electromagnetic coil lifter, lifting mechanism and overhead crane as an integrated system for repetitive steel coil handling.
Key Design Factors for Vertical Steel Coil Lifting
| Design Factor | Effect on Coil Lifting |
|---|---|
| Coil weight | Determines the required crane and electromagnetic lifter capacity. |
| Coil outer diameter | Affects the coil lifter dimensions and magnetic contact arrangement. |
| Coil inner diameter | Important when the lifter is designed to engage the coil opening. |
| Coil width | Affects the lifting attachment geometry and load stability. |
| Steel grade | Different magnetic properties can affect the effective lifting force. |
| Surface condition | Rust, scale, coating and air gaps can reduce effective magnetic force. |
| Lifting orientation | Determines the required coil lifter configuration and load support. |
| Center of gravity | Affects coil stability during lifting and crane travel. |
| Working frequency | Determines crane duty class and electromagnetic system requirements. |
Vertical Coil Lifting vs Horizontal Coil Lifting
| Item | Vertical Steel Coil Lifting | Horizontal Steel Coil Lifting |
|---|---|---|
| Coil orientation | Coil axis is generally vertical | Coil axis is generally horizontal |
| Lifting attachment | Vertical coil lifter designed for the coil geometry | Horizontal coil lifting attachment or suitable magnetic system |
| Typical storage | Vertical coil storage | Horizontal coil storage |
| Key design concern | Coil stability and magnetic contact | Coil support and load orientation |
| Typical application | Steel warehouses, rolling mills and coil processing areas | Coil yards and steel processing facilities |
How Yuantai Designs a 20 Ton Steel Coil Handling Crane
Yuantai engineers design the 20 ton overhead crane and electromagnetic coil lifter according to the actual coil handling process.
- Confirm maximum and minimum coil weight
- Confirm coil outer diameter and inner diameter
- Confirm coil width and steel grade
- Confirm vertical or horizontal lifting orientation
- Determine required electromagnetic lifting capacity
- Check magnetic contact area and air gap
- Calculate crane span and lifting height
- Select suitable ISO/FEM duty class
- Check coil stability during crane travel
- Configure control and safety monitoring systems
This approach allows the steel coil lifting crane to be designed around the actual coil dimensions and production process rather than using a standard lifting attachment.
Typical Applications for 20 Ton Electromagnetic Coil Cranes
A 20 ton overhead crane with electromagnetic coil lifter can be used for:
- Steel coil lifting
- Vertical steel coil handling
- Steel coil warehouse transfer
- Rolling mill coil handling
- Steel processing lines
- Coil loading and unloading
- Steel storage yards
- Metal fabrication plants
- Heavy-duty steel warehouses
FAQ: 20 Ton Overhead Crane for Steel Coil Lifting
Common questions about electromagnetic coil lifters, vertical steel coil lifting, double girder overhead cranes and steel coil handling.
1. What is a 20 ton overhead crane with electromagnetic coil lifter?
A 20 ton overhead crane with electromagnetic coil lifter is a crane system designed to lift and transport steel coils using magnetic lifting force instead of conventional hooks and slings.
A double girder overhead crane is commonly used for heavy steel coil handling because it provides a rigid bridge structure and is suitable for frequent industrial lifting.
2. Can an electromagnetic coil lifter lift a 20 ton steel coil?
Yes, provided the electromagnetic coil lifter is specifically designed and rated for the actual steel coil. The 20 ton crane capacity alone does not determine the magnetic lifting capacity.
Coil weight, steel grade, coil dimensions, surface condition, air gap and lifting orientation must be checked before selecting the lifter.
3. Can this crane lift vertical steel coils?
Yes. The crane can be configured for vertical steel coil lifting with an electromagnetic coil lifter designed for the required coil orientation.
The lifter geometry, magnetic force and coil stability must be checked according to the actual coil outer diameter, inner diameter, width and weight.
4. What steel coil dimensions are needed for crane design?
Provide the coil weight, outer diameter, inner diameter, coil width, steel grade, surface condition and lifting orientation.
The crane design also requires the span, lifting height, working frequency, travelling distance and required storage or production positions.
5. Is a double girder overhead crane suitable for steel coil handling?
Yes. A double girder overhead crane is widely suitable for heavy steel coil handling because of its rigid bridge structure and ability to accommodate higher lifting capacities and industrial duty classes.
The crane can be equipped with an electromagnetic coil lifter, hook, C-hook or other customized coil handling attachment depending on the application.
6. What information is needed for a 20 ton steel coil crane quotation?
Provide the maximum coil weight, coil diameter, inner diameter, coil width, steel grade, lifting orientation, crane span, lifting height, working frequency, travelling distance and power supply.
Photos, drawings or coil specification sheets are useful for selecting the correct electromagnetic coil lifter.
7. What experience does Yuantai Crane have with steel coil handling cranes?
Yuantai Crane has engineering experience with double girder overhead cranes, electromagnetic lifting cranes, steel coil handling cranes, magnetic lifting systems and customized steel material handling equipment.
For coil handling applications, Yuantai engineers review the crane structure, electromagnetic coil lifter, coil dimensions, lifting orientation, center of gravity, duty class and operating environment as one complete lifting system.
Need a 20 Ton Overhead Crane for Vertical Steel Coil Lifting?
Send us your coil weight, outer diameter, inner diameter, coil width, steel grade, lifting orientation, crane span, lifting height and working frequency.
Yuantai Crane can engineer a 20 ton overhead crane with electromagnetic coil lifter for vertical steel coil lifting, steel mills, rolling mills, coil warehouses and other heavy-duty steel handling applications.
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Article by Bella ，who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.
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