20 Ton Electromagnetic Overhead Crane | 22.5m Span 20/24m Lift
20 ton electromagnetic overhead crane with 22.5m span and 20/24m lifting height, double girder design, 5 ton auxiliary hook, cabin control and A5 duty.
Crane Manufacturer: Yuantai Cranes – 30+ Years Professional Crane Manufacturer from China
Category: Electromagnetic Overhead Crane
Tags: ElectromagneticOverheadCrane
Overview:
This drawing is for a QC electromagnetic overhead crane, model QC 20/5t-22.5m-20/24m A5. The original file name is: 2. QC20/5t-22.5m-20/24m A5 cabin control indoor cabin with hot/cold AC bridge 4 lights trolley 1 light long travel 80m/min trolley 40m/min lifting 8m/min ambient temperature -40~40°C runway 109m rail type KR70 no electromagnet for now electrical quotation separate 1 unit.pdf.
The crane is a double girder overhead crane with electromagnetic devices, configured with a 20 ton main hook and a 5 ton auxiliary hook. It is set up for cabin control, meaning the operator works from an enclosed cabin mounted on the bridge. The cabin includes a hot and cold air conditioner, so operation remains comfortable across the full -40 to 40°C temperature range.
This unit is prepared for overhead crane with magnetic chuck operation. The electromagnetic subassembly is reserved on the drawing, so a magnetic chuck or electromagnetic lifting magnet can be added later once material specifications are confirmed. This is common practice in electromagnetic overhead crane projects where the steel scrap handling or magnetic material lifting requirements are not yet finalized. The crane is built for indoor use in steel mills, foundries, workshops, and material yards where electromagnetic lifting may eventually be needed.
Other key points from the drawing:
- Span: 22.5 m, span tolerance 22,500 ± 4 mm
- Lifting height: 20 m and 24 m
- Long travel speed: 80 m/min
- Trolley travel speed: 40 m/min
- Hoisting speed: 8 m/min
- Runway length: 109 m
- Recommended rail: KR70
- Duty class: M5 / A5
- Power supply: 3-phase, 380 V, 50 Hz
- Lighting: 4 lights on the bridge, 1 light on the trolley
- Electromagnet: Reserved on the drawing but not equipped. Material information was not supplied, so no magnetic chuck is included. Electrical quotation is handled separately.
Two notes from the drawing sheet:
- Distance from the workshop backspin to the crane peak must be more than 300 mm.
- Crane gross weight does not include the electromagnet weight. Lifting weight does include the electromagnet weight.
Project & Drawing Overview
- Equipment Type: QC Electromagnetic Overhead Crane / Double Girder Overhead Crane with Electromagnetic Devices, indoor use, cabin control
- Product Model: QC 20/5t-22.5m-20/24m A5
- Drawing File:QC20/5t-22.5m-20/24m A5 cabin control indoor cabin with hot/cold AC bridge 4 lights trolley 1 light long travel 80m/min trolley 40m/min lifting 8m/min ambient temperature -40~40°C runway 109m rail KR70 no electromagnet for now electrical quotation separate 1 unit
- Drawing Views: Main view (front elevation) and top view (plan)
- Key Components: 1. Bridge structure, 2. Trolley, 3. Long travel mechanism, 4. Electric system, 5. Electromagnetic subassembly (reserved, 1 set)
- Design Notes: Workshop backspin to crane peak >300 mm; gross weight excludes electromagnet; lifting weight includes electromagnet
- Quantity: 1 unit
Main Technical Parameters
| Technical Parameter | Specification |
|---|---|
| Duty Class | M5 (ISO A5) |
| Main Hook Capacity | 20 t (20,000 kg) |
| Auxiliary Hook Capacity | 5 t (5,000 kg) |
| Crane Span | 22.5 m (22,500 ± 4 mm) |
| Lifting Height | 20 m / 24 m |
| Hoisting Speed | 8 m/min (drawing table shows 7.2 / 12.6 m/min) |
| Trolley Travel Speed | 40 m/min |
| Long Travel Speed | 80 m/min |
| Main Hoist Motor Power | 26 kW |
| Auxiliary Hoist Motor Power | 13 kW |
| Trolley Rail Gauge | 2400 mm |
| Recommended Rail Type | KR70 |
| Electromagnet | Reserved, not equipped (material information not provided; magnetic chuck can be added later) |
| Control Mode | Cabin control |
| Cabin Equipment | Hot and cold air conditioner |
| Bridge Lighting | 4 lights |
| Trolley Lighting | 1 light |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Ambient Temperature | -40 to 40°C |
| Runway Length | 109 m |
| Quantity | 1 unit |
Hoist Mechanism Parameters
| Component / Motor Drive | Technical Specification |
|---|---|
| Main Hook Capacity | 20 t |
| Main Hoisting Speed | 8 m/min (drawing table shows 7.2 m/min) |
| Main Hoist Motor Power | 26 kW |
| Auxiliary Hook Capacity | 5 t |
| Auxiliary Hoisting Speed | 12.6 m/min |
| Auxiliary Hoist Motor Power | 13 kW |
| Lifting Height | 20 m / 24 m |
| Working Duty | M5 |
| Power Supply | 380 V, 50 Hz, 3-phase |
Trolley & Crane Traveling Parameters
| Component / Motor Drive | Technical Specification |
|---|---|
| Trolley Travel Speed | 40 m/min |
| Trolley Working Duty | M5 |
| Trolley Rail Gauge | 2400 mm |
| Long Travel Speed | 80 m/min |
| Long Travel Working Duty | M5 |
| Recommended Rail Type | KR70 |
| Runway Length | 109 m |
| Power Supply | 380 V, 50 Hz, 3-phase |
Drawing Views & Structure Details
| View / Item | Description |
|---|---|
| Main View (Front) | Span 22,500 ± 4 mm. Trolley gauge 2400 mm. Cabin dimensions 1030 / 1100 / 2200 / 1900 mm. Distance from workshop backspin to crane peak more than 300 mm. Overall height reference 2420 mm. Right-side dimension chain 2320 / 1450 / 1100 / 903 / 800 / 350 / 261 / 2587 mm. Electromagnetic subassembly (item 5) reserved with chain suspension for future magnetic chuck installation. |
| Top View (Plan) | Double girder electromagnetic overhead crane. Overall dimensions 6944 mm × 3000 mm. Segments 1712 mm and 2232 mm. Trolley with hoisting mechanism, long travel mechanism, cabin control, 4 bridge lights plus 1 trolley light. |
| Structure Type | QC double girder overhead crane with electromagnetic devices. Double girder bridge structure, trolley with main and auxiliary hoists, long travel mechanism, electric system, cabin control. Prepared for future overhead crane with magnetic chuck operation. Built for indoor use at -40 to 40°C. |
| Key Components | 1. Bridge structure, 2. Trolley, 3. Long travel mechanism, 4. Electric system, 5. Electromagnetic subassembly (reserved, 1 set) |
| Operator Cabin | Enclosed cabin with hot and cold air conditioner. Reference dimensions 1030 × 1100 × 2200 mm. Mounted on one side of the bridge. |
| Lighting | 4 lights on the bridge, 1 light on the trolley, for indoor operation. |
Technical Notes
Notes from the drawing sheet:
- Model code: QC 20/5t-22.5m-20/24m A5. "20/5t" is main and auxiliary hook capacity. "22.5m" is span. "20/24m" is lifting height. "A5" is duty class.
- Workshop clearance: Distance from workshop backspin to crane peak must be more than 300 mm.
- Control mode: Cabin control.
- Weight definition: Crane gross weight does not include electromagnet weight. Lifting weight does include electromagnet weight.
- Electromagnet / Magnetic Chuck: Not equipped in this quotation. Material information was not provided. The electromagnetic subassembly is reserved (item 5, 1 set) so an electromagnetic overhead crane magnetic chuck can be added later for steel scrap handling or magnetic material lifting.
- Electrical quotation: Handled separately.
- Cabin air conditioner: Hot and cold AC included, so the operator can work at -40 to 40°C.
- Lighting: 4 lights on the bridge, 1 light on the trolley.
- Runway and rail: Runway length 109 m. Recommended rail KR70.
- Duty class: M5 / A5, for medium-duty indoor work.
- Quantity: 1 unit.
- Drawings and specifications are for reference. For different span, lifting height, speed, motor power, or electromagnetic device configuration, contact us for a free engineering review.
- Do not reproduce, distribute, or manufacture from these drawings without written authorization from Yuantai Crane Machinery. Yuantai is not liable for unauthorized use.
How to Get a Customized Electromagnetic Overhead Crane
This drawing shows a 20/5 ton QC electromagnetic overhead crane with 22.5 m span, 20 m and 24 m lifting height, cabin control, hot and cold AC, 4 bridge lights plus 1 trolley light, for indoor use at -40 to 40°C. The unit is prepared for a magnetic chuck or electromagnetic lifting magnet to be added later. Yuantai Crane builds to your site dimensions and local requirements.
| Step | What Happens |
|---|---|
| Step 1: Send site data | Send main hook capacity (20 t), auxiliary hook capacity (5 t), span (22.5 m), lifting height (20/24 m), runway length (109 m), rail type (KR70), ambient temperature (-40 to 40°C), and control requirements (cabin control). If you need an electromagnetic overhead crane with magnetic chuck, include material type and weight. |
| Step 2: Free CAD drawing and engineering review | We prepare general arrangement drawings, wheel load checks, and structural layouts at no cost. For double girder overhead cranes with electromagnetic devices, we also verify magnet suspension and power supply requirements. |
| Step 3: Confirm the technical details | Lock in trolley type, cabin configuration (hot and cold AC), lighting (4+1), control mode (cabin), power supply (3-phase 380 V 50 Hz), and duty class (M5/A5). Confirm whether the magnetic chuck will be equipped now or reserved for later. |
| Step 4: Manufacturing and delivery | Built to international standards. Factory acceptance test (FAT) before dispatch. |
FAQ (QC 20/5t-22.5m-20/24m A5 Electromagnetic Overhead Crane Drawing)
Common questions about electromagnetic overhead cranes, double girder overhead cranes with electromagnetic devices, overhead cranes with magnetic chuck, 20 ton main hook, 5 ton auxiliary hook, 22.5 m span, 20/24 m lifting height, cabin control, hot and cold AC, and -40 to 40°C ambient temperature.
1. What is an electromagnetic overhead crane and how does it work?
An electromagnetic overhead crane is a bridge crane equipped with an electromagnet or magnetic chuck instead of a standard hook. When DC current flows through the coil, it creates a strong magnetic field that grips ferrous materials like steel scrap, steel plates, and billets. When the current is cut, the magnetic force drops and the material releases. A double girder overhead crane with electromagnetic devices combines heavy lifting capacity with magnetic material handling. Some systems include a battery backup that holds the load for about 30 minutes if power fails[citation:9][citation:4].
2. Why is the electromagnet reserved but not equipped on this crane?
The customer did not provide material information, so no magnetic chuck is included in this quotation. The electromagnetic subassembly (item 5, 1 set) is reserved on the drawing, so a magnetic chuck or electromagnetic lifting magnet can be added later once material specs are known. The electrical quotation is handled separately because the electromagnet control system is not part of this scope. This is a common approach for electromagnetic overhead crane projects where the material handling requirements are still being defined.
3. What is the difference between an electromagnetic overhead crane and a standard overhead crane?
A standard overhead crane uses a hook, grab, or sling to lift loads. An electromagnetic overhead crane uses a magnetic chuck or electromagnet to grip ferrous materials directly. The magnetic approach is faster for steel scrap handling, steel plates, and billets because there is no need to rig slings. This particular crane combines both capabilities: it has a 20 t main hook and 5 t auxiliary hook for regular lifting, plus a reserved electromagnetic subassembly for future overhead crane with magnetic chuck operation[citation:1][citation:3].
4. What materials can a magnetic chuck overhead crane lift?
Overhead cranes with magnetic chuck handle ferrous materials only: steel scrap, steel plates, steel billets, steel ingots, pig iron, iron chips, and similar magnetic metals. They cannot lift non-ferrous materials like aluminum, copper, or stainless steel (unless specially treated), and they cannot lift hot materials above the Curie temperature because hot iron loses its magnetic properties[citation:20][citation:16]. For this project, the electromagnet is reserved for future use in steel scrap handling or similar applications.
5. What does QC 20/5t-22.5m-20/24m A5 mean?
QC = double girder electromagnetic overhead crane. "20/5t" = 20 t main hook, 5 t auxiliary hook. "22.5m" = 22.5 m span. "20/24m" = 20 m and 24 m lifting height. "A5" = ISO A5 duty class (M5). This is a medium-duty crane for indoor work[citation:3][citation:8].
6. What power supply does this electromagnetic overhead crane need?
3-phase, 380 V, 50 Hz. This covers the 26 kW main hoist motor, the 13 kW auxiliary hoist motor, the trolley travel motor, the long travel motors, the cabin control system, and the lighting. If a magnetic chuck is added later, the electromagnet and its control system will also operate on this power supply. The electrical quotation for the electromagnet system is handled separately[citation:3][citation:8].
7. What is the recommended rail type for this double girder overhead crane with electromagnetic devices?
The recommended rail type is KR70. This rail size matches the 20/5 t capacity, 22.5 m span, and 80 m/min long travel speed. The correct rail ensures smooth travel, proper wheel contact, and long service life. For cranes with magnetic chuck equipment, the additional weight of the electromagnet and its cable management system is factored into the wheel load calculations[citation:4].
8. What safety features are recommended for an electromagnetic overhead crane?
Key safety features for electromagnetic overhead cranes include: battery backup or capacitor buffer to maintain holding force for at least 30 seconds after power failure; swivel-type mechanical suspension to prevent cable twist; armored flexible cable rated for crane trailing applications; and residual magnetism release to ensure clean material drop. For high-cycle scrap handling, magnet coils should be rated for at least 60% duty cycle, with ED75% or ED100% for continuous operation[citation:4]. This crane is prepared for these features when the magnetic chuck is added.
Need a Drawing and Price for Your Electromagnetic Overhead Crane?
Send your site dimensions, capacity, span, lifting height, runway length, rail type, temperature range, and control requirements. If you need a double girder overhead crane with electromagnetic devices or an overhead crane with magnetic chuck, include your material type (steel scrap, plates, billets, etc.) and weight. Yuantai Crane will send a CAD layout drawing and a price within 24 hours.
Yuantai Electromagnetic Overhead Crane Solutions
Yuantai Crane builds custom electromagnetic overhead cranes, double girder overhead cranes with electromagnetic devices, and overhead cranes with magnetic chuck for steel mills, foundries, scrap yards, workshops, warehouses, and heavy industrial sites worldwide. Each crane is built to your capacity, span, lifting height, hook setup, electromagnetic configuration, control mode, and power supply.
Typical range:
- Main hook capacity: 5–500 t (this model: 20 t)
- Auxiliary hook capacity: 2–100 t (this model: 5 t)
- Span: 10.0–40.0 m (this model: 22.5 m)
- Lifting height: 6.0–30.0 m (this model: 20/24 m)
- Duty class: ISO A5–A8 (this model: M5/A5)
- Control mode: Cabin, pendant, or remote (this model: cabin control)
- Structure: Double girder, bridge type, prepared for electromagnetic devices
- Power supply: 3-phase 380 V 50 Hz (customizable)
- Applications: Steel mills, foundries, steel scrap handling, workshops, warehouses, heavy industrial plants
Yuantai handles engineering design, non-standard structural customization, electromagnetic system integration, factory acceptance testing (FAT), export packing, logistics, and installation guidance.
Engineering and Customization Support
A 20 t main hook and 5 t auxiliary hook on a 22.5 m span, 20/24 m lifting height, cabin control with hot and cold AC, 4+1 lighting, and a -40 to 40°C range needs proper mechanical and electrical design. This drawing shows the structural layout, cabin setup, and power delivery Yuantai Crane uses for indoor overhead crane projects. The reserved electromagnetic subassembly is ready for a magnetic chuck to be added later, turning this into a full electromagnetic overhead crane for steel scrap handling.
| Site Requirement | Yuantai Solution | Drawing Parameters |
|---|---|---|
| Indoor use at -40 to 40°C Operator comfort across a wide temperature range. | QC electromagnetic overhead crane with cabin control and hot/cold AC. | Main hook 20 t | Aux hook 5 t | Cabin AC hot/cold | Ambient -40 to 40°C |
| Fast travel on a 109 m runway Long runway needs quick long travel and trolley travel. | Long travel 80 m/min, trolley travel 40 m/min, hoisting 8 m/min. | Long travel 80 m/min | Trolley 40 m/min | Hoist 8 m/min | Runway 109 m |
| Magnetic chuck may be added later Material info not ready, but future electromagnetic lifting is planned. | Electromagnetic subassembly reserved on the drawing. Electrical quotation handled separately. Can become a full overhead crane with magnetic chuck when needed. | Electromagnet reserved | Subassembly 1 set | Electrical separate |
Does This Electromagnetic Overhead Crane Fit Your Facility?
- 20/5 t QC double girder overhead crane with electromagnetic devices: 22.5 m span, 20/24 m lifting height, for indoor general lifting and future magnetic chuck operation.
- Cabin control with hot and cold AC: operator comfort at -40 to 40°C.
- 4 bridge lights + 1 trolley light: good visibility indoors.
- Fast travel: 80 m/min long travel,
Yuantai Cranes
Overhead Crane Manufacturer with CE, ISO, SGS, CNEX Certificates.
- Main Specifications - Capacity: 0.5–550 tons | Span: up to 40m | Speed: 0.8–12 m/min | Duty: A3–A7 | Power: 380–690V, 50/60Hz | Control: pendant/remote/cabin
- Full engineering: FEA/PLC/VFD + in-house build + global delivery + on-site support, for workshops, factories, EPC contractors, industrial projects, etc.
- Support: design, manufacturing, testing, service – end-to-end, customized lifting solutions worldwide.
How to Get an Accurate Crane Price for Your Application?
Tips: Copy the spec list, fill in your details, and paste it into the form on the right/ down-below for a quick price.
- Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
- Max weight to lift:_____ tons. (e.g., 2t, 5t, 10t, 20t, 50t)
- Lifting height:_____ m. (How high does the hook need to reach?
- Workshop width (span):_____ m . (Distance between the two crane rails)
- Travel distance:_____ m . (How long does the crane need to move along the runway?)
- Control type:_____. (Pendant / remote / cabin Control)
- Power supply:_____. (Local voltage & frequency – e.g., 380V, 50Hz, 3-phase)
- What will it be used for?_____ (e.g., steel fabrication, concrete products, mold handling, general manufacturing, etc.)
- Any special requirements?_____ (e.g., extreme temperature, dusty or explosive environment, special paint color, etc.)
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