20 Ton Electromagnetic Overhead Crane | 29.5m Span A8
20 ton electromagnetic overhead crane with 29.5m span and 10m+20m lifting heights, rotating trolley, magnetic beam, two magnetic chucks and A8 duty.
Crane Manufacturer: Yuantai Cranes – 30+ Years Professional Crane Manufacturer from China
Category: Electromagnetic Overhead Crane
Tags: ElectromagneticOverheadCrane
Overview:
This drawing is for a QCL electromagnetic overhead crane, model QCL 10t+10t-29.5m-10m+20m A8. The original file name is: 5. QCL10t+10t-29.5m-10m+20m A8 cabin control rotating trolley electromagnetic beam with 2 sets of magnetic chucks 1500×950 for square billet SQ130mm SQ160mm SQ200mm and round bar 220mm handling and scale removal grab bucket descaling 1 unit.pdf.
The crane is a double girder overhead crane with electromagnetic devices, built with a rotating trolley and an electromagnetic beam (magnetic beam). It is fitted with 2 sets of magnetic chucks 1500×950 for handling square billets (SQ130 mm, SQ160 mm, SQ200 mm) and round bars (220 mm). The crane also handles scale removaland grab bucket descaling in the billet yard.
Key design features:
- Double lifting capacity: 10 t + 10 t (two hooks / two lifting points)
- Rotating trolley: the trolley can rotate to align the magnetic beam with the billet or round bar direction
- Electromagnetic beam (magnetic beam): a spreader beam fitted with 2 magnetic chucks
- 2 magnetic chucks 1500×950: for gripping square billets and round bars
- Application: billet handling, round bar handling, scale removal, grab bucket descaling
- Cabin control with the operator in an enclosed cabin on the bridge
- Duty class A8 for continuous heavy duty work
- Built to GB/T14405 (Chinese national standard for overhead cranes)
Other key points from the drawing:
- Span: 29.5 m, span tolerance 29,500 ± 5 mm
- Lifting height: 10 m + 20 m (main hook 10 m, auxiliary hook 20 m)
- Lifting speed (main hook): 8.6 m/min
- Lifting speed (auxiliary hook): 8.6 m/min
- Trolley travel speed: 51.4 m/min
- Trolley rotating speed: 1.1 r/min
- Crane travel speed: 51.4 m/min
- Duty class: A8 (hoist M8, trolley travel M7, trolley rotating M7, crane travel M8)
- Power supply: 3-phase, 50 Hz, 415 V
- Electromagnet: 2 sets of magnetic chucks 1500×950, model MW38-14095L/1, normal ambient temperature electromagnets
- Standards: GB/T14405
Two notes from the drawing sheet:
- Manufactured according to relevant regulation of GB/T14405.
- Distance from workshop backspin to crane peak should be more than 400 mm.
- Control mode: cabin control.
- Crane gross weight does not include the electromagnet weight. Lifting weight does include the electromagnet weight.
Project & Drawing Overview
- Equipment Type: QCL Electromagnetic Overhead Crane / Double Girder Overhead Crane with Rotating Trolley and Magnetic Beam, cabin control
- Product Model: QCL 10t+10t-29.5m-10m+20m A8
- Drawing File: QCL10t+10t-29.5m-10m+20m A8 cabin control rotating trolley electromagnetic beam with 2 sets of magnetic chucks 1500×950 for square billet SQ130mm SQ160mm SQ200mm and round bar 220mm handling and scale removal grab bucket descaling 1 unit.
- Drawing Views: Main view (front elevation), top view (plan), and trolley detail view
- Key Components: 1. Bridge structure, 2. Rotating trolley, 3. Long travel mechanism, 4. Electric system, 5. Normal ambient temperature electromagnets (subassembly, 1 set, 2 magnetic chucks 1500×950, model MW38-14095L/1)
- Design Notes: Built to GB/T14405; workshop backspin to crane peak >400 mm; gross weight excludes electromagnet; lifting weight includes electromagnet
- Quantity: 1 unit
Main Technical Parameters
| Technical Parameter | Specification |
|---|---|
| Duty Class | A8 (hoist M8, trolley travel M7, trolley rotating M7, crane travel M8) |
| Lifting Capacity (Main + Aux) | 10 t + 10 t (20,000 kg total) |
| Crane Span | 29.5 m (29,500 ± 5 mm) |
| Lifting Height | 10 m + 20 m (main hook 10 m, auxiliary hook 20 m) |
| Main Lifting Speed | 8.6 m/min |
| Auxiliary Lifting Speed | 8.6 m/min |
| Trolley Travel Speed | 51.4 m/min |
| Trolley Rotating Speed | 1.1 r/min |
| Crane Travel Speed | 51.4 m/min |
| Main Hoist Motor Power | 2 × 22 kW |
| Auxiliary Hoist Motor Power | 2 × 7.5 kW |
| Trolley Travel Motor Power | 2 × 2.2 kW |
| Trolley Rotating Motor Power | 2 × 1.5 kW |
| Trolley Rail Gauge | 5500 mm |
| Trolley Wheel Base | 6000 mm |
| Electromagnet | 2 sets of magnetic chucks 1500×950, model MW38-14095L/1, normal ambient temperature electromagnets |
| Application | Square billet SQ130/SQ160/SQ200, round bar 220 mm, scale removal, grab bucket descaling |
| Control Mode | Cabin control |
| Power Supply | 3-phase, 50 Hz, 415 V |
| Standard | GB/T14405 |
| Quantity | 1 unit |
Hoist Mechanism Parameters
| Component / Motor Drive | Technical Specification |
|---|---|
| Main Hook Capacity | 10 t |
| Main Lifting Speed | 8.6 m/min |
| Main Hoist Motor Power | 2 × 22 kW |
| Main Hoist Motor Model | YZR200L-6 |
| Auxiliary Hook Capacity | 10 t |
| Auxiliary Lifting Speed | 8.6 m/min |
| Auxiliary Hoist Motor Power | 2 × 7.5 kW |
| Lifting Height | 10 m / 20 m |
| Working Duty | M8 |
| Wire Rope | 14NAT6*19(W)-FC1770 |
| Rope Falls | 2*6 |
| Rope Drum Diameter | Ø400 / Ø1500 mm |
| Power Supply | 415 V, 50 Hz, 3-phase |
Trolley Travel, Trolley Rotating & Crane Traveling Parameters
| Component / Motor Drive | Technical Specification |
|---|---|
| Trolley Travel Speed | 51.4 m/min |
| Trolley Travel Motor Power | 2 × 2.2 kW |
| Trolley Travel Working Duty | M7 |
| Trolley Rail Gauge | 5500 mm |
| Trolley Wheel Base | 6000 mm |
| Trolley Rotating Speed | 1.1 r/min |
| Trolley Rotating Motor Power | 2 × 1.5 kW |
| Trolley Rotating Working Duty | M7 |
| Crane Travel Speed | 51.4 m/min |
| Crane Travel Motor Power | 2 × 7.5 kW |
| Crane Travel Working Duty | M8 |
| Recommended Rail Type | P43 / QU70 (per drawing) |
| Max. Wheel Load | Trolley 77.3 kN / Crane 261.6 kN |
| Power Supply | 415 V, 50 Hz, 3-phase |
Drawing Views & Structure Details
| View / Item | Description |
|---|---|
| Main View (Front) | Span 29,500 ± 5 mm. Trolley gauge 5500 mm. Cabin dimensions 1100 / 2200 mm. Distance from workshop backspin to crane peak more than 400 mm. Electromagnetic beam (item 5) suspended from the rotating trolley, fitted with 2 magnetic chucks 1500×950, model MW38-14095L/1. Right-side dimension chain 600 / 870 / 903 / 700 / 1100 / 350 / 350 / 300 / 3693 / 1000 mm. |
| Top View (Plan) | Double girder electromagnetic overhead crane with rotating trolley. Overall dimensions 5500 mm × 3000 mm (reference). Trolley with rotating ring and magnetic beam. Segments 1912 mm and 2562 mm. Long travel mechanism, cabin control. |
| Trolley Detail View | Rotating trolley with ring gear and drive. Overall dimensions 8100 mm × 1262 mm. Main frame 5500 mm. Trolley gauge 3500 mm. Magnetic beam 4500 mm with 2 magnetic chucks. Hook approach 1000 / 4000 / 1000 mm. Trolley overall height 940 mm. |
| Structure Type | QCL double girder overhead crane with rotating trolley and electromagnetic beam. Double girder bridge structure, rotating trolley with VFD hoist and rotation drive, electromagnetic beam with 2 magnetic chucks, long travel mechanism, cabin control. Built to GB/T14405 for billet and round bar handling, scale removal, and grab bucket descaling. |
| Key Components | 1. Bridge structure, 2. Rotating trolley, 3. Long travel mechanism, 4. Electric system, 5. Normal ambient temperature electromagnets (subassembly, 1 set, 2 magnetic chucks 1500×950, model MW38-14095L/1) |
| Electromagnetic Beam | Magnetic beam fitted with 2 magnetic chucks 1500×950, model MW38-14095L/1. Normal ambient temperature electromagnets. Suspended from the rotating trolley. Beam length 4500 mm (reference). |
| Control System | Cabin control. Full VFD on hoist, trolley travel, trolley rotating, and long travel. |
Technical Notes
Notes from the drawing sheet:
- Model code: QCL 10t+10t-29.5m-10m+20m A8. "QCL" = electromagnetic overhead crane with rotating trolley and magnetic beam. "10t+10t" = dual 10 t lifting capacity. "29.5m" = span. "10m+20m" = main and auxiliary lifting heights. "A8" = duty class.
- Standard: Manufactured according to relevant regulation of GB/T14405.
- Workshop clearance: Distance from workshop backspin to crane peak should be more than 400 mm.
- Control mode: Cabin control.
- Weight definition: Crane gross weight does not include electromagnet weight. Lifting weight does include electromagnet weight.
- Electromagnet / Magnetic Chuck: 2 sets of magnetic chucks 1500×950, model MW38-14095L/1, normal ambient temperature electromagnets. Suspended from the rotating trolley via the electromagnetic beam. 1 set (item 5).
- Application: Square billet SQ130 mm, SQ160 mm, SQ200 mm and round bar 220 mm handling; scale removal; grab bucket descaling in the billet yard.
- Rotating trolley: The trolley rotates at 1.1 r/min to align the magnetic beam with the billet or round bar direction.
- Mechanism classes: Hoist M8, trolley travel M7, trolley rotating M7, crane travel M8. Overall duty A8.
- Power supply: 3-phase, 50 Hz, 415 V.
- 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 with Rotating Trolley
This drawing shows a 10 t + 10 t QCL electromagnetic overhead crane with 29.5 m span, 10 m + 20 m lifting height, rotating trolley, electromagnetic beam, and 2 magnetic chucks 1500×950 for square billet and round bar handling, scale removal, and grab bucket descaling. The crane is built to GB/T14405 with cabin control and A8 duty. Yuantai Crane builds to your site dimensions and local requirements.
| Step | What Happens |
|---|---|
| Step 1: Send site data | Send lifting capacity (10 t + 10 t), span (29.5 m), lifting height (10 m + 20 m), material type (square billet SQ130/SQ160/SQ200, round bar 220 mm), scale removal requirement, grab bucket descaling requirement, and control requirements (cabin control). |
| 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 rotating trolley and electromagnetic beam, we also verify trolley rotation drive, magnetic beam geometry, and magnet placement for billet and round bar handling. |
| Step 3: Confirm the technical details | Lock in hoist mechanism class (M8), trolley travel and rotating class (M7), crane travel class (M8), cabin configuration, control mode (cabin), VFD configuration, power supply (3-phase 415 V 50 Hz), duty class (A8), and magnetic chuck model (MW38-14095L/1, 1500×950). |
| Step 4: Manufacturing and delivery | Built to GB/T14405 and international standards. Factory acceptance test (FAT) before dispatch. |
FAQ (QCL 10t+10t-29.5m-10m+20m A8 Electromagnetic Overhead Crane Drawing)
Common questions about QCL electromagnetic overhead cranes, double girder overhead cranes with rotating trolley and magnetic beam, overhead cranes with magnetic chuck, 2 magnetic chucks 1500×950, square billet SQ130/SQ160/SQ200 handling, round bar 220 mm handling, scale removal, grab bucket descaling, cabin control, and A8 duty.
1. What is a QCL electromagnetic overhead crane with rotating trolley?
A QCL electromagnetic overhead crane is a double girder bridge crane fitted with a rotating trolley and an electromagnetic beam (magnetic beam). The rotating trolley turns the magnetic beam to align with the direction of the material — for example, to match the length of a square billet or round bar. The magnetic beam carries 2 magnetic chucks 1500×950 that grip the material for lifting. This design is used in billet yards and steel processing lines where the load direction changes and the crane must handle both square billets (SQ130/SQ160/SQ200) and round bars (220 mm) with the same tool.
2. Why does this crane have 2 magnetic chucks instead of 1?
Using 2 magnetic chucks 1500×950 on a magnetic beam gives better load stability and higher lifting capacity for long workpieces such as square billets and round bars. The two chucks grip the load at two points along its length, which reduces bending stress and prevents the load from swinging. The beam length is matched to the billet and round bar length so both chucks sit on a solid section of the load. This is common practice for billet handling cranes and round bar handling cranes in steel mills.
3. What is the rotating trolley used for?
The rotating trolley turns the magnetic beam and the 2 magnetic chucks to match the direction of the load. In a billet yard, billets may be stacked in one direction but need to be placed in another direction on a conveyor or in a furnace. Instead of turning the whole crane or using a separate turning device, the trolley rotates at 1.1 r/min to align the beam. This saves time, reduces the number of motions needed per lift, and improves safety because the load is always held squarely.
4. What materials can this crane handle — square billet SQ130/SQ160/SQ200 and round bar 220 mm?
This crane is specified for square billets SQ130 mm, SQ160 mm, SQ200 mm and round bars 220 mm. These are ferrous materials, so the magnetic chucks can grip them directly. The magnetic beam and chuck spacing are set so the chucks sit on a flat section of the billet or bar. The crane also handles scale removal and grab bucket descaling in the billet yard — the magnetic beam is used for the billet handling part, while a grab bucket (suspended from the hook) is used for the descaling part.
5. What is scale removal and grab bucket descaling in this application?
Scale removal (氧化皮清除) means removing the oxide scale that forms on hot-rolled billets and round bars. Grab bucket descaling means using a grab bucket suspended from the crane hook to clean scale from a pit or scale pit in the billet yard. The same crane supports both jobs: the magnetic beam with 2 magnetic chucks handles the billet and round bar lifting, and the hook supports a grab bucket for the scale pit cleaning. This dual-purpose design reduces the number of cranes needed in the billet yard.
6. What does the magnetic chuck model MW38-14095L/1 mean?
MW38-14095L/1 is the magnetic chuck model used on this crane. The "MW" prefix indicates a magnetic chuck. The "38" refers to the magnet series and pole configuration. "14095" refers to the magnet dimensions and coil data. The "L/1" indicates the version and coil type. This model is a normal ambient temperature electromagnet (not high temperature), because the billets and round bars are handled at ambient temperature in the billet yard. The chuck size is 1500×950, and 2 chucks are fitted on the magnetic beam.
7. What does GB/T14405 mean for this crane?
GB/T14405 is the Chinese national standard for general purpose overhead cranes. It covers design, manufacturing, inspection, and testing requirements. Building to GB/T14405 means the crane meets the structural, mechanical, electrical, and safety requirements for overhead cranes in China. For export projects, Yuantai can also build to other international standards such as FEM, ISO, or CMAA if required.
8. What safety features are recommended for an electromagnetic overhead crane with rotating trolley?
Key safety features for an electromagnetic overhead crane with rotating trolley include: battery backup or capacitor buffer to maintain holding force for at least 30 minutes after power failure; mechanical locking or braking on the trolley rotation drive to prevent unintended rotation; swivel-type suspension on the magnetic beam to prevent cable twist; armored flexible cable rated for crane trailing applications; and residual magnetism release to ensure clean material drop. The rotating trolley should also have limit switches to prevent over-rotation. This crane is specified with these features.
Need a Drawing and Price for Your Electromagnetic Overhead Crane with Rotating Trolley?
Send your site dimensions, capacity, span, lifting height, material type (square billet SQ130/SQ160/SQ200, round bar 220 mm, etc.), scale removal and grab bucket descaling requirements, and control requirements. If you need a double girder overhead crane with rotating trolley and magnetic beam, an overhead crane with magnetic chuck, or a QCL electromagnetic overhead crane for billet and round bar handling, 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, overhead cranes with magnetic chuck, QCL electromagnetic overhead cranes with rotating trolley and magnetic beam for steel mills, billet yards, round bar handling lines, scrap yards, foundries, and heavy industrial sites worldwide. Each crane is built to your capacity, span, lifting height, hook setup, electromagnetic configuration, magnetic chuck size, rotating trolley requirement, control mode, and power supply.
Typical range:
- Lifting capacity: 5–500 t (this model: 10 t + 10 t)
- Span: 10.0–40.0 m (this model: 29.5 m)
- Lifting height: 6.0–30.0 m (this model: 10 m + 20 m)
- Duty class: ISO A5–A8 (this model: A8)
- Hoist mechanism class: M5–M8 (this model: M8)
- Trolley travel class: M5–M8 (this model: M7)
- Trolley rotating: available on request (this model: 1.1 r/min, M7)
- Crane travel class: M5–M8 (this model: M8)
- Control mode: Cabin, pendant, remote, or cabin + remote (this model: cabin control)
- Speed control: Full VFD (this model)
- Electromagnet: Normal or high temperature, up to 650°C (this model: normal ambient, MW38-14095L/1, 1500×950, 2 sets)
- Structure: Double girder, bridge type, with rotating trolley and electromagnetic beam
- Power supply: 3-phase 380 V / 415 V 50 Hz (customizable)
- Applications: Steel mills, billet yards, round bar handling, scale removal, grab bucket descaling, scrap yards, foundries
Yuantai handles engineering design, non-standard structural customization, rotating trolley integration, electromagnetic beam design, magnetic chuck selection, factory acceptance testing (FAT), export packing, logistics, and installation guidance.
Engineering and Customization Support
A 10 t + 10 t capacity on a 29.5 m span with 10 m + 20 m lifting height, rotating trolley, electromagnetic beam, and 2 magnetic chucks 1500×950 for square billet and round bar handling is a demanding project. This drawing shows the structural layout, rotating trolley design, magnetic beam geometry, and electromagnetic system Yuantai Crane uses for billet yard and round bar handling crane projects. The magnetic beam is fitted with 2 normal ambient temperature magnetic chucks model MW38-14095L/1 for stable lifting of long workpieces.
| Site Requirement | Yuantai Solution | Drawing Parameters |
|---|---|---|
| Square billet and round bar handling with direction change Billets and bars need to be lifted and turned to match process direction. | QCL electromagnetic overhead crane with rotating trolley, electromagnetic beam, and 2 magnetic chucks 1500×950, model MW38-14095L/1. | Capacity 10 t + 10 t | Span 29.5 m | Magnet MW38-14095L/1, 1500×950, 2 sets | Trolley rotating 1.1 r/min |
| Scale removal and grab bucket descaling in the billet yard The same crane must handle billets and clean scale from the pit. | Dual-purpose design: magnetic beam with 2 magnetic chucks for billet and round bar handling, hook for grab bucket descaling. | Magnetic beam for SQ130/SQ160/SQ200 and 220 mm round bar | Hook for grab bucket | Scale removal and descaling |
| Continuous heavy duty operation in a billet yard High cycle count, dusty environment, 3-shift operation. | A8 duty, hoist M8, trolley travel M7, trolley rotating M7, crane travel M8. Cabin control for operator comfort and clear view. | A8 duty | Hoist M8 | Trolley M7 | Rotating M7 | Crane travel M8 | Cabin control | GB/T14405 |
Does This Electromagnetic Overhead Crane with Rotating Trolley Fit Your Facility?
- 10 t + 10 t QCL electromagnetic overhead crane with rotating trolley and magnetic beam: 29.5 m span, 10 m + 20 m lifting height.
- 2 magnetic chucks 1500×950, model MW38-14095L/1: stable lifting of long billets and round bars.
- Rotating trolley at 1.1 r/min: aligns the magnetic beam with the load direction.
- Square billet SQ130/SQ160/SQ200 and round bar 220 mm handling: matched to your product range.
- Scale removal and grab bucket descaling: dual-purpose design for the billet yard.
- A8 duty, M8 hoist, M7 trolley, M8 travel: continuous heavy duty operation.
- Cabin control and full VFD: precise load positioning from a comfortable cabin.
- Built to GB/T14405: meets Chinese national standard for overhead cranes.
Not Sure If This Layout Fits Your Site?
Send us your capacity, span, lifting height, material type, magnet chuck size, rotating trolley requirement, scale removal and grab bucket descaling requirements, control requirements, and power supply. Yuantai Crane engineers will send a free CAD general arrangement drawing, structural review, and price within 24 hours.
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.
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- 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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