Handle Thick Coil in One Reinforced Unit
A thick plate decoiler straightener combines coil payoff and leveling for heavy stock. The Jingcui SJR Series is built for medium-to-thick coil from 0.5 to 6.0 mm. It feeds a flat, stable strip into your stamping line.
This 2-in-1 thick plate leveler uses a reinforced frame and higher motor power. It handles thicker plate and heavier coil than standard cradle units.

What Is a Thick Plate Decoiler Straightener?
A thick plate decoiler straightener decoils and levels thicker coil in one station. The manually expanded mandrel pays off the coil while the rollers flatten it. Combining these steps saves space and shortens setup.
The SJR Series comes in two thickness ratings. Type A covers 0.5 to 4.5 mm. Type B extends to 1.0 to 6.0 mm for the heaviest stock.
Applications
- Coil decoiling and straightening before continuous stamping
- Hardware stamping and sheet-metal parts
- Automotive structural parts, chassis brackets, door locks, brake backing plates
- Appliance housings, lighting, and machine parts
- Thick-plate straightening for appliance metal stamping of housings and panels
Models & Sizes
| Model | Material Width | Thickness (A / B) | Motor (A / B) | Coil Weight |
|---|---|---|---|---|
| SJR-200A / B | 200 mm | 0.5–4.5 / 1.0–6.0 mm | 3 / 5 HP | 3000 kg |
| SJR-300A / B | 300 mm | 0.5–4.5 / 1.0–6.0 mm | 5 / 7.5 HP | 3000 kg |
| SJR-400A / B | 400 mm | 0.5–4.5 / 1.0–6.0 mm | 5 / 7.5 HP | 3000 kg |
| SJR-500A / B | 500 mm | 0.5–4.5 / 1.0–6.0 mm | 5 / 7.5 HP | 3000 kg |
| SJR-600A / B | 600 mm | 0.5–4.5 / 1.0–6.0 mm | 5 / 7.5 HP | 3000 kg |
| SJR-700A / B | 700 mm | 0.5–4.5 / 1.0–6.0 mm | 7.5 / 10 HP | 3000 kg |
| SJR-800A / B | 800 mm | 0.5–4.5 / 1.0–6.0 mm | 7.5 / 10 HP | 3000 kg |
| SJR-1000A / B | 1000 mm | 0.5–4.5 / 1.0–6.0 mm | 10 / — HP | 3000 kg |
Technical Specifications
| Machine type | 2-in-1 thick-plate decoiler & straightener |
|---|---|
| Material thickness | Type A 0.5–4.5 mm; Type B 1.0–6.0 mm |
| Material width | 200–1000 mm (by model) |
| Straightening speed | 15 m/min |
| Straightening motor | 3–10 HP (by model) |
| Coil inner diameter | 450–530 mm |
| Coil outer diameter | 1300 mm |
| Coil weight capacity | 3000 kg |
| Dimensions (L × W × H) | 5 × 1.9 × 2.5 m |
| Speed control | Frequency converter (VFD included) |
Key Features
2-in-1 Thick-Plate Design
Decoiling and straightening share one reinforced unit. This thick plate decoiler straightener cuts floor space and process steps for heavy stock.
Wide Thickness Range
It handles a broad 0.5 to 6.0 mm range with easy loading. Fast changeover suits varied stamping rhythms.
Japanese Electrical Components
The control box uses Japanese electronic components. They deliver low failure rates and a long service life.
High-Hardness Bearing-Steel Rollers
Rollers are heat-treated, chrome-plated, and ground. High hardness and wear resistance keep precision stable over time.
Thick-Material Hold-Down and VFD
A built-in hold-down improves straightening on thick stock. The variable-frequency drive enables smooth speed control.

Line Integration
The SJR Series integrates with the rest of your straightener machines. Add a servo feeder and a coil handling system to complete an automated heavy-stock stamping line.
FAQ
What is the difference between Type A and Type B?
Type A handles 0.5 to 4.5 mm thickness. Type B extends to 1.0 to 6.0 mm for heavier stock.
What is the maximum coil weight?
The SJR Series carries up to 3000 kg across all models.
What width does it cover?
It covers 200 to 1000 mm across eight model sizes.
Is it suitable for automotive parts?
Yes. It suits automotive structural parts, chassis brackets, door locks, and brake backing plates.
Request a Quote
Share your material thickness, width, and coil weight. We will recommend the right thick plate decoiler straightener for your production. Contact Jingcui today.




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