Zhongtuo Hydraulic Decoiler with Loading Car 5T–20T Uncoiler Machine for Steel Coil

The Hydraulic Decoiler with Loading Car is designed to efficiently handle and unwind heavy steel coils in modern roll forming production lines. This uncoiler machine plays a critical role in feeding metal coils smoothly and consistently into downstream equipment such as straighteners, roll forming machines, and cutting systems.

Our hydraulic decoiler is available in multiple capacity options, including 5T, 8T, 10T, 15T, and 20T, allowing manufacturers to select the most suitable configuration for their production needs. The system supports a wide range of metal materials such as galvanized steel, color-coated steel, stainless steel, aluminum, and other alloy materials.

By combining a hydraulic expansion mandrel, coil loading trolley, pneumatic braking system, and intelligent control, the machine ensures stable operation, accurate coil feeding, and high production efficiency.

Strong Mechanical Structure and Durable Components

To guarantee long-term performance, the main frame of the decoiler is constructed from high-strength welded steel plates. After welding, the structure undergoes annealing and precision machining to improve strength, durability, and stability during operation.

The spindle is manufactured using four seamless steel tubes that are tempered to resist deformation under heavy loads. This design allows the decoiler to operate reliably even when handling large coils for extended production periods.

Additionally, the machine uses high-quality bearings and robust transmission components. The motor works together with a reducer and belt-driven system to ensure smooth rotation, stable torque transmission, and minimal risk of mechanical failure.

The inner support tiles feature a four-blade structure with a curvature that matches the inner diameter of the coil, which helps protect the material surface from scratches or damage during the uncoiling process.

Hydraulic Expansion System for Secure Coil Clamping

The decoiler uses a hydraulic oil cylinder expansion system to adjust the mandrel diameter automatically and securely clamp the steel coil. Once the coil is mounted, the hydraulic system expands the mandrel to match the inner diameter of the coil, ensuring a firm grip.

This design prevents coil slipping during operation and maintains stable feeding tension when working together with roll forming machines or leveling equipment.

Key advantages of this system include:

• Strong and stable clamping force
• Smooth forward and reverse rotation
• Adjustable feeding speed
• Consistent coil tension control

The expansion range supports coil inner diameters starting from Φ450 mm, while rubber protection rings help adapt the mandrel to 550 mm diameter coils.

Hydraulic Coil Loading Car for Easy Material Handling

The hydraulic entry coil car simplifies the coil loading process and significantly reduces manual labor. Operators can easily move heavy coils into the correct position using the hydraulic lifting and motor-driven movement system.

Key Features of the Coil Loading Car

• Horizontal and vertical movement for precise positioning
• Hydraulic cylinder lifting system with four guide pillars for stability
• Motor-driven horizontal travel for smooth movement
• Maximum capacity up to 10 tons
• Travel speed approximately 6–7 m/min

Once the coil is successfully mounted on the decoiler mandrel, the trolley automatically returns to its starting position. It can also retrieve unfinished coils from the decoiler when necessary.

This design greatly improves loading efficiency and enhances operator safety.

Smooth Feeding and Automatic Control System

The hydraulic decoiler is equipped with a pneumatic braking system, which helps synchronize the coil feeding speed with the roll forming machine. This prevents coil overspinning and ensures stable material tension throughout the production process.

In addition, the machine features a simple and reliable electrical control system using well-known components such as AC contactors, relays, and industrial control devices. The control box allows operators to start, stop, and monitor the machine easily.

An automatic induction control system further enhances automation by detecting material movement and controlling the start/stop operation of the decoiler automatically. As a result, the operator no longer needs to manually supervise the feeding process continuously.

Technical Specifications of Hydraulic Decoiler

Typical Work Flow of the Decoiler System

The hydraulic decoiler works together with the loading trolley to ensure efficient coil feeding during production.

The typical workflow is as follows:

1. Place the steel coil onto the loading trolley.
2. The trolley moves toward the decoiler and lifts the coil to the same center height as the mandrel.
3. The trolley pushes the coil toward the decoiler arms.
4. The hydraulic expansion system clamps the coil securely.
5. The trolley returns to its original position.
6. The decoiler rotates and feeds the coil material into the production line.

This process ensures safe handling, precise positioning, and efficient coil feeding for continuous production.

Ideal Equipment for Roll Forming Production Lines

Thanks to its robust structure, hydraulic expansion system, and automatic loading features, this hydraulic uncoiler machine is widely used in many metal processing industries.

Typical applications include:

• Roll forming machine production lines
• Roofing sheet manufacturing
• Guardrail roll forming machines
• C/Z purlin machines
• Metal profile production lines

By providing stable coil feeding and reliable operation, the machine helps manufacturers improve production efficiency while protecting material quality.