In the ever-evolving landscape of the metal stamping industry, innovation is key to staying ahead of the competition. One area that has seen significant improvements is the braking mechanism employed in decoilers. Traditionally, these machines relied on a contact-based mechanical friction method for braking, which had its fair share of drawbacks. In this article, we’ll explore how hydraulic decoilers have revolutionized the industry by replacing the conventional braking system with a hydraulic valve braking system.

The Downside of Traditional Decoiler Braking

The old-fashioned friction-based braking method used in decoilers had several limitations. It was prone to damage, had a limited lifespan, and often delivered subpar braking performance. Moreover, it lacked precision in controlling the braking force, making it unreliable when dealing with heavy loads. Stability and safety concerns loomed large, prompting the industry to seek a more dependable alternative.

The Emergence of Hydraulic Decoilers

Enter hydraulic decoilers, which brought about a paradigm shift in how these machines operate. Instead of relying on the traditional butterfly-type brake mechanism, hydraulic decoilers adopted a hydraulic valve braking system. This innovative system consists of three sets of check valves and one relief valve, offering a host of advantages over its predecessor.

Key Benefits of Hydraulic Decoiler Braking

1. Stability and Reliability

The hydraulic brake valve assembly in the hydraulic decoiler provides unmatched stability and reliability. Unlike the friction-based approach, it can withstand heavy loads without compromising safety or performance.

2. Noiselessness

One of the significant drawbacks of the old braking method was the noise it generated. Hydraulic decoilers operate quietly, ensuring a peaceful working environment.

3. Adjustable Braking Pressure

Thanks to the relief valve, operators have the flexibility to adjust the braking pressure as needed. This feature enhances control and precision in the decoiling process.

4. Extended Lifespan

Hydraulic decoilers boast an extended operational lifespan, reducing the need for frequent maintenance and replacements.

5. Improved Braking Efficacy

With the hydraulic valve braking system, braking is not just efficient but also highly effective. This means faster and safer decoiling operations.

6. Readable Braking Pressure Gauge

Operators can monitor the braking pressure with ease, ensuring that the machine operates within the desired parameters at all times.

7. Consistent Braking Force

Hydraulic decoilers maintain consistent braking force during both forward and reverse rotation, ensuring smooth and reliable operation.

How It Works

The hydraulic brake valve in the hydraulic decoiler is an integral part of the oil pressure brake system. It connects the inlet and outlet joints to the oil tank through a directional valve. This valve is secured to the hydraulic motor via the inlet and outlet ports.

Forward Rotation

When the electromagnetic coil IDT on the directional valve of the decoiler loses power and the coil DT gains power, hydraulic fluid flows through the directional valve, passing through the inlet and outlet joints, driving the hydraulic motor of the decoiler in the forward direction. The system pressure is regulated by the relief valve during this process.

Reverse Rotation

Conversely, when the electromagnetic coil DT on the directional valve of the decoiler loses power and IDT gains power, all four ports of the directional valve are closed. As the decoiler’s rotation shaft turns due to external forces, hydraulic fluid flows through the inlet and outlet joints, passing through the check valve assembly, the relief valve, and the return port, ultimately returning to the oil tank. Simultaneously, due to the activation of IDT, another stream of oil passes through the directional valve via the low-pressure port and check valve assembly, entering the inlet and outlet joints and reaching the hydraulic motor of the decoiler. This flow compensates for leakage and provides the hydraulic motor with the liquid flow created by the rotation of the decoiler. The braking pressure of the hydraulic motor is the difference between the set pressure of the relief valve and the set pressure of the relief valve, effectively serving as a braking mechanism.


In conclusion, the advent of hydraulic decoilers and their innovative hydraulic valve braking system has ushered in a new era for the metal stamping industry. These machines offer unparalleled stability, reliability, and control, making them the preferred choice for businesses seeking efficient and safe decoiling solutions. With their extended lifespan and improved performance, hydraulic decoilers are indeed the future of this industry.

Hydraulic Decoiler
Hydraulic Decoiler