In the world of stamping, the decoiler plays a pivotal role as a widely used vertical expansion and contraction unwinding device. Among various decoiler types, the hydraulic decoiler stands out due to its affordability, high customization options, and excellent stability. However, traditional hydraulic decoilers employing rotary oil cylinders have faced some practical challenges, limiting their efficiency and lifespan. In response to these shortcomings, a revolutionary new design for the rotary oil cylinder in hydraulic decoilers has emerged, overcoming the limitations and taking the industry by storm.

1. Streamlining Installation and Disassembly

One major drawback of conventional hydraulic decoilers was the cumbersome installation and disassembly process of the rotary oil cylinder. The piston positioning with head-direction and tail-end locking was intended to simplify the disassembly of the piston rod, but it fell short of the desired effectiveness. The new hydraulic decoiler’s rotary oil cylinder incorporates a locking groove in the rod cavity for easy installation of the piston locking element. With this improvement, substantial maintenance work no longer necessitates complete disassembly, making the entire process much more efficient.

2. Enhancing Load-Bearing Capacity

The load-bearing capacity of the rotary oil cylinder in traditional hydraulic decoilers was a concern, particularly when the piston rod’s tail-end faced constraints due to its smaller diameter compared to the piston diameter. Frequent fractures in this area were inevitable due to the fixed semi-ring installation groove. However, the new design eliminates this issue. By creating an integral design of the piston rod and piston’s positioning section, the load-bearing capacity of the piston rod is significantly enhanced. This design modification entirely eradicates reduced load-bearing capacity in larger diameter sections, providing greater strength to withstand considerable loads during coil unwinding.

3. Prolonging Service Life

Perhaps the most significant advancement in the novel hydraulic decoiler’s rotary oil cylinder is the extension of its service life. The absence of positioning grooves in the new design achieves rapid and precise positioning, while also considerably boosting the load-bearing capacity of the rotary oil cylinder’s piston rod during stretching. As a result, the service life of the new hydraulic decoiler’s rotary oil cylinder surpasses that of conventional rotary oil cylinders by more than three times, providing exceptional durability and longevity.


In conclusion, the introduction of the hydraulic decoiler with an advanced rotary oil cylinder has revolutionized the stamping industry. Overcoming the limitations of conventional designs, this new and improved hydraulic decoiler offers streamlined installation and disassembly, enhanced load-bearing capacity, and a significantly extended service life. Manufacturers and operators in the stamping field can now benefit from the remarkable efficiency and durability of this cutting-edge technology. Embracing the hydraulic decoiler with the advanced rotary oil cylinder is a step towards optimizing productivity and staying ahead in the competitive world of stamping.

hydraulic decoiler
hydraulic decoiler