4 Rolls Machine

Our machines are built with a high-strength frame designed through Finite Element Analysis (FEA) to ensure maximum rigidity and precision. All main components undergo heat treatment to enhance durability and long-term stability.

Equipped with a dedicated cone rolling system, allowing the machine to easily form conical shapes with high accuracy and efficiency.

By distributing the load uniformly across several gears, the planetary arrangement provides strong and steady torque to the rollers with little energy loss, in contrast to traditional heavy transmission systems that waste energy through multi-stage mechanical losses.

A separate hydraulic motor and planetary gearbox that are directly connected on the same axis power each roll.  Longer mechanical life, improved bending precision, and smoother operation are made possible by this design, which removes torque loss during transmission.

For large-diameter cylinders, an upper and lower supporting device is provided to prevent material collapse and ensure roundness during the rolling process.

During the bending process, the pressure applied to the rolls can cause slight deflection in the center, leading to uneven curvature or flat zones along the plate. To eliminate this, our machines are equipped with a precision-engineered crowning compensation system.

Each roll is CNC-machined with a calculated crown profile that offsets deflection under load. When bending thick or wide plates, the crown ensures that pressure is evenly distributed across the entire plate width, maintaining a perfect cylindrical shape.

All rolls are forged solid and undergo induction hardening to achieve a surface hardness of 42–55 HRC, significantly improving wear resistance and extending service life. In addition, rolls receive a special surface treatment for superior hardness and smooth rolling performance, CNC machined with an optimized crown, and induction hardened up to 54 HRC for superior strength and surface durability. Optional polished rolls are available for high-finish requirements.