The torsion bar press brake is a classic and cost-effective sheet metal bending machine that uses a mechanical torsion bar synchronization structure. A solid steel torsion shaft connects both ends of the ram to ensure synchronized movement during the bending process. With its simple design, stable performance, and user-friendly operation, it is widely used in sheet metal fabrication, architectural decoration, electrical enclosures, and hardware manufacturing—particularly suited for small to medium-sized workshops handling standard bending tasks.
This machine typically comes equipped with a basic CNC controller such as the E21 system, allowing operators to adjust stroke length, set back gauge positions, and configure bending angles. It can be fitted with various upper and lower dies to accommodate different bending requirements. The frame is welded from high-strength steel plates and undergoes heat treatment or vibration aging to eliminate internal stress, ensuring long-term durability without deformation. The back gauge system supports manual or motorized adjustment, improving both accuracy and efficiency.
While the torsion bar press brake is less flexible than electro-hydraulic models in terms of precision control, multi-angle programming, and complex bending, it remains a practical and reliable choice for many shops focused on batch processing of conventional parts. For users with higher demands on precision and automation, more advanced CNC bending solutions may be considered.