Unlike subtractive manufacturing processes, tube bending during metal formation offers advantages such as a reducedmanufacturing time and a shorter process. Stretch bending is a highly effective method for reducing springback,which refers to the elastic recovery of a material after forming, and it has two typical methods: applying a lateralforce to the material or rotating a bend die without lateral force. However, the pivot location of the rotating die instretch bending influences the deformation behavior of the material. In this study, an advanced bending machine withtwo rotational dies was used for tube bending, and the relationships between the pivot location of the rotating benddies and material deformation were investigated. The profile length after bending was also calculated based on thethree-dimensional die geometry and used as a deformation indicator. In addition, three different cases of the pivotlocation were used to analyze the effect of the pivot location, which were 10, 20, and 30mm from the original pivotaxis. The theoretical results show that the pivot location change on the Z-axis (vertical axis) is the main factorinfluencing the profile length in two-dimensional bending. Furthermore, the pivot location change on the Y-axis(horizontal axis) influences the profile length in three-dimensional bending.