The BST rotating frame guide is comprised of a fixed lower frame and a rotating upper frame, whose pivot is located on the infeed of the web.

An incoming web path error causes the upper frame to rotate around its pivot point to move the web of material into a defined position on the next guiding roller.

This guiding device is used if the web path must be corrected within a short distance and a minimum of material stress.

Further advantages are the variable installation positions and the low actuating forces required.

The BST rotating frame guide is thus particularly suitable for web tension sensitive materials.