Tension-compression bidirectional roller heads are designed for scenarios where robots apply tension and compression forces to the roller head during hemming operations in different areas or passes, enabling floating compression on sheet metal parts.

These roller heads are commonly used for single-robot sunroof hemming. Given the limitations of robot arm reach, traditional single-tension or single-compression roller heads may not suffice for panoramic sunroof hemming, often requiring two or more robots. In contrast, Mentechs tension-compression bidirectional roller heads significantly improve robot accessibility, allowing a single robot to complete panoramic sunroof hemming tasks.