In the Hanau articulator, the condylar guidance is located on the lower member because it simulates the movement of the mandibular condyles during jaw function. The lower member represents the mandible, and having the condylar guidance on it allows for accurate replication of mandibular movements such as protrusion and lateral excursions. This design facilitates correct recording and transfer of the condylar path to the articulator, essential for prosthodontic treatment planning. The upper member corresponds to the maxilla and remains stationary, while the lower member moves, reflecting jaw dynamics realistically.

Reference: Contemporary Fixed Prosthodontics, Rosenstiel SF, Edition 5.