In the SKHN series, we use three-part sets of non-lifting, hydraulically actuated Hirth coupling. NC operation is not possible with this technology as the tables are indexing. The SKHN are designed with an axially fixed bearing. With this design, the face plate always remains axially in position during unlocking, rotation and locking.
The large-surface and circumferential form fit between the face plate and housing allows very high tangential forces and tilting moments to be transmitted with high repeat accuracy. This makes the SKHN series perfect for the usage in grinding machines, for example.
