In the paper, Maximilian Kuhr , Dr. Sebastian Lang and Peter Pelz discuss the static properties of annular gaps. Instead of modelling the inertia effects using the bulk-flow approach, the presented model uses an integro-differential approach with power law ansatz functions for the velocity profiles and a Hirs' model to calculate the resulting pressure field. For an experimental validation of the model, a test rig is presented using magnetic bearings to inherently measure the position as well as the induced forces.