The invention relates to a steering knuckle, which is provided for receiving an outer ring of a wheel bearing, and to a wheel bearing arrangement with such a steering knuckle. The object of the invention is to relieve the sealing arrangements of the wheel bearing by a pre-seal, which is designed as a labyrinth seal and to realize an advantageous sealing effect due to an appropriate gap geometry. To this end, the steering knuckle has a collecting channel, which is provided to capture liquids and dirt particles and to discharge them at the periphery. The bearing seal can be changed by this measure, so that savings are possible with a minimum of sealing action of the conventional sealing arrangement and with greatly reduced friction torque. Overall, the sealing action, which is now achieved by the bearing seal and the pre-seal together, is increased or remains at least at the same level while manufacturing costs are reduced.