Passbohrungen

Passbohrungen are precisely manufactured holes designed to accommodate components with extremely tight tolerances. The term "Passbohrung" originates from German and translates to "fit hole" or "transition hole." These holes are critical in mechanical engineering where precise alignment and interference between mating parts are essential for proper function and load transfer. The manufacturing process for passbohrungen demands high accuracy, typically involving processes like precision reaming, honing, or grinding to achieve the desired diameter and surface finish. These holes are often designed to accept pins, shafts, or bearings where a specific fit – whether it be clearance, transition, or interference – is required. The selection of the appropriate fit for a passbohrung depends on the functional requirements of the assembly, such as the need for easy assembly, vibration resistance, or the ability to transmit torque. Deviations from the specified dimensions can lead to component failure, reduced performance, or increased wear. Therefore, stringent quality control measures are employed during their production and inspection.