For example, an archived catalog for a precision component—a "Tapered Roller Cone and Rollers"—lists the part number . This item is identified as the assembled inner component of a tapered roller bearing. The core of the part number is the prefix "078". It is highly plausible that "078" is a sizing or model code for a bearing component used in SGK's assemblies, and that a part number like "SGKI 078" might be an internal or catalog reference for a specific bearing or seal kit.
The trailing numbers usually indicate sequential tracking. This can represent the 78th iteration of a design, a specific thickness or diameter measurement (e.g., 0.78mm), or a production batch number assigned to a specific calendar date. Core Applications in Modern Industry sgki 078