A bearing is defined by parameters such as its principal dimensions, its basic load ratings, its limiting speeds and its mass. It belongs to a category which corresponds a certain range of its parameter values. In a catalogue, a bearing is referred to by a designation. Bearing types are described by tables which define the bearing parameter values including the designation.
The bearing example has been chosen here because the bearing tables given in distributor and retailer catalogues illustrate quite well the design table principles. The bearing itself is a good example of how components within a mechanical part can be constrained by relations.
In the scenario below, you start from an existing document inspired by a deep groove ball bearing. This document contains already a number knowledgeware relations, others are added to control the document design.