Geared motor series

A geared motor series, comprising:

• a plurality of motors with different dimensions, each said motor including a motor shaft provided with a receiving bore on a free end thereof and defined by a nominal external diameter, wherein the nominal external diameters of the motor shafts of the motor dimensions are different from each other;
• and
• at least one plug-in pinion having a pinion journal defined by a nominal external diameter matching a nominal diameter of one of the receiving bores, such that the plug-in pinion is fixable to a corresponding one of the motor shafts using a press assembly,
• wherein the nominal diameter of a receiving bore of a motor shaft of a motor with a first motor dimension matches the nominal diameter of a receiving bore of a motor shaft of a motor with at least one other motor dimension, such that the at least one plug-in pinion is fixable to the motor shafts of motors having different dimensions using the press assembly.