Standard gear unit, assembly kit and drive

An assembly kit for a production series of standard gear units including at least one size defined by a shaft height, for each size, the assembly kit comprising:

• one housing part;
• a first toothing part;
• at least one further toothing part forceable into engagement with the first toothing part;
• and
• further parts at least one of (a) connectible and (b) contactable with the further toothing part;
• wherein, for production of a first variant of standard gear units within the size, the assembly kit comprises:
• a first bearing on an output side;
• a first outgoing shaft supported in the bearing on the output side and in a further bearing, the first toothing part connectable to the first outgoing shaft;
• an intermediate flange;
• and
• a first shaft seal ring on the output side configured to seal on the output side;
• wherein, in the first variant, the first shaft seal ring on the output side and the first bearing on the output side are arranged between the first outgoing shaft and the intermediate flange, the first outgoing shaft supported and sealed in the intermediate flange, the intermediate flange arranged in the housing part and releasably connectable to the housing part at an interface (a) for positioning, to abut against a bore in the housing part arranged as a bearing seat and seat for the shaft seal ring and (b) for transmission of at least one of (a) power and (b) torque, secured to the housing part by a releasable connection, encompassed by the interface, including fastening screws and connecting tapped holes, a radial distance of the releasable connection to an axis of rotation of the first outgoing shaft smaller than at least one of (a) a diameter of an inner ring of the first bearing on the output side, (b) a diameter of an outer ring of the first bearing on the output side, and (c) an inside diameter of the first shaft seal ring on the output side;
• wherein for production of a second variant of standard gear units within the size, the assembly kit comprises:
• no intermediate flange;
• a same housing as the first variant;
• same toothing parts as the first variant;
• a second shaft seal ring on the output side configured to seal on the output side;
• and
• a second bearing on the output side;
• wherein in the second variant, the second shaft seal ring on the output side and the second bearing on the output side are arranged between a second outgoing shaft and the housing part at the bore of the first variant, on the housing part, a first arrangement is configured to produce a releasable connection to a device arranged on the output side and drivable by the standard gear unit, at the second outgoing shaft, a second arrangement is configured to produce a releasable connection of the second output shaft to a rotatable part of the device arranged on the output side and drivable by the standard gear unit, a radial distance of the first arrangement to an axis of rotation of the second outgoing shaft greater than a diameter of the outer ring of the second bearing on the output side and an outside diameter of the second shaft seal ring on the output side.