Electric high-speed gas flow pump arrangement

Abstract

The invention relates to an electric high-speed gas flow pump arrangement (100) with an electric motor (110) driving a flow pump rotor (80), comprising a motor housing body (40) supporting a first rolling bearing (31) and a bearing shield body (50) supporting a second rolling bearing (30), wherein a rotor shaft (39) rotating a motor rotor (74) and the flow pump rotor (80) is rotatably mounted by the two rolling bearings (30, 31), wherein the motor housing body (40) and the bearing shield body (50) are directly connected coaxially to each other by a cylindrical press fit (10) defined by an outer cylindrical friction surface (12) and an inner cylindrical friction surface (11), and wherein a separate circular fluid sealing arrangement (20) comprising an elastic sealing ring (59) is provided axially adjacent to the cylindrical press fit (10).

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