Gear Machine with Eccentricity at the Gearwheels

The gear machine according to claim 3, wherein:

• the at least two gearwheels comprises a first gear wheel and a second gearwheel;
• the first gear wheel is configured to engage a first sealing surface defined on the inside of the housing;
• the second gear wheel is configured to engage a second sealing surface defined on the inside of the housing;
• and
• a segment of the first sealing surface has at least one of a different diameter and a different eccentricity than a segment of the second sealing surface.

A method for producing a gear machine that includes (i) a housing, (ii) at least two gearwheels positioned within the housing, the at least two gearwheels configured to mesh in external engagement with each other, (iii) a bearing body defining a circular-cylindrical outer surface segment and a bearing bore, wherein (a) at least one of the at least two gearwheels includes at least one bearing journal rotatably positioned within the bearing bore, (b) the bearing body is positioned within the housing with the circular-cylindrical outer surface segment engaging a corresponding bearing surface defined on the inside of the housing, (c) each of the at least two gearwheels includes a plurality of tooth tips configured to engage a corresponding sealing surface defined on the inside of the housing, and (d) at least one segment of at least one of the sealing surface and the bearing bore is eccentric with respect to the circular-cylindrical outer surface segment of the bearing body, the method comprising performing a run-in operation including the steps of:

• (i) filling the gear machine with pressurized fluid;
• (ii) running the gear machine at a predetermined operating pressure of the pressurized fluid;
• and
• (iii) selecting an eccentricity such that material of the sealing surface is removed by at least one of the at least two gearwheels.