Gerotor assembly having an oil groove

A gerotor assembly comprising:

• a crankshaft;
• an inner drive gear mounted on the crankshaft;
• an outer driven gear defining a plurality of passageways and operatively configured to engage with the inner drive gear, the outer driven gear and the inner drive gear further defining at least one compressible cavity therebetween;
• and
• a housing defining an oil groove between the housing and outer driven gear, the oil groove being in fluid communication with the at least one compressible cavity via the plurality of passageways, the oil groove having a depth of approximately 2.0 mm;
• wherein the plurality of passageways begin at an inner side of the outer driven gear and terminate in a groove defined in an exterior side of the outer driven gear.