Rotary machine system

A rotary machine system comprising:

• a rotary electric machine that has a rotary electric rotor and has a rotary electric bearing rotatably supporting the rotary electric rotor;
• a rotary machine that has a rotary machine rotor that is configured to rotate with the rotary electric rotor and has a rotary machine bearing rotatably supporting the rotary machine rotor;
• a first supply line through which a lubricating oil is supplied to the rotary electric bearing;
• a second supply line through which the lubricating oil is supplied to the rotary machine bearing at a flow rate higher than that in the first supply line;
• a first discharge line through which the lubricating oil is discharged downward from the rotary electric bearing;
• a second discharge line through which the lubricating oil is discharged downward from the rotary machine bearing at a flow rate higher than that in the first discharge line;
• and
• a lower discharge line through which the lubricating oil discharged from the first discharge line and the second discharge line flows toward a discharge destination,
• wherein the lower discharge line has a first connecting portion connected to a lower end of the first discharge line and a second connecting portion connected to a lower end of the second discharge line, and extends such that the lubricating oil heads for the discharge destination through the first connecting portion from the second connecting portion.