Impeller bearings for pumps

A fluid pump comprising:

• a housing including a primary inlet and a secondary inlet aft of the primary inlet;
• a motor;
• a shaft coupled to a rotor of the motor;
• an impeller coupled to the shaft forward of the motor, the impeller including expeller vanes to drive fluid that flows through the primary inlet;
• a first radial bearing positioned around the shaft aft of the motor;
• and
• a thrust bearing coupled to the shaft aft of the first radial bearing, wherein the fluid that enters the housing via the secondary inlet flows through the thrust bearing, wherein a first portion of the fluid that flows through the thrust bearing subsequently flows between the first radial bearing and the shaft towards a forward end of the fluid pump, wherein a second portion of the fluid that flows through the thrust bearing subsequently flows through a bore of the shaft towards the forward end of the fluid pump.

A fluid pump comprising:

• a motor;
• a shaft coupled to a rotor of the motor;
• an impeller coupled to the shaft forward of the motor, the impeller including expeller vanes;
• a first radial bearing positioned around the shaft aft of the motor;
• and
• a second radial bearing positioned around the impeller, wherein a first portion of fluid driven by the impeller flows through the second radial bearing before exiting the fluid pump, wherein a second portion of the fluid driven by the impeller flows through an outlet of the fluid pump.