Flanged journal bearings for extended use

An endplate assembly for a positive displacement pump, the endplate assembly comprising:

• an endplate including:
• an inside surface configured to be secured to a side of the main case,
• an outside surface,
• a bore extending from the inside surface to the outside surface, and
• a mating pocket formed around the bore;
• and
• a journal bearing comprising:
• a sleeve configured to fit within the bore and receive a shaft therein, and
• a flange configured to fit within the mating pocket, wherein the flange has a perimeter with a shape that prevents rotation of the journal bearing when the flange is seated within the mating pocket.

A method for modifying a flanged bearing in a pump, the method comprising:

• exposing the flanged bearing on an outside surface of a faceplate, wherein the flanged bearing includes a sleeve mounted within a bore over a pump shaft and a flange seated in a first fixed orientation within a mating pocket on the outside surface;
• moving the flanged bearing axially along the pump shaft to remove the flange from the mating pocket;
• rotating the flanged bearing to a second fixed orientation relative to the mating pocket;
• moving the rotated flanged bearing axially along the pump shaft to insert the flange into the mating pocket;
• and
• covering the flanged bearing.

A journal bearing, comprising:

• a sleeve configured to fit within a bore of a faceplate and receive a shaft therein;
• a flange configured to fit within a mating pocket of the faceplate,
• wherein the flange has a perimeter with a geometric shape that prevents rotation of the journal bearing when the flange is seated within the mating pocket,
• wherein the flange is configured to sit within the mating pocket in at least two non-rotating orientations;
• and
• multiple grooves formed along an inside surface of the sleeve,
• wherein each of the at least two non-rotating orientations align one of the multiple grooves with a fluid channel provided on the faceplate.