Self-lubricating bearing

A vertical crank engine comprising:

• a crankcase having a sump region;
• a shaft disposed within a journal bearing of said crankcase;
• a stub extension on a lower end of said shaft and disposed within an interior region of said journal bearing;
• and
• said journal bearing having a passage extending into said sump to allow passage of oil from said sump to said interior region and having a channel facing said shaft;
• said stub extension having a plurality of pockets in its outer circumferential surface at its lower surface and a plurality of corresponding grooves on said outer circumferential surface, each said groove extending from said corresponding pocket to said shaft such that when said stub extension rotates, oil in said pocket is pumped through said groove to said channel to lubricate said journal bearing.

A power train apparatus comprising:

• a housing having a sump region;
• a shaft having a portion thereof disposed within an interior region of a journal bearing of said housing;
• said journal bearing having a passage extending into said sump to allow passage of oil from said sump to said interior region;
• said shaft portion having an axially facing surface disposed in said interior region of said bearing in communication with oil therein;
• and
• an oil channel between said journal bearing and said shaft;
• said shaft portion having a pocket in its outer circumferential surface at said axially facing surface and a groove on said outer circumferential surface extending from said pocket to said shaft such that when said shaft portion rotates, oil in said pocket is pumped through said groove to said channel to lubricate said journal bearing.