Wind turbine planet gear shaft and planet gear structure

A wind turbine planet gear assembly, comprising:

• a planet carrier,
• a wind turbine planet gear shaft fixedly mounted to the planet carrier, and
• a planet gear mounted on the wind turbine planet gear shaft,
• wherein the wind turbine planet gear shaft includes:
• a shaft body having an outer surface, a segment of the shaft body outer surface comprising a slide bearing surface configured to form a radial slide bearing with an inner opening of a planet gear, the slide bearing surface having a first portion configured as a non-load-bearing zone and a second portion configured as a load-bearing zone,
• exactly one axially elongate oil pocket in the slide bearing surface, the oil pocket being located in the non-load-bearing zone,
• an oil supply channel in the shaft body having a first end in fluid communication with the oil pocket and a second end,
• a first oil return channel in the slide bearing surface having a first end at a first longitudinal end of the oil pocket and a second end open to ambient air, and
• a second oil return channel in the slide bearing surface having a first end at a second longitudinal end of the oil pocket and a second end open to the ambient air,
• wherein the second end of the oil supply channel is located in a circumferentially extending groove in the outer surface of the shaft body, and
• wherein the planet carrier includes an oil feed channel in fluid communication with the circumferentially extending groove.