PLANETARY BEARING STRUCTURE

摘要

Provided is a planet bearing structure for a wind turbine generator, capable of reducing the risk of causing seizure or wear in a planet bearing of the wind turbine generator in which a slide bearing is used in a bearing portion, by improving and stabilizing formation of an oil film on a sliding surface having division surfaces. In a planet bearing structure that includes a slide bearing (50A) attached on the inner circumferential surface of a shaft hole of a planet gear constituting a gearbox, and in which the slide bearing (50A) rotates about a planet pin that is secured to a carrier, together with the planet gear, the sliding surface of the slide bearing (50A) has one or more division lines (La) that are formed by axis-wise joint surfaces and that intersect with the rotational direction, and the division lines (La) are formed in an inclined state with respect to the axial direction.