Patent ID: 7905326

Claim:
A method for lubricating a wave reduction gear, wherein lubricating oil is supplied to bearing components of a wave generator fitted inside a cup-shaped flexible externally toothed gear in a wave reduction gear disposed in a device case, and portions where the flexible externally toothed gear and a rigid internally toothed gear are enmeshed; wherein the lubricating method is characterized in comprising: forming at least one oil supply hole in a region of at least one of a cylindrical trunk part of the flexible externally toothed gear, and a diaphragm that defines a bottom part thereof; spraying lubricating oil, which has been introduced from exterior of the device case, toward the region of the flexible externally toothed gear in which the lubricating oil supply hole is formed; forcibly introducing lubricating oil into the flexible externally toothed gear via the oil supply hole; and supplying the lubricating oil that has been forcibly introduced into the flexible externally toothed gear to the bearing components of the wave generator that is fitted in an open end part of the flexible externally toothed gear.