| 摘要 |
A master star gear, or rotor, for testing the dimensions of an internal toothed ring gear, or stator, of a gerotor hydraulic mechanism is provided by truncation of the teeth of a mating star gear rotor so that the center-to-center variation that occurs between the centers of the ring gear and the star gear along a line may be detected and measured in order to measure the magnitude of the manufacturing errors that are present in the ring gear. The ring gear is held in place on a rotating support member by a friction fit against flats on an arbor of the support member.
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