| 摘要 |
PROBLEM TO BE SOLVED: To provide a micro-traction drive unit capable of transmitting a rotation power force got from a driving source to a pump shaft under increased speed while preventing a large-sized formation of transmitting passage in an axial direction and a radial direction of the pump shaft.SOLUTION: This invention comprises an inner ring body, an outer ring body, a plurality of rollers, cages, a micro-traction drive case, and transmittance shafts coaxially positioned with the inner ring body and non-rotatably set around an axial line in respect to the cages. An end part opposite to the inner ring body of the transmittance shaft forms an input end part operationally connected to the driving source and the micro-traction drive case is connected to an HST case so as to enclose the input end part of the pump shaft of an HST and the input end part of the pump shaft is removably connected to a center hole of the inner ring body and relative non-rotatably connected around an axial line through an access opening of the micro-traction drive case.SELECTED DRAWING: Figure 1 |
