Speed-switchable reduction gear
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United States of America Patent
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Dec 22, 2020
Grant Date -
Feb 14, 2019
app pub date -
Feb 10, 2017
filing date -
Feb 26, 2016
priority date (Note) -
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Abstract
Provided is a speed-switchable reduction gear including: an input shaft; an output shaft; a plurality of output-side geared-wheels mounted on the output shaft; a shifter for selecting the output-side geared-wheel to be used; a shifter-side first bearing and a non-shifter-side second bearing provided to each the output-side geared-wheel; and a plurality of dividing walls each provided in each cell between the first and second bearings. The output shaft has an axial lubricating-oil flow path and a plurality of supply flow paths. Each dividing wall divides each cell into a first cell adjacent to the first bearing and a second cell adjacent to the second bearing and allows lubricating oil to be supplied from the supply flow paths into the first and second cells so as to make pressure of lubricating oil in the first cell higher than that in the second cell.
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