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Gear bearing
Gear bearing – a kind of rolling-elements bearing combining to epicyclic gear. It consist of bearing gearwheels, each of them is represented by concentric alternation of rollers and gearwheels with equal (pitch-) diameters; the widths of conjugated rollers and gearwheels in pairs are the same.
== Engagement ==
In order to avoid misalignment, sticking and reduce sliding friction in bearing gearwheels engagements on adjacent end faces of their gearwheels and rollers, the teeth must be either made beveled and/or made with engagement by surfaces providing the efficient axial meshing. For the instance, the implementations of bearing gears with beveled teeth and rollers adjacent end faces as well as herringbone engagement with minimum axial shift due to opposite slopes of teeth are presented on pictures.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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