Ntn Corporation

The School Corporation Kansai University

Sota Yamaguchi

Yusuke Shibuya

Takashi Koike

Hiroshi Tani

Hiroyuki Hakamata

A bearing device includes: a magnetic ring fixed to an inner ring; and a stator fixed to an outer ring so as to face magnetic ring. Magnetic ring and stator constitute a claw pole type generator. Stator includes a coil and a magnetic yoke surrounding coil. The magnetic yoke is configured by combining a first member and a second member that are magnetic bodies. First member and second member have an identical shape. Each of first member and second member has a plurality of second claws arranged in a comb shape. A plurality of first claws of first member and the plurality of second claws of second member are alternately arranged on a surface facing magnetic ring.

Bearing device, spacer, and manufacturing method

A rolling bearing according to an embodiment includes a stationary ring having a first facing surface, a rotating ring having a second facing surface facing the first facing surface, and rotating relative to the stationary ring, rolling elements arranged between the first facing surface and the second facing surface, a cage that retains the rolling elements, first electrodes and second electrodes fixed in position relative to the stationary ring and arranged in a bearing space between the stationary ring and the rotating ring, third electrodes fixed in position relative to the rotating ring, position relative to the rolling elements, or position relative to the cage and arranged in the bearing space, and an insulating film formed on surfaces of the first electrodes and the second electrodes or surfaces of the third electrodes.

Growing community of inventors

Iwata, Japan

Sota Yamaguchi