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US 12,331,787 B2Granted
Rolling bearing, rotating apparatus, bearing monitoring apparatus and method for monitoring bearing
AssigneeMINEBEA MITSUMI Inc.
InventorsHideo Fujiura, Shigeyuki Adachi, Toshiaki Asakawa, Atsushi Kitamura
Life of this patent
Estimating the term…
Abstract
A rolling bearing includes an outer ring, an inner ring disposed coaxially with the outer ring, the inner ring being on an inner peripheral side of the outer ring. The rolling bearing includes multiple rolling elements disposed between the outer ring and the inner ring. The rolling bearing includes a strain gauge configured to detect strain of the outer ring or the inner ring. The strain gauge includes a resistor formed of a Cr composite film.
Claims11
A rolling bearing comprising:
- an outer ring having an outer peripheral surface;
- an inner ring disposed coaxially with the outer ring, the inner ring being on an inner peripheral side of the outer ring;
- multiple rolling elements disposed between the outer ring and the inner ring;
- and
- a strain gauge configured to detect strain of the outer ring,
- wherein the strain gauge includes at least one resistor formed of a Cr composite film,
- wherein the outer peripheral surface of the outer ring includes a first side, and a second side opposite the first side,
- wherein the second side is opposite a side of the rolling bearing at which a preload is applied,
- wherein the resistor is disposed on the second side of the outer peripheral surface of the outer ring, and
- wherein the resistor is disposed above the outer peripheral surface of the outer ring.
7 more elements
A rolling bearing comprising:
- an outer ring having an outer peripheral surface;
- an inner ring disposed coaxially with the outer ring, the inner ring being on an inner peripheral side of the outer ring;
- multiple rolling elements disposed between the outer ring and the inner ring;
- a strain gauge configured to detect strain of the outer ring;
- and
- a housing having an inner peripheral surface and disposed in contact with an outer periphery of the outer ring,
- wherein the strain gauge includes at least one resistor formed of a Cr composite film,
- wherein the outer peripheral surface of the outer ring includes a first side, and a second side opposite the first side,
- wherein the second side is opposite a side of the rolling bearing at which a preload is applied,
- wherein the resistor is disposed on the second side of the outer peripheral surface of the outer ring,
- wherein the resistor is disposed above the outer peripheral surface of the outer ring, and
- wherein the inner peripheral surface of the housing is in contact with the outer peripheral surface of the outer ring that is located directly above the multiple rolling elements, over the whole circumference of the outer ring.
9 more elements
Dependencies are inferred from the claim text.