Table 4 Four conditions of the aero-engine bearing dataset.

From: A novel intelligent fault diagnosis method for gearbox based on multi-dimensional attention denoising convolution

Serial number

Defect

Dimension(mm)

Superclass

Subclass

N-0

No defect

–

N

0

O-1

Outer ring fault

0.5 × 0.5

O

1

I-2

Inner ring fault

0.5 × 0.5

I

2

I-3

Inner ring fault

0.5 × 1.0

I

3

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