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    <responseDate>2026-10-16T04:53:07Z</responseDate>
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                <identifier>oai:data.mendeley.com/g2kzkwnkgw.1</identifier>
                <datestamp>2026-02-10T02:01:27Z</datestamp>
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            <metadata><oai_dc:dc xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <dc:creator>Wang, Xiaoyu</dc:creator>
    <dc:title>A multi-condition acoustic dataset of ball bearings for fault diagnosis-outer race pitting</dc:title>
    <dc:publisher>Mendeley Data</dc:publisher>
    <dc:description>This dataset provides multi-condition, long-duration acoustic data for ball bearings. The data were acquired from bearings with normal bearing faults, systematically and separately for each combination of three rotational speeds (800, 1000, and 1200 r/min) and three load levels (0%, 15%, and 30% of the rated torque, where 100% corresponds to 6 N·m).
Acoustic signals were recorded synchronously using three microphones: two B&amp;K Type 4966 and one CRY333. The sensitivities were 49.76 mV/Pa (B&amp;K at Position 2), 46.95 mV/Pa (B&amp;K at Position 3), and 23.98 mV/Pa (CRY333at Position 1), respectively. The detailed microphone placement is described in our associated dataset article to be published in Data in Brief.
For each of the nine operational conditions, a continuous 50-minute recording was captured at a sampling rate of 32,768 Hz. For data management, each 50-minute recording is segmented into five sequential 10-minute files (labeled 1-5) within the repository. The raw data are provided in the proprietary .bkc format. Files are organized and named according to a hierarchical directory structure based on fault type, speed, load, and sampling rate.
This dataset supports analytical tasks such as feature extraction and pattern recognition. It serves as a benchmark for developing and validating fault diagnosis algorithms for rotating machinery, particularly for evaluating model performance under varying operating conditions.</dc:description>
    <dc:subject>Ball Bearing</dc:subject>
    <dc:subject>Acoustic Monitoring</dc:subject>
    <dc:subject>Fault Diagnosis</dc:subject>
    <dc:contributor id="https://orcid.org/0000-0003-2362-357X">Xu, Cuifeng</dc:contributor>
    <dc:contributor>Huang, Jing</dc:contributor>
    <dc:contributor>Lu, Yuanning</dc:contributor>
    <dc:contributor id="https://orcid.org/0000-0002-8388-7502">Su, Haitao</dc:contributor>
    <dc:contributor>Lu, Jiaqi</dc:contributor>
    <dc:type>Dataset</dc:type>
    <dc:identifier>doi:10.17632/g2kzkwnkgw.1</dc:identifier>
    <dc:identifier>oai:data.mendeley.com/g2kzkwnkgw.1</dc:identifier>
    <dc:rights>Creative Commons Attribution 4.0 International</dc:rights>
    <dc:rights>http://creativecommons.org/licenses/by/4.0</dc:rights>
    <dc:relation>https://data.mendeley.com/datasets/g2kzkwnkgw</dc:relation>
    <dc:date>2026-02-10T02:01:27Z</dc:date>
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