I suspect the library may have been inspired by the recent Audible Worlds crowd-sourced collection of the same topic. Regardless, the sound bundle features gears and wheels sourced from a bicycle. In addition to typical sound effect recordings, many of the 170 clips appear processed or stylized: whines, groans, clicks, moans, and more.
You can hear for yourself in the SoundCloud preview
The collection was captured with the CSS–5 microphone at 192 kHz, and includes Soundminer metadata.
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