bearing working at 100 lbs
   Inner ring 4   Inner ring fault bearing working at 150 lbs
   Inner ring 5   Inner ring fault bearing working at 200 lbs
   Inner ring 6   Inner ring fault bearing working at 250 lbs
   Inner ring 7   Inner ring fault bearing working at 300 lbs

  : Detailed description of MFPT datasets

PU Bearing Dataset
------------------

PU datasets were provided by the Paderborn University Bearing Data Center [@PU; @lessmeier2016condition], and PU datasets consisted of 32 sets of bearing current signals and vibration signals. As shown in Table \[Tab\_3\], bearings are divided into: 1) six undamaged bearings; 2) twelve artificially damaged bearings; 3) fourteen bearings with real damages caused by accelerated lifetime tests. Each dataset was collected under four working conditions as shown in Table \[Tab\_PU\].

\[Tab\_3\]

[|m[0.07]{}&lt;|m[0.18]{}&lt;|m[0.14]{}&lt;|m[0.07]{}&lt;|m[0.18]{}&lt;|m[0.14]{}&lt;|]{} Bearing Code & Fault Mode & Description & Bearing Code & Fault Mode & Description\
K001 & Health state & Run-in 50 h before test &KI07 & Artificial inner ring fault (Level 2)&Made by electric engraver\
K002 & Health state &Run-in 19 h before test &KI08 & Artificial inner ring fault (Level 2) &Made by electric engraver\
K003 & Health state & Run-in 1 h before test &KA04 & Outer 