Motor/timing belt drive in calander
DE bearing is spherical roller bearing 21316 E/c3 (20 Rollers), seized and the shaft got broken, Temperature was +200 C, the damage started with BPFO in the afternoon, 6 hours later...... catastrophic failure.
investigation of the case, we found another positions has 21316 cc/c3 (19 Rollers) and we never experienced a catastrophic failure !
Could an Expert help me in justifying the case
Thank you in advance