Every Monday at 2:40 a.m., the #2 roughing mill throws its warm-up vibration alarm like it can smell my fresh PM checklist; last week we aligned the motor, balanced the drive rolls, and added a grease shot — perfect until 6:05. Anyone else have equipment that schedules failures around your preventive routes?
Mine used to “smell my checklist” too. Even if cold alignment looked good, try a hot alignment with thermal growth offsets and a quick soft-foot check after 20 minutes at speed; we killed a Monday-only spike by shimming an outboard foot 0.25 mm. Does it flare up when the sprays start or right as the ramp hits steady state?
We found ours was the spray header preloading the drive-side once hot; quick check is to crack the sprays at temp and watch for a 1× phase jump. Does it kick right when water opens, @lucy_wilson02?