How to diagnose girth gear and drive vibration on a Metso SAG / Premier mill
Vibration at the girth gear is usually a backlash or alignment issue. Check the pinion-to-girth gear backlash and confirm the pinion shaft is parallel to the mill axis before pulling the gear.
~90 min7 steps
How to detect and address liner bolt loosening on a Metso SAG / Premier mill
A knocking noise from the mill shell almost always means a loose or broken liner bolt. Stop the mill and torque-check all bolts before a liner shifts and damages the shell.
~90 min7 steps
How to diagnose trunnion bearing failure on a Metso SAG / Premier mill
Trunnion bearing failure starts as elevated temperature and low lube pressure. Stop the mill, check lube flow to each bearing, and pull an oil sample for metallic contamination before the bearing seizes.
~60 min7 steps