Troubleshooting steps
Check spindle drive status verify motor operation check bearings review spindle diagnostics
FANUC
749 – Spindle spindle speed fluctuation
Spindle speed varies from command
Details
Spindle speed varies from command. Check spindle drive and mechanical condition.
Error typealarm
MeaningSpindle speed fluctuation
Typical causesSpindle drive fault motor fault bearing failure mechanical problem
SolutionsCheck spindle drive status verify motor operation check bearings review spindle diagnostics
Severityhigh
Catalog references
System Information
FANUC749
Utilities
Troubleshooting Steps
Related
Related FANUC Alarms
FAQ
Common questions
Is the spindle damaged?
Check spindle runout and bearing condition before restarting