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FANUC Controller
Spindle · Intermediate · 5-30 minutes
Fanuc 578 - Spindle oil mist error
Alarm 578 indicates the spindle oil mist lubrication system has failed or is not delivering adequate mist to the spindle bearings. This safety interlock prevents spindle operation to avoid catastrophic bearing damage from insufficient lubrication. The alarm monitors oil mist pressure, flow sensors, or delivery confirmation signals.
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Fanuc 578 - Spindle oil mist error
SPINDLE OIL MIST ERROR
Fanuc spindle alarm 578: SPINDLE OIL MIST ERROR. The spindle drive or spindle motor has detected a fault condition that requires diagnosis before spindle operation can resume.
Root Cause Summary
Alarm 578 indicates the spindle oil mist lubrication system has failed or is not delivering adequate mist to the spindle bearings. This safety interlock prevents spindle operation to avoid catastrophic bearing damage from insufficient lubrication. The alarm monitors oil mist pressure, flow sensors, or delivery confirmation signals.
Safety
- Verify corrected program or parameters before resuming machining
Causes and Fixes
- 1
Check oil level in the mist generator reservoir and refill with manufacturer-specified oil if low.
- 2
Verify mist generator is powered on and running - listen for pump operation and check indicator lights.
- 3
Inspect air supply pressure to mist unit (typically requires 80-100 PSI) and verify air line is not blocked or disconnected.
- 4
Check mist output at the generator discharge - should see visible oil mist. Replace pump assembly or mist generator if no output.
Ensure proper ventilation when checking oil mist output
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Always verify with your machine manual or a certified technician before performing service procedures.