Fanuc Parameter 1860 May 2026

Reduce 1860 by 20% and test. If hunting stops, then fine-tune upward in smaller steps. 6.2 Alarm SP1221 – “Orientation Unfinished” Cause: Spindle cannot reach within the orientation completion width (parameter 1862) due to mechanical binding or incorrect gain. Parameter 1860 might be so low that the spindle never locks.

A: No. 1860 only applies to orientation mode (position control). Speed control remains unaffected. fanuc parameter 1860

A: Yes, on Robodrill with Fanuc 31i-B5. Default is typically 1200 for BT30 spindles. Conclusion: The Art of the Perfect Stop Fanuc Parameter 1860 may appear as just another number in a sea of thousands. But as we have seen, this unassuming integer is the difference between a tool change that sings and one that stumbles. From the physics of gain to the practicalities of field tuning, understanding 1860 empowers you to reduce cycle times, eliminate alarms, and protect your spindle amplifier from unnecessary stress. Reduce 1860 by 20% and test

Modifying CNC parameters can cause unexpected machine motion or damage if performed incorrectly. Always consult your machine tool builder’s manual and follow lock-out/tag-out procedures. The author assumes no liability for improper use of Parameter 1860. Parameter 1860 might be so low that the spindle never locks

A well-tuned spindle is a productive spindle. And now you hold the key. Need more precision CNC insights? Subscribe to our newsletter or contact a certified Fanuc service partner for advanced spindle drive diagnostics.