CNC Machinist Calculator UltraM11 Chuck unclamp
Fanuc M-code · Lathe
Opens the chuck on many lathes. Used with bar feeders and part loaders. Some builders use M69 or another number.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M11
How it works
Stays until clamp.
Example program
M05 (SPINDLE STOP)
M11 (CHUCK OPEN)
M10 (CHUCK CLOSE)
M11 (CHUCK OPEN)
M10 (CHUCK CLOSE)
Example is in inch. Check offsets and clearances first.
Watch out for
- Make sure the spindle is stopped and the part is supported before opening.
Related codes
M11 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | 4th axis brake release |
| Doosan (Fanuc) | Parts unloader return to home |
| DMG Mori MAPPS (Fanuc) | C-axis unclamp |
| Centroid CNC12 Acorn | Clamp or chuck off |
| Hurco WinMax (NC) | Air through spindle |
| Fadal | Reciprocation, X axis |
| Swiss (Citizen Star) | Back knock-out off (Citizen) |
Every M-code for Fanuc in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open M11 in the app All Fanuc M-codes