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G41 Radius compensation left
Heidenhain TNC (ISO) G-code · Mill
Offsets the tool to the left of the contour in the direction of travel, by the tool radius plus DR. Klartext: RL.
Format
G41 X Y [F]
Addresses
| Address | What it does |
|---|---|
X Y | First contour point |
F | Feed rate |
How it works
Modal. Cancel with G40.
Example program
N60 G01 Z-5 F1000 M3 *
N70 G01 G41 X+5 Y+5 F300 *
N80 G26 R5 F150 *
N90 Y+95 *
N70 G01 G41 X+5 Y+5 F300 *
N80 G26 R5 F150 *
N90 Y+95 *
Example is in inch. Check offsets and clearances first.
Watch out for
- With a right hand spindle, G41 is climb milling.
- Delta radius DR in the tool table or tool call adjusts size.
Related codes
G41 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Cutter compensation left |
| Haas NGC | Cutter compensation left |
| Mazak (EIA) | Cutter radius compensation left |
| Okuma OSP | Cutter radius compensation left |
| Mitsubishi M70 M80 | Cutter radius comp left |
| Brother Speedio | Cutter compensation left |
| Siemens 840D 828D | Tool radius compensation left |
| Fagor 8055 8065 | Tool radius compensation left |
| LinuxCNC Tormach | Cutter compensation left |
| Mach3 Mach4 | Cutter comp left |
| Centroid CNC12 Acorn | Cutter compensation left |
| Hurco WinMax (NC) | Cutter compensation left |
| Fadal | Cutter radius compensation left, climb |
| Swiss (Citizen Star) | Nose radius compensation left |
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