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G72 Scaling factor
Fagor 8055 8065 G-code · Mill and lathe
G72 S scales all axes from part zero. G72 with axis letters scales only those axes. Used for families of similar parts.
Format
G72 S or G72 X..C
Addresses
| Address | What it does |
|---|---|
S | Scale factor for all axes |
X..C | Scale factor per axis |
How it works
Modal. Cancel with G72 S1, M02, M30 or reset.
Example program
N10 G90 G01 X1.0 Y0.5 F20.0 (ORIGINAL SHAPE)
N20 X0 Y0 (ORIGINAL SHAPE)
G72 S2 (DOUBLE SIZE)
(RPT N10,N20) (REPEAT AT SCALE 2)
…
N20 X0 Y0 (ORIGINAL SHAPE)
G72 S2 (DOUBLE SIZE)
(RPT N10,N20) (REPEAT AT SCALE 2)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Scaling also changes feeds along scaled moves. Check feed per tooth.
- Use the same factor on all axes in canned cycles.
Related codes
G72 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Stock removal in facing, rough cycle |
| Haas NGC | Bolt holes along an angle |
| Mazak (EIA) | Facing roughing cycle, X direction |
| Okuma OSP | Compound thread cycle, transverse |
| Mitsubishi M70 M80 | Face rough cutting cycle |
| Heidenhain TNC (ISO) | Scaling factor |
| LinuxCNC Tormach | Lathe roughing cycle, facing along X |
| Centroid CNC12 Acorn | Rough facing cycle |
| Swiss (Citizen Star) | Rough facing cycle |
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