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G89 Boring, feed withdrawal / Grooving cycle along Z (lathe)
Fagor 8055 8065 G-code · Mill, Lathe
On mills: Boring, feed withdrawal
Feeds to depth I, optional dwell K, then feeds back out with the spindle running.
Format
Addresses
| Address | What it does |
|---|---|
G98 or G99 | Return to initial plane or reference plane |
X Y | Hole position |
Z | Reference plane, absolute or incremental from the initial plane |
I | Depth, absolute or incremental from the reference plane |
K | Dwell in hundredths of a second |
How it works
Modal canned cycle. Cancel with G80.
Example program
G00 G90 X1.0 Y1.0 Z1.0 S900 M03 (ABOVE BORE)
G89 G98 Z0.1 I-1.0 K20 F3.0 (BORE, DWELL, FEED OUT)
G80 (CANCEL CYCLE)
Example is in inch. Check offsets and clearances first.
Watch out for
- Gives a fine bore finish both ways. The tool may leave a light return mark.
On lathes: Grooving cycle along Z (lathe)
Cuts a face groove plunging along Z, stepping over with C between plunges, from X Z to Q R.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
X Z | Start corner of the groove |
Q R | End corner of the groove |
C | Step between plunges |
D | Safety distance |
K | Dwell at bottom |
How it works
Not modal.
Example program
G95 G97 S600 M03 (RPM MODE)
G89 X2.0 Z0 Q2.5 R-0.2 C0.1 D0.04 F0.002 (FACE GROOVE)
Example is in inch. Check offsets and clearances first.
Watch out for
- Face grooving needs a tool with the right radial clearance.
- On Fagor mills G89 is boring with feed out.
Related codes
G89 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, dwell and feed out |
| Haas NGC | Boring cycle, dwell and feed out |
| Mitsubishi M70 M80 | Boring cycle with dwell, feed out |
| Brother Speedio | Boring cycle with dwell feed out |
| LinuxCNC Tormach | Boring cycle, dwell, feed out |
| Mach3 Mach4 | Bore, dwell, feed out |
| Centroid CNC12 Acorn | Boring cycle with dwell |
| Hurco WinMax (NC) | Bore with dwell, feed out |
| Fadal | Bore in, dwell, bore out |
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