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G89 Boring cycle with dwell
Centroid CNC12 Acorn G-code · Mill
Like G85 but dwells P seconds at the bottom before feeding out.
Format
G89 X Y Z R P F
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane |
P | Dwell in seconds |
F | Feed rate |
How it works
Modal, canned cycle. Cancel with G80.
Example program
G20 G17 G40 G49 G80 G90 ; INCH, SAFE START
T1 M6 ; LOAD TOOL 1, Z GOES HOME FIRST
G54 G0 X0 Y0 ; WORK OFFSET 1
S600 M3
…
T1 M6 ; LOAD TOOL 1, Z GOES HOME FIRST
G54 G0 X0 Y0 ; WORK OFFSET 1
S600 M3
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Use it for a flat bottom or a shoulder in a bore.
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 |
| Fagor 8055 8065 | Boring, feed withdrawal |
| LinuxCNC Tormach | Boring cycle, dwell, feed out |
| Mach3 Mach4 | Bore, dwell, feed out |
| Hurco WinMax (NC) | Bore with dwell, feed out |
| Fadal | Bore in, dwell, bore out |
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