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G85 Bore, feed out
Mach3 Mach4 G-code · Mill
Feeds to Z and feeds back out with the spindle on. Used for reaming and boring.
Format
G85 X Y Z R [L] F
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | Retract plane |
F | Feed rate, both ways |
How it works
Modal, canned cycle group. Cancel with G80.
Example program
G0 G20 G90 G54 G17 G40 G49 G80 (SAFE START, INCH)
T3 M6 (.375 REAMER)
S600 M3 (SPINDLE ON)
G0 X1.0 Y-1.0 (HOLE)
…
T3 M6 (.375 REAMER)
S600 M3 (SPINDLE ON)
G0 X1.0 Y-1.0 (HOLE)
…
The full 8-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Feeding out doubles the cycle time but gives a better reamed finish.
- Cancel with G80 on its own line. A left over cycle drills at the next XY move.
Related codes
G85 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, feed out |
| Haas NGC | Boring cycle, feed in and feed out |
| Mazak (EIA) | Reaming cycle |
| Okuma OSP | Boring cycle, feed out |
| Mitsubishi M70 M80 | Boring cycle, feed out |
| Brother Speedio | Boring cycle feed out |
| Fagor 8055 8065 | Reaming canned cycle |
| LinuxCNC Tormach | Boring cycle, feed out |
| Centroid CNC12 Acorn | Boring cycle, feed out |
| Hurco WinMax (NC) | Boring, feed in and feed out |
| Fadal | Bore in, bore out |
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Open G85 in the app All Mach3 Mach4 G-codes