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G85 Boring cycle, feed out
LinuxCNC Tormach G-code · Mill
Feeds to Z, then feeds back out to R. Good for reamers and boring passes where a rapid out would mark the wall.
Format
G85 X Y Z R [L] F
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | Retract plane where feed starts |
L | Repeat count, used with G91 |
F | Feed rate |
How it works
Modal, motion group. Cancel with G80 or another motion code.
Example program
G20 G17 G40 G49 G54 G80 G90 G94 (INCH, SAFE START)
T7 M6 G43 (.375 REAMER)
S600 M3 M8
G0 X1 Y1 Z0.5
…
T7 M6 G43 (.375 REAMER)
S600 M3 M8
G0 X1 Y1 Z0.5
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- The tool feeds out at the same feed it went in.
- L repeats the hole. In G91 each repeat steps by X Y. L0 is not allowed.
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 |
| Mach3 Mach4 | Bore, 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 LinuxCNC Tormach G-codes