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G85 Boring cycle, feed in and feed out / Boring canned cycle, feed out
Haas NGC G-code · Mill, Lathe
On mills: Boring cycle, feed in and feed out
Feeds to the bottom and feeds back out to the R plane. Gives a good finish for reamers and boring bars.
Format
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane |
F | Feed rate in and out |
L | Number of holes for repeats in G91 |
How it works
Modal, canned cycle group 09. Cancel with G80.
Example program
G90 G54 G00 X1. Y1. S600 M03 (HOLE POSITION)
G43 H06 Z1. M08 (APPROACH)
G85 G99 Z-.6 R.1 F6. (REAM IN AND OUT)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- The feed out can leave a light spiral line. Use G76 for a bore with no drag line.
On lathes: Boring canned cycle, feed out
Feeds to the bottom and feeds back out to the R plane. Good for reaming and fine boring.
Format
Addresses
| Address | What it does |
|---|---|
Z | Hole bottom |
R | R plane |
F | Feed rate, in and out |
X Y C | Hole position |
L | Repeats |
How it works
Modal, group 09. Cancel with G80.
Example program
G99 G97 S400 M03 (FEED PER REV)
G00 G54 X0 Z.25 M08 (CENTERLINE)
G85 Z-.75 R.1 F.006 (REAM IN AND OUT)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- The feed out doubles the time in the hole. Use G81 if the finish allows a rapid out.
- Cancel with G80 before moving to the next tool.
Related codes
G85 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, 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 |
| 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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