CNC Machinist Calculator UltraG86 Bore in, spindle off, rapid out
Fadal G-code · Mill
Feeds to Z, stops the spindle, then rapids out. Leaves a drag line, so it suits rough boring.
Format
G86 X Y Z R0 F
Addresses
| Address | What it does |
|---|---|
Z | Hole bottom |
R0 | R0 plane where feed starts. Must be at or below the start plane |
F | Feed rate |
How it works
Modal fixed cycle. Cancel with G80.
Example program
N1 G0 G40 G49 G80 G90 G17 (FORMAT 2 SAFE START)
N2 T9 M6 (1.000 BORING BAR)
N3 G0 G90 G54 X1. Y1. S1200 M3
N4 G43 H9 Z1. M8 (START PLANE)
…
N2 T9 M6 (1.000 BORING BAR)
N3 G0 G90 G54 X1. Y1. S1200 M3
N4 G43 H9 Z1. M8 (START PLANE)
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- The spindle restarts for the next hole. Allow time on short moves.
- For a finish bore use G76.
Related codes
G86 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Boring cycle, spindle stop |
| Haas NGC | Boring cycle, spindle stop and rapid out |
| Okuma OSP | Boring cycle, spindle stop |
| Mitsubishi M70 M80 | Boring cycle, spindle stop out |
| Brother Speedio | Boring cycle spindle stop |
| Fagor 8055 8065 | Boring, rapid withdrawal |
| LinuxCNC Tormach | Boring cycle, spindle stop, rapid out |
| Mach3 Mach4 | Bore, spindle stop, rapid out |
| Hurco WinMax (NC) | Bore rapid out (ISNC) or bore orient (BNC) |
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