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G186 Reverse live tool rigid tap, left hand
Haas NGC G-code · Lathe
Rigid taps a left hand thread in the face with a live tool. Works like G95 but turns the tool in reverse.
Format
G186 Z R F [X] [C] [Y] [W] [Q]
Addresses
| Address | What it does |
|---|---|
Z | Hole bottom |
R | R plane |
F | Feed, equal to the lead in G99 |
X | Diameter of the hole position |
C | C axis angle |
Y | Y position |
W | Incremental Z depth |
Q | Peck depth, optional |
How it works
Modal, group 09. Cancel with G80.
Example program
T0606 (.250-20 LEFT HAND LIVE TAP)
G99 (FEED PER REV)
G00 G54 X1.5 C0 Z.5 M08 (FIRST HOLE)
S500 (LIVE TAP RPM)
…
G99 (FEED PER REV)
G00 G54 X1.5 C0 Z.5 M08 (FIRST HOLE)
S500 (LIVE TAP RPM)
…
The full 7-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Command S before G186.
- G99 must be active, the same as G95.
Related codes
Every G-code for Haas NGC in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open G186 in the app All Haas NGC G-codes