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G97 Constant tool center feed (mill) / Spindle speed in rpm (lathe)
Fagor 8055 8065 G-code · Mill, Lathe
On mills: Constant tool center feed (mill)
On Fagor mills G97 keeps the programmed F at the tool center. This is the default feed behavior.
Format
Addresses
| Address | What it does |
|---|---|
None | No addresses |
How it works
Modal. Default. Replaced by G96.
Example program
G01 X2.0 Y1.0 F20.0 (NORMAL FEED)
G00 Z1.0 (RETRACT)
Example is in inch. Check offsets and clearances first.
Watch out for
- On the 8055 M, G97 is not rpm mode. S is always rpm on the mill.
On lathes: Spindle speed in rpm (lathe)
S is read as rpm. Use for threading, drilling on center and grooving.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
S | Spindle speed in rpm |
How it works
Modal. Replaced by G96.
Example program
G00 X0 Z0.1 (ON CENTER)
G01 Z-0.5 F0.004 (DRILL)
Example is in inch. Check offsets and clearances first.
Watch out for
- Use G97 for threading so the pitch timing stays stable.
Related codes
G97 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Constant surface speed cancel |
| Haas NGC | Constant surface speed off |
| Mazak (EIA) | Constant RPM |
| Okuma OSP | Constant surface speed off |
| Mitsubishi M70 M80 | Constant surface speed off |
| Siemens 840D 828D | Cancel constant cutting speed |
| LinuxCNC Tormach | Spindle RPM mode |
| Mach3 Mach4 | Constant RPM, Mach4 |
| Centroid CNC12 Acorn | Constant surface speed cancel |
| Hurco WinMax (NC) | Direct spindle RPM |
| Swiss (Citizen Star) | Constant RPM |
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