CNC Machinist Calculator UltraG94 Feed per minute / Face turning cycle
Fanuc G-code · Mill, Lathe
On mills: Feed per minute
F is the feed in inches per minute in G20, or millimeters per minute in G21. The normal mill feed mode.
Format
G94
How it works
Modal, group 05. Usually the power on default.
Example program
G94 (FEED PER MINUTE)
G01 X2. F30. (30 IPM)
Y1. (STILL 30 IPM)
G01 X2. F30. (30 IPM)
Y1. (STILL 30 IPM)
Example is in inch. Check offsets and clearances first.
Watch out for
- Put G94 in the safe start line.
- In G94 the tap feed is RPM times pitch.
On lathes: Face turning cycle
A single pass facing cycle. Each line rapids to Z, faces along X, feeds back out and rapids back. Add R for a taper face.
Format
G94 X(U) Z(W) [R] F
Addresses
| Address | What it does |
|---|---|
X Z | End point of the facing cut |
U W | Incremental end point |
R | Taper, Z difference from start to end |
F | Feed |
How it works
Modal, group 01. Each new Z line runs another pass.
Example program
T0101 (FACING TOOL)
G97 S1000 M03 (CONSTANT RPM)
G00 X2.2 Z.1 M08 (CYCLE START POINT)
G94 X-.03 Z.05 F.008 (FACE PASS 1)
…
G97 S1000 M03 (CONSTANT RPM)
G00 X2.2 Z.1 M08 (CYCLE START POINT)
G94 X-.03 Z.05 F.008 (FACE PASS 1)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Cancel with G00 or G01 before the next move.
- Start the cycle above the stock diameter so the tool clears on the rapid in.
Related codes
G94 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Feed per minute mode |
| Mazak (EIA) | Feed per minute |
| Okuma OSP | Feed per minute |
| Mitsubishi M70 M80 | Feed per minute |
| Brother Speedio | Feed per minute |
| Siemens 840D 828D | Feed per minute |
| Fagor 8055 8065 | Feed per minute |
| LinuxCNC Tormach | Feed per minute |
| Mach3 Mach4 | Feed per minute |
| Centroid CNC12 Acorn | Feed per minute |
| Hurco WinMax (NC) | Feed per minute |
| Fadal | Feed per minute |
| Swiss (Citizen Star) | Face turning cycle |
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Open G94 in the app All Fanuc G-codes