G94 Feed per minute / Facing cycle

Mazak (EIA) G-code · Mill, Lathe

On mills: Feed per minute

F is in inches per minute. Normal mode on a machining center. G95 sets feed per revolution.

Format

G94

Addresses

Address	What it does
`G94`	No addresses

How it works

Modal, group 05. Usually the power on state.

Example program

G90 G94 G54 G00 X0. Y0. (ABSOLUTE, FEED PER MINUTE)
G43 H01 Z.1 (LENGTH OFFSET)
G01 Z-.1 F20. (20 INCHES PER MINUTE)

Example is in inch. Check offsets and clearances first.

Watch out for

On a Mazak lathe G94 is a facing cycle. On the mill it is feed per minute.

On lathes: Facing cycle

Mazak calls it fixed cycle B. One block cuts a full facing pass. Repeat Z for more passes. On the lathe G94 is not feed per minute.

Format

G94 X(U) Z(W) [R] F

Addresses

Address	What it does
`X`	Inner diameter of the face cut
`Z`	Face position for this pass
`R`	Taper amount in Z
`F`	Feed rate

How it works

Modal until another group 01 code.

Example program

T0101 (FACE TOOL)
G97 S900 M03 (SPINDLE ON)
G00 X3.1 Z.1 M08 (START POINT)
G94 X.5 Z-.05 F.008 (PASS 1)
…

The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.

Watch out for

Give G00 after the last pass.

Related codes

G01 · G90 · G72

G94 on other controls

The same number can mean something different on another control.

Control	Meaning
Fanuc	Feed per minute
Haas NGC	Feed per minute mode
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 Mazak G-codes

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