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G73 High speed peck drilling

Hurco WinMax (NC) G-code · Mill

Pecks by Q and backs off only a little between pecks to break the chip. Retract amount comes from the Pecking Retract Clearance parameter.

Format

G73 X Y Z R Q F [K or L]

Addresses

Address	What it does
`X Y`	Hole position
`Z`	Hole bottom
`R`	R plane, absolute Z in ISNC
`Q`	Peck depth
`F`	Feed rate
`K or L`	Repeats, 1 to 6. 0 stores the data only

How it works

Modal, group 09. Cancel with G80 or G00 to G03.

Example program

T2 M06 (.201 DRILL)
G90 G54 G00 X1. Y1. S2500 M03 (FIRST HOLE)
G43 H02 Z1. M08 (LENGTH OFFSET)
G99 G73 Z-.75 R.1 Q.1 F10. (PECK .1)
…

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

Watch out for

The back off distance is a machine parameter, not a program word.
Q stays modal and is also the bore shift for G76 and G87. Reset it when you change cycle.

Related codes

G83 · G80 · G99

G73 on other controls

The same number can mean something different on another control.

Control	Meaning
Fanuc	High speed peck drilling
Haas NGC	High speed peck drilling cycle
Mazak (EIA)	High speed peck drilling
Okuma OSP	High speed deep hole drilling
Mitsubishi M70 M80	High speed peck drilling
Brother Speedio	High speed peck drilling
Heidenhain TNC (ISO)	Rotation of the coordinate system
Fagor 8055 8065	Pattern rotation
LinuxCNC Tormach	Chip breaking drill cycle
Mach3 Mach4	High speed peck drill
Centroid CNC12 Acorn	High speed peck drilling cycle
Fadal	Peck drill, chip break
Swiss (Citizen Star)	Pattern repeat cycle

Every G-code for Hurco WinMax (NC) 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 G73 in the app All Hurco WinMax G-codes

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