Printed from Kezuriba (kezuriba.net/en/nc/g72/)

G72

LatheOne-shot, group 00

Face rough turning cycle (cuts along X)

⌨Format and notes

G72 W_ (depth of cut) R_ (retract amount);
G72 P_ Q_ U_ W_ F_ S_ T_

The same as G71 in a different orientation. Cuts the end face with passes back and forth in X
Finish with G70

Diagram: How G72 (lathe) cuts

Same as G71 but in the other direction: cuts with passes in the X direction (toward center) by Δd each. Suited to shapes with more stock on the face side. At the end of each pass it retracts at 45°. Finish with G70.

≠Differences between controls and machines

The same code can be written or assigned differently depending on the CNC control and the machine builder. Always check your machine’s manual.

Source	Machine	Item	Detail
Haas	Machining center	Format	Accepts both the one-block format (D for depth of cut) and the two-block format

📚Sources

The meaning shown agrees in at least two sources (agreement confirmed). Explanations are written in our own words.

Siemens AG — SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D Programming Manual ISO Turning, 04.2007 Edition cache.industry.siemens.com
Haas Automation, Inc. — G-code, M-code, and Setting (per-code explanation pages) haascnc.com
Haas Automation, Inc. — Lathe Operator's Manual – 16 Lathe G-Codes (online version) haascnc.com