Cycle Syntax
G72 W0.8 R2.0;
G72 P200 Q300 U1.0 W0.5 F0.2;
G72 P200 Q300 U1.0 W0.5 F0.2;
Parameter Explanation
W – Depth of cut in Z (1st line)
R – Retract value before moving to next pass
P – Start block number of subroutine
Q – End block number of subroutine
U – Finish allowance in X
W – Finish allowance in Z (2nd line)
F – Feedrate (mm/rev)
Key Notes
🔹 G72 is a facing roughing cycle used to remove stock along the Z-axis (face turning).
🔸 Commonly used when the tool cuts step by step along Z and retracts in X.
🔸 Suitable when material length is short and face cuts are dominant.
🔸 Commonly used when the tool cuts step by step along Z and retracts in X.
🔸 Suitable when material length is short and face cuts are dominant.