Mitsubishi CNC Milling | G12 and G13 Codes | Circular Cutting

In this article, we describe how to use G12 and G13 codes for circular cutting in Mitsubishi CNC controlled milling machines with all details and examples.


G12 and G13 Codes Introduction

Circular cutting starts the tool from the center of the circle, and cuts the inner circumference of the circle. The tool continues cutting while drawing a circle and returns to the center position.

G12 and G13 Codes Format

G12 I__ D__ F__ ; … Circular cutting Clockwise (CW)
G13 I__ D__ F__ ; … Circular cutting Counterclockwise (CCW)


I : Radius of circle (incremental value), the sign is ignored
D : Offset No. (The offset No. and offset data are not displayed on the setting and display
F : Feedrate


You may be interested also:
“Fanuc CNC Milling | G12 and G13 Codes | Circular Pocket Cycles”

G12 and G13 Example

G12 I50.000 D01 F100 ; When compensation amount is +10.000mm

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