G41 Tool radius compensation left

Fagor 8055 8065 G-code · Mill and lathe

Offsets the tool to the left of the path, seen in the cut direction. Radius comes from the tool offset selected with D.

Format

G41 [N] X Y

Addresses

Address	What it does
`X Y`	First move with compensation
`N`	Optional collision detection, G41 N

How it works

Modal. Cancel with G40.

Example program

T1 D1 M06 (TOOL 1 WITH OFFSET 1)
G00 G90 X-0.5 Y-0.5 Z-0.25 S2500 M03 (POSITION OUTSIDE PART)
G41 G01 X0 Y0 F20.0 (COMP ON TO PROFILE START)
Y2.0 (CUT PROFILE)
…

The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.

Watch out for

Select the offset with D, for example T1 D1. D0 means zero radius.
G41 N adds collision detection that looks ahead for gouges.
Climb milling for a right hand spindle.

Related codes

G40 · G42

G41 on other controls

The same number can mean something different on another control.

Control	Meaning
Fanuc	Cutter compensation left
Haas NGC	Cutter compensation left
Mazak (EIA)	Cutter radius compensation left
Okuma OSP	Cutter radius compensation left
Mitsubishi M70 M80	Cutter radius comp left
Brother Speedio	Cutter compensation left
Siemens 840D 828D	Tool radius compensation left
Heidenhain TNC (ISO)	Radius compensation left
LinuxCNC Tormach	Cutter compensation left
Mach3 Mach4	Cutter comp left
Centroid CNC12 Acorn	Cutter compensation left
Hurco WinMax (NC)	Cutter compensation left
Fadal	Cutter radius compensation left, climb
Swiss (Citizen Star)	Nose radius compensation left

Every G-code for Fagor 8055 8065 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 G41 in the app All Fagor 8055 8065 G-codes

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