G85 Reaming cycle

Mazak (EIA) G-code · Mill

Feeds in to Z and feeds back out to R. Mazak calls it the reaming cycle. Use it for reamers and some boring bars.

Format

G85 X Y Z R F

Addresses

Address	What it does
`X Y`	Hole position
`Z`	Hole bottom
`R`	R plane
`F`	Feed rate, in and out

How it works

Modal, canned cycle group. Cancel with G80.

Example program

T11 M06 (.375 REAMER)
G90 G54 G00 X1. Y1. S600 M03 (HOLE)
G43 H11 Z1. M08 (LENGTH OFFSET)
G85 Z-.75 R.1 F6. (REAM)
…

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

Watch out for

The tool feeds out at the same feed. Leave the spindle on.

Related codes

G76 · G80

G85 on other controls

The same number can mean something different on another control.

Control	Meaning
Fanuc	Boring cycle, feed out
Haas NGC	Boring cycle, feed in and feed out
Okuma OSP	Boring cycle, feed out
Mitsubishi M70 M80	Boring cycle, feed out
Brother Speedio	Boring cycle feed out
Fagor 8055 8065	Reaming canned cycle
LinuxCNC Tormach	Boring cycle, feed out
Mach3 Mach4	Bore, feed out
Centroid CNC12 Acorn	Boring cycle, feed out
Hurco WinMax (NC)	Boring, feed in and feed out
Fadal	Bore in, bore out

Every G-code for Mazak (EIA) 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 G85 in the app All Mazak G-codes

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