Fanuc Series 15i/150i-MA (Programming) Operators Manual

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13.1.8 Boring Cycle (G85)
This cycle is used to bore a hole.
G85(G98) G85(G99)
G85 X_ Y_ Z_ R_ F_ L_ ;
X_ Y_ : Hole position data
Z_ : The distance from point R to the bottom of the hole
R_ : The distance from the initial level to point R level
F_ : Cutting feed rate
L_ : Number of repeats (if required)
Initial level
Point Z
Point R level
Point Z
Point RPoint R
- Operation
After positioning along the X- and Y- axes, rapid traverse is performed
to point R.
Drilling is performed from point R to point Z.
When point Z has been reached, cutting feed is performed to return to
point R.
- Spindle rotation
Before specifying G85, use a miscellaneous function (M code) to rotate
the spindle.
- Miscellaneous function
When the G85 command and an M code are specified in the same block,
the M code is executed at the time of the first positioning operation.
When L is used to specify the number of repeats, the M code is
executed for the first hole only; for the second and subsequent holes,
the M code is not

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