Fanuc G85 Boring Cycle – CNC Mill Programming Guide
Fanuc G85 Boring Cycle is also called Fanuc G85 Reaming Cycle.
As Fanuc G85 boring cycle can be used for Reaming operation.
Fanuc G85 Boring Cycle – Reaming Cycle
Tool traverses down to end depth with feed and retracts the withdrawal plane with feed.
Fanuc G85 Boring Cycle Format
G85 X Y Z R F K
X Y – Hole position
Z – Boring depth (Absolute).
R – Tool starting position above the hole.
F – Cutting feed rate
K – Number of repeats (if required)
Fanuc G85 Boring Cycle
Fanuc G85 Boring Cycle Operation
1 – After positioning along X and Y axis, rapid traverse is performed to point R.
2 – Boring/Reaming is performed from point R to end-depth-point Z with specified feed F.
3 – After completing depth Z with feed F, Tool returns with the same feed F.
Return plane is dependant on G98, G99 G-codes.
If G98 is specified with G85 boring cycle the tool returns to Initial-level.
If G99 is specified then tool will return to R level.
Fanuc G85 Boring Cycle Example Program
M3 S100 G90 G99 G85 X300. Y–250. Z–150. R–120. F120. Y–550. Y–750. X1000. Y–550. G98 Y–750. G80 G28 G91 X0 Y0 Z0 M5
CNC Machine
- Mastering CNC Fanuc G76 Threading Cycle: Comprehensive Guide
- Master the Fanuc G75 Grooving Cycle for Precise CNC Operations
- Sinumerik CYCLE82 Drilling & Counterboring Cycle: Advanced CNC Mill Programming
- Fanuc G76 Fine Boring Cycle: Video Demo & CNC Mill Tutorial
- Master Fanuc G76 Fine Boring Cycle for Precision CNC Milling
- Fanuc G74 Left‑Hand Peck Tapping Cycle for CNC Milling – Precise Reverse Threading
- Mastering the G86 Boring Cycle for Fanuc CNC Milling
- Mastering the Fanuc G85 Boring Cycle: Precision Hole Drilling Explained
- Fanuc G86 Boring Cycle – Precision Hole Drilling with Repeatable Depth Control
- CNC Milling Program Example – Step-by-Step G‑Code Tutorial