CNC A-Z Axis Explanation
CNC A-Z Axis Explanation
| Letter |
Axis / Function |
Description |
Example |
| X | Linear Axis | Left/Right | G01 X50.0 |
| Y | Linear Axis | Front/Back | G01 Y25.0 |
| Z | Linear Axis | Up/Down | G01 Z-10.0 |
| A | Rotary around X | Tilt or rotate | G01 A90.0 |
| B | Rotary around Y | Rotation | G01 B45.0 |
| C | Rotary around Z | Rotary table | G01 C180.0 |
| U | Relative X | Incremental X | G01 U5.0 |
| V | Relative Y | Incremental Y | G01 V3.0 |
| W | Relative Z | Incremental Z | G01 W-10.0 |
| I | Arc Offset X | Circle center X | G02 X20 Y20 I10 |
| J | Arc Offset Y | Circle center Y | G02 X20 Y20 J10 |
| K | Arc Offset Z | Circle center Z | G03 Z-5 K2 |
| L | Loop Count | Cycle Repeat | G83 ... L3 |
| M | Misc Function | Coolant, Spindle, End | M03, M08, M30 |
| N | Line Number | Program Line | N10 G00 X0 Y0 |
| P | Parameter | Dwell, Thread depth | G04 P1000 |
| Q | Step | Pass/Peck increment | G76 Q100 |
| R | Radius/Return | Arc or Return plane | G81 R2.0 |
| S | Spindle Speed | RPM control | S1500 M03 |
| T | Tool Number | Tool selection | T0101 |
| F | Feedrate | Speed of movement | F100 |
| D | Diameter Offset | Tool comp | G41 D01 |
| H | Height Offset | Tool length comp | G43 H01 |