Haas Mill G70 Bolt Hole Circle

Haas G Codes Mill Reference

G70 Bolt Hole Circle (Group 00)

I Radius (+CCW / -CW)
J Starting angle (0 to 360.0 degrees CCW from horizontal; or 3 o’clock position)
L Number of holes evenly spaced around the circle

This non-modal G code must be used with one of the canned cycles G73, G74, G76, G77, or G81-G89. A canned cycle must be active so that at each position, a drill or tap function is performed. See also G-Code Canned Cycles section.


Program Example              Description
O01974                       (G70 Example)
M06 T1
M03 S1500
G54 G00 G90 X0. Y0.
G43 H01 Z0.1
G81 G98 Z-1. R0.1 F15. L0
                            (L0 on G81 line so it does not drill extra hole at start.)
                            (An L value of zero skips first hole in pattern.)
G70 I5. J15. L12
                            (Drills 12 holes on 10” below center starting at 15 degrees.)
G80 G00 Z1.

G70 Bolt Hole Circle