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one pass turn/bore cycle

G90 code word for one pass turn/bore cycle on a CNC lathe.

This cycle requires the the programmer establish some convenient starting position for the tool. The first action of the cycle is to rapid to the diameter specified in the block (X) and then feed (F) to the depth (Z) where the tool will then rapid back to the initial X and then rapid back to the initial Z position.

G90 X1Y-2F.005

This word is not used very often because of the added utility of the G71 rough turn/bore cycle that is available in most CNC lathe controllers today.