G90 torno: Simple turning/taper cycle

Simple fixed cycle of longitudinal or conical turning in some Fanuc controls.

For reference only: syntax changes with the control, the post-processor and the machine parameters. Check the official manual and run a simulation before cutting. Legal notice.

Family: Lathe cycles
Machine: Turning, Mill-turn
Risk: High
Example: G90 X20 Z-30 F0.2

G90 torno

Lathe cycles

Simple turning/taper cycle

E.g.:

G90 X20 Z-30 F0.2

Parameters

X(U) Z(W): Diámetro final de la pasada y cota Z final; cada X nuevo repite el ciclo (cilindrado en varias pasadas). · mm
R: Conicidad: diferencia de radio entre inicio y fin de la pasada. · mm
F: Avance de corte. · mm/min con G94, mm/vuelta con G95 (en torno suele ser el modo por defecto)

Machine: Turning, Mill-turnRisk: High

Fanuc

G90 X... Z... F...

Don't confuse it with absolute G90 on the mill; the lathe context is key.

Haas

Around can function as a cycle; confirm format by model.

Other codes in Lathe cycles

G71 Lathe roughing cycle G76 Lathe threading cycle G74/G75 Deep drilling and grooving on the lathe G32 Simple lathe threading G92 torno Simple lathe threading cycle G34 Variable-lead threading G94 torno Simple facing cycle Fanuc G71.7-G76.7 Modern .7 lathe cycles

See the full list of G and M codes

Frequently Asked Questions (FAQ)

What does G90 torno mean in a CNC program?

Simple fixed cycle of longitudinal or conical turning in some Fanuc controls. In the catalogue it appears as "Simple turning/taper cycle", within the Lathe cycles family.

How is G90 torno written on each control?

Fanuc: G90 X... Z... F.... The exact syntax depends on the control version and the machine parameters: always confirm with the manufacturer's manual.

Can you give me an example of G90 torno?

G90 X20 Z-30 F0.2 — Simple fixed cycle of longitudinal or conical turning in some Fanuc controls.

Which machines use G90 torno?

G90 torno is used in: Turning, Mill-turn.

What should you watch out for with G90 torno?

High risk: a mistake here can cause a crash, a broken tool or an out-of-tolerance part. Simulate the program and dry-run it before cutting.

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