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G7/G8: Diameter/radius mode around lathe

Selects whether lathe X coordinates are read as diameter or radius depending on the control.

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
Machine
Turning, Mill-turn
Risk
High
Example
G7 / G8
E.g.:
G7 / G8

Machine: Turning, Mill-turnRisk: High

ISO común · Fanuc

  • ISO común: Very critical: changes the dimensional interpretation of X.
  • Fanuc: In Fanuc it usually depends on parameters/settings more than G7/G8.

Other codes in Lathe

See the full list of G and M codes

Frequently Asked Questions (FAQ)

What does G7/G8 mean in a CNC program?

Selects whether lathe X coordinates are read as diameter or radius depending on the control. In the catalogue it appears as "Diameter/radius mode around lathe", within the Lathe family.

Can you give me an example of G7/G8?

G7 / G8 — Selects whether lathe X coordinates are read as diameter or radius depending on the control.

Which machines use G7/G8?

G7/G8 is used in: Turning, Mill-turn.

What should you watch out for with G7/G8?

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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