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G93: Inverse time feed

Programs the feed as the inverse of the time to complete the block, common on 4/5 axes.

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
Feed
Machine
Milling, Mill-turn
Risk
High
Example
G93 G01 X10 A30 F2.5
E.g.:
G93 G01 X10 A30 F2.5

Parameters

F
Avance en tiempo inverso: 1/F es el tiempo del bloque en minutos (F2 = 30 s). · 1/minNecesario en 4/5 ejes con rotativos; volver a G94 después.

Machine: Milling, Mill-turnRisk: High

Fanuc · Haas

G93
  • Fanuc: Widely used in multi-axis post-processors; F is not mm/min.
  • Haas: Confirm return to G94 at the end of the section.

ISO común

  • An incorrect F can cause unexpected feeds.

Other codes in Feed

G94/G95 Advance modeG62/G63 Automatic override/threading mode
See the full list of G and M codes

Frequently Asked Questions (FAQ)

What does G93 mean in a CNC program?

Programs the feed as the inverse of the time to complete the block, common on 4/5 axes. In the catalogue it appears as "Inverse time feed", within the Feed family.

How is G93 written on each control?

Fanuc: G93 · Haas: G93. 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 G93?

G93 G01 X10 A30 F2.5 — Programs the feed as the inverse of the time to complete the block, common on 4/5 axes.

Which machines use G93?

G93 is used in: Milling, Mill-turn.

What should you watch out for with G93?

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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