Article Contents
G98 and G99 Codes Introduction
G98 and G99 codes are use with drilling cycles like G81, G83, G84 and etc.. for CNC Milling machines (CNC Machine Centre)
G98 and G99 Codes Format
G98 Code
| G98 ; |
When specifying G98 code, the tool coming from the bottom of a hole, returns to the initial
level.
G99 Code
| G99 ; |
When specifying G99, the tool returns to the R level from the bottom of a hole.
| You may be interested also: |
| “CNC Lathe | G50.2 and G51.2 | Polygon Turning” |
Things to Know
The figure below describes the movement of the tool when G98 or G99 is specified.
G99 is generally applied for the first drilling operation, while G98 is applied for
the last drilling operation. Even when drilling is performed in the G99 mode, the
initial level does not change.
Need to More?
Our volunteers have worked together and carefully prepared the articles published here in their native language without using machine translation. You can search the entire site for more information on the subject. You can start a discussion on CNCarea.com forums and join us to get support, ask questions, improve a published article or give your opinion.
