The following image is taken from Sandvik Coromant Turning Tools – General Turning Catalogue.
The chart given below shows Feed & Cut Depth for Finish to Rough Machining Sandvik Coromant Recommendations for multiple general turning inserts e.g. CNMG, DNMG, RNMG, SNMG, TNMG, VNMG, WNMG,KNMX
Related: What is this CNMG DNMG read this article General Turning Insert Nomenclature
Cutting Depth Recommendations
As you can see for every insert multiple cutting-edge-length are given as for CNMM 06, 09, 12, 16, 19, 25mm cutting edge lengths are given.
So now you can easily get the data for inserts you use in workshop, whether you use CNMM 120408 or CNMG 190624 or any other insert.
Now Cutting depth column is divided in three separate parts, Finishing, Medium, Roughing.
According to this chart a CNMM insert whose cutting edge length is 9mm can be used for Finishing with cutting depth minimum to 2mm max.
If same insert is used for Medium machining cutting depth might be selected from 1.5mm to 3.5mm
According to chart CNMG250924 cannot be used for Finishing, this insert can be used from Medium to Roughing machining operations.
At the top recommended feeds (mm / inch) are given for Finishing/Medium/Roughing machining operations.