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Indexable insert CNMG-PM RT250+ in detail

The CNMG-PM RT250+ is an established solution for medium steel machining. Equipped with a 2-color coating and the PM chipbreaker geometry, this insert supports reliable turning operations at depths of cut ranging from 1 to 4 mm. The tool is designed for professional applications, successfully handling smooth continuous cuts as well as workpieces with light interruptions.

Suitable materials

Technical data

  • Insert shape: CNMG (80° rhombic)
  • Cutting material: P20-P30 carbide
  • Coating: CVD coated, 2-color
  • Grade: RT250+
  • Machining application: Medium turning
  • Cutting conditions: Continuous and light interrupted cuts

Dimensions of CNMG-PM RT250+

Item Nr. r L I.C. S
CNMG 120404-PM RT250+ 1661215 0,4 12,9 12,7 4,76
CNMG 120408-PM RT250+ 1661220 0,8 12,9 12,7 4,76
CNMG 120412-PM RT250+ 1661225 1,2 12,9 12,7 4,76

Cutting data

Steel
Vc (m/min) fn (mm/U) ap (mm)
CNMG 120404-PM RT250+ 120-240 0,15 -0,35 1-4
CNMG 120408-PM RT250+ 120-240 0,15 -0,35 1-4
CNMG 120412-PM RT250+ 120-240 0,15 -0,35 1-4

Applications

This rhombic indexable insert is primarily used in general mechanical engineering and the production of steel components. Thanks to the resilient properties of the P20-P30 grade, it is excellently suited for longitudinal and facing operations at medium feed rates.

Furthermore, the cutting edge geometry creates favorable conditions for contour and profile turning, effectively managing uneven material allowances or slight cut interruptions.

Special features

A key feature of the CNMG-PM version is the 2-color CVD coating, which helps operators quickly and reliably assess the wear status of the active cutting edge. This practical benefit supports efficient workflows during edge indexing.

In addition, the RT250+ series offers a selection of corner radii from 0.4 mm to 1.2 mm, allowing users to precisely adapt surface finish requirements and edge stability to their specific turning tasks.

1661215

Data sheet

Materials
Steel
Processing
Mittel
Inserts
CN..
Cutting conditions
Continuous
Light interrupted

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