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High-performance DNMG-MM RT250M for stainless steel machining

The DNMG-MM RT250M indexable turning insert provides a resilient and cost-effective solution for facing, longitudinal turning, and contour machining. With its specific MM chipbreaker and the highly wear-resistant, PVD-coated RT250M carbide grade, it ensures controlled chip removal in the medium machining range. This allows for stable processing of stainless steels during continuous and light interrupted cuts.

Suitable materials

Technical data

  • Insert shape: DNMG (Negative, 55° rhombic)
  • Cutting material: PVD-coated M20-M30 carbide
  • Grade: RT250M
  • Machining type: Medium machining
  • Cutting conditions: Continuous and light interrupted
  • Packaging unit: 10 pieces

Dimensions of DNMG-MM RT250M

Item Nr. r L I.C. S
DNMG 110404-MM RT250M 1661611 0,4 11 9,525 4,76
DNMG 110408-MM RT250M 1661612 0,8 11 9,525 4,76
DNMG 150604-MM RT250M 1661621 0,4 15 12,7 6,35
DNMG 150608-MM RT250M 1661622 0,8 15 12,7 6,35

Cutting data

Stainless Steel
Vc (m/min) fn (mm/U) ap (mm)
DNMG 110404-MM RT250M 60-160 0,3-0,55 2-6
DNMG 110408-MM RT250M 60-160 0,3-0,55 2-6
DNMG 150604-MM RT250M 60-160 0,3-0,55 2-6
DNMG 150608-MM RT250M 60-160 0,3-0,55 2-6

Applications

This insert is explicitly designed for the requirements of machining stainless steel. It proves its worth in standard operations like facing and turning, as well as in profile or contour cutting. As a result, it is a versatile choice for series production and flexible use in modern turning environments, particularly when medium depths of cut and feed rates are needed.

Special features

The PVD coating of the RT250M grade enhances the insert's lifespan, while the negative basic shape of the DNMG design provides high tool stability during metal removal. The specifically designed MM chipbreaker optimizes chip breaking for medium machining operations, making a significant contribution to smooth and efficient production workflows.

1661611

Data sheet

Materials
Stainless Steel
Processing
Mittel
Inserts
DN..
Cutting conditions
Continuous
Light interrupted

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