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High-Performance WNMG-MR RT255M Turning Insert

The WNMG-MR RT255M is a negative trigonal indexable insert developed specifically for the professional machining of stainless steel. Featuring a stable geometry and six cutting edges, it provides a cost-effective solution for demanding turning operations. The PVD-coated carbide grade establishes excellent conditions for wear resistance and extended tool life. This insert effectively supports reliable and efficient workflows in CNC manufacturing environments.

Suitable materials

Technical data

  • Shape: WNMG (Trigon, 80°)
  • Processing: Medium machining and roughing
  • Cutting condition: Continuous and light interrupted cut
  • Material: Stainless steel
  • Grade: RT255M (PVD-coated M20-M30 carbide)
  • Packaging unit: 10 pieces

Dimensions of WNMG-MR RT255M

Item Nr. r L I.C S d
WNMG 060404-MR RT255M 1661651 0,4 6,5 9,525 4,76 3,81
WNMG 060408-MR RT255M 1661652 0,8 6,5 9,525 4,76 3,81
WNMG 060412-MR RT255M 1661653 1,2 6,5 9,525 4,76 3,81
WNMG 080404-MR RT255M 1661654 0,4 8,7 12,7 4,76 5,16
WNMG 080408-MR RT255M 1661655 0,8 8,7 12,7 4,76 5,16
WNMG 080412-MR RT255M 1661656 1,2 8,7 12,7 4,76 5,16

Cutting data

Stainless Steel
Vc (m/min) fn (mm/U) ap (mm)
WNMG 060404-MR RT255M 80-200 0,2-0,4 0,5-3
WNMG 060408-MR RT255M 80-200 0,2-0,4 0,5-3
WNMG 060412-MR RT255M 80-200 0,2-0,4 0,5-3
WNMG 080404-MR RT255M 80-200 0,2-0,4 1-4
WNMG 080408-MR RT255M 80-200 0,2-0,4 1-4
WNMG 080412-MR RT255M 80-200 0,2-0,4 1-4

Applications

This tool is aimed at turning stainless steel components in both batch and single-part production. The design is an excellent choice for roughing and medium machining tasks that require high material removal rates. Thanks to its robust construction, the carbide insert manages light interrupted cuts while maintaining process stability.

Special features

The advanced PVD coating of the M20-M30 carbide grade protects the cutting edges against premature wear and high thermal loads. The negative basic shape and the 80° geometry of the trigon insert ensure secure clamping in the tool holder. At the same time, the MR chipbreaker allows for dependable chip control at moderate depths of cut. Supplied in a practical 10-piece packaging unit, it is perfectly suited for professional supply management.

1661651

Data sheet

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

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