WNMG 080408 Grewin Turning Insert

WNMG 080408 Grewin Turning Insert

The WNMG 080408 Grewin is a turning insert for use with compatible WNMG-style toolholders in CNC and manual lathe operations. It is intended for industrial turning applications where a replaceable indexable insert is required for reliable metal cutting performance. Exact grade, coating and chipbreaker details are not specified in the available product data, so final suitability and cutting parameters should be confirmed against your workpiece material, machine condition and tooling setup.

Practical Applications

• External turning with compatible WNMG holders
• Facing operations where the holder and setup allow
• Profiling and general turning work
• Roughing to semi-finishing applications depending on grade, rigidity and cutting conditions
• Production, repair and maintenance machining environments

Material Suitability

Material compatibility depends on the actual insert grade, coating and chipbreaker. Because these details are not visible in the product data, use this insert only after confirming it is suitable for your intended workpiece material.

Workpiece material	Guidance
Steel	Common WNMG application area when the grade is suitable.
Stainless steel	Possible with the correct grade, stable setup and appropriate coolant strategy.
Cast iron	May be suitable depending on grade and edge preparation.
Non-ferrous metals	Check grade and edge geometry before use.
Heat-resistant alloys	Use only with a suitable grade and conservative parameters.

General Cutting Speed Guidance

The following values are broad starting guidance only and are not guaranteed cutting parameters. Always adjust feed, depth of cut and speed according to machine rigidity, coolant, tool overhang, holder condition, insert grade and workpiece material.

Material group	Broad starting cutting speed guidance
General steels	Approx. 180–340 m/min
Stainless steels	Approx. 150–240 m/min
Cast irons	Approx. 80–200 m/min
Aluminium and non-ferrous alloys	Approx. 150–400 m/min if the insert geometry and grade are suitable
Heat-resistant alloys	Approx. 20–60 m/min with a suitable grade and rigid setup

Buyer Notes

• Product code: WNMG 080408
• Brand: Grewin
• SKU: 10104
• Check toolholder compatibility before ordering
• Confirm grade and coating requirements for your material and operation

Order the WNMG 080408 Grewin insert for your compatible turning toolholders and keep production machining supplied with reliable replacement inserts.