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June 2023

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Carbide Milling Cutters for Machining Steel

Walter MD 340 Supreme (top) and MD 344 Supreme solid carbide mills

Walter has introduced the MD340 Supreme and MD344 Supreme solid carbide milling cutters for machining steel (ISO P).

"Despite a growing trend towards lightweight materials, steel machining still represents a significant market share," said a company spokesperson. "The use of the tough milling grade WK40TP with multilayer TiAlN and ZrN coatings ensures that these milling cutters provide exceptional performance when machining ISO P materials. In addition, these cutters are available with a reduced neck to enable reliable shoulder milling with an extremely high metal removal rate."

The MD340 Supreme has a diameter range from 1/16" to 3/4" or 2 mm to 25 mm and is specifically designed for roughing, full slotting and dynamic milling. The wide variety of products with three, four or five teeth makes the cutter productive for universal applications.

"The MD344 Supreme is a four-flute mill with a special face geometry for optimal 90° plunging and steep ramping angles, setting new standards when it comes to plunging and pocket and cavity milling in a single operation," said the spokesperson. "The diameter range is from 6 mm to 20 mm. The multiple operations that are performed by the MD344 Supreme can shorten machining time due to fewer tool changes, reduce the required tool spaces in the machine and reconditioning costs are also reduced because no additional boring tools are required."

The MD344 Supreme and the MD340 Supreme three-flute versions feature a 38° helix, while the MD340 Supreme four-flute has a 39°/41° variable helix, the MD340 five-flute version features a differential or unequal pitch.

"The variable helix, differential pitch versions are each perfectly coordinated and adapted to the number of teeth to ensure exceptional performance and operational smoothness, which in turn also improves the quality of the surface finish and maximizes tool life," said the spokesperson.

For more information contact:

Walter USA LLC

1510 S Batesville Rd.

Greer, SC 29650


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