Dormer Pramet
Np Pra~1

Inserts for Versatility in Stainless Steel Milling

March 11, 2021
A double-positive 45-deg. milling cutter (S450E) allows the same cutter body to be used for face milling and for face/copy milling – and supports internal coolant delivery.

DORMER PRAMET’s Pramet stainless steel milling range offers versatility and productivity. Insert styles include OEHT (octagonal), REHT (round), and XEHT (wiper). The versatile design of the double-positive 45-deg. milling cutter (S450E) allows the same cutter body to be used with both octagonal inserts for face milling and round inserts for face/copy milling applications as well as supporting internal coolant delivery.

Suitable for use on machines with limited power, the combination of inserts and cutter delivers high metal removal rates with low cutting force and reduced chatter.

It features positive axial and radial face angles for good cutting action and directing chips away from the work-piece. Available in a variety of diameters, the S450E performs well with fragile workpieces, unstable fixturing or preventing stainless steel work hardening.

Using eight cutting edges, the highest number available for positive inserts, the OEHT (octagonal) insert features four sharp, positive geometries for various cutting conditions:
MF is for finishing applications in stainless steel, mild carbon steel, and non-ferrous metals

· MM is for machining stainless steel in medium cutting conditions

· M is with stabilizer - suitable for difficult cutting conditions in materials such as carbon steels and harder stainless steel

· FA is for finishing and light to medium machining of non-ferrous materials

The geometries offer reduced cutting forces and increased durability for machining with or without coolant. Learn more at visit

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