Walter has unveiled its M2025/M2026 octagon finishing facemills designed to reporedly deliver superior surface quality on large cast iron components. For these types of components, optimal sealing surface function can only be guaranteed when the surfaces are completely flat, and the new finishing mill tool ranges are built to produce that result. Plus, their high feeds and cutting speeds cut processing times and their ease of handling reduces setup requirements, saving time and cost.

These facemills are equipped with efficient 16-edged octagonal peripheral inserts and three, 4-edged, wiper inserts. The basic shape of the wiper inserts is negative, while the cutting edge geometry is positive. Convex edge wiper inserts ensure a high level of surface quality. All inserts are precision ground and the cutter bodies, likewise, feature precision insert seats, and cutting edges can be changed rapidly thanks to the wedge clamping of the octagonal inserts. Tool setup savings are gained because no adjustment of the wiper cutting edges is necessary.

In addition, process reliability is enhanced by the highly precise design and manufacture of the inserts and the tool body. The inserts, which are completely ground, are available in grades WAK15, WKP25S and WHH15, and are particularly suitable for cast iron workpieces.