Milling system with eight edges per insert

With eight useable edges per insert, the A2780 milling inserts are helping to drive down the cost per edge for high performance 45° approach milling applications. With a 15 mm edge length, these square inserts are capable of feeding at up to 0.45 mm/tooth at depths of cut of up to 6 mm thanks to the insert and seat design that generate an extremely soft cutting action. This soft cutting action with its low power requirement cutting action also makes the Master-Mill A2780 inserts ideal for lower-powered, 'lighter' machining centres. This combination of insert and cutter body geometry enables maximum productivity, while protecting the machine spindle from vibration and shock during the cutting process. Inserts are available in four grades, including three of the WNT Dragonskin grades: HCN 1235 for general purpose machining of steel; HCN 2235, for stainless steel; CWX 3215, for high speed machining of cast iron; and CWX 1225, for high speed machining of steel. Users of the Master-Mill system will also benefit from the fact that the cutter body is treated with WNT's Highlight coating that protects the body from excessive wear. Through tool coolant is also a standard feature that ensures optimum swarf evacuation and lubrication at the cutting edge to maximise cutting edge life. In designing the cutter body WNT paid close attention to the insert seats, the result being an extremely robust location that eliminates the requirement for insert shims, further reducing the cost to the user.