Faster and Easier Slotting

June 21, 2018
Kennametal's slotting platform provides a cost-effective but highly productive solution across a wide range of applications.

Kennametal’s KNS slotting platform provides a cost-effective but highly productive solution across a wide range of applications


The KNS has a Double-V design for secure insert retention. A combination of radial and axial positioning not only improves tool life but part accuracy as well. The insert range accommodates slot widths from 1.6 to 6.4 mm (0.063 to 0.250 in.). Inserts are available in single or double-ended cutting edges with either a flat or full radiused cutting edge. The cutter diameters range from 63 to 250 mm (2.5 to 10 in.), and depending on the body size, arbor or shell mounting (or both) is possible.


The KNS boasts a simple but secure Double-V to accurately locate inserts. There’s no chance of movement as there is with other kinds of slotting and grooving cutters. Tool life improves, as does part quality.


These features already give Kennametal a substantial lead over the competition in the narrow slotting market, but the benefits don’t stop there. There’s also the carbide. Tim Marshall, senior global product manager for indexable milling notes that Kennametal has made significant improvements in grade technology recently, and that the KNS leverages these developments.


Good carbide is important, but so too is the insert geometry. Thanks to a positive rake geometry and special edge preparation, the KNS inserts are free cutting without sacrificing the edge toughness needed in most slotting applications. What’s more, the SGP geometry promotes excellent chip flow, curling even the stringiest materials into tight, easily-evacuated Cs and 9s. This means you can put the shim stock and home-made chip hooks back in your toolbox.


The KNS is also easy to use. The innovative, symmetrical Easy-X wrench design means no more digging in the chip pan for lost screws and inserts, no more wedges or clamps to misplace—just pop the wrench into the cutter body, give it a twist, and the insert is easily replaced, even in tight quarters. Each cutter body and wrench are also clearly marked, so there’s no chance of damaging the cutter body by using the wrong tool.


Last, but not least, the integral hub design. This eliminates the need for drive rings and washers, and greatly contributes to the system’s repeatability and accuracy. And because the hub has dual keyways, the cutters can be staggered in gang-milling scenarios, reducing cutting forces and generating a smooth cutting action.


The KNS system’s dual keyways provide staggered entry in gang milling situations, reducing cutting forces. And the integral hub is both more accurate and rigid than competing systems.