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The KENNAMETAL 4175959 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and parting operations on CNC lathes and turning centers. The insert carries a KCU10 manufacturer grade with a PVD-applied AlTiN coating, suited for cutting operations that demand wear resistance and edge retention at elevated temperatures. It features a right-hand cutting orientation, a 3.18 mm cutting width, and a maximum depth of cut of 3.81 mm. The full-radius geometry with a 1.59 mm corner radius promotes smooth chip flow. Machinists and toolroom technicians performing precision turning, grooving, and profiling operations install this insert using a clamp-style holding method.
This insert is designed for use in turning and grooving applications across a range of workpiece materials classified under material grades C3 and C4, which typically correspond to cast irons and non-ferrous materials. The Top Notch series is a recognized platform for indexable grooving toolholders used in both production and job-shop environments. The K chip breaker geometry and AlTiN finish make it appropriate for dry or minimal-lubrication cutting conditions. It is sized to the NR3062 insert designation and is compatible with clamp-style Top Notch toolholders accepting that insert size.
Designed for use in Top Notch series clamp-style toolholders accepting NR3062 insert size. The MSC and manufacturer cross-reference number for this insert is NR3062R/LK. Verify toolholder compatibility with KENNAMETAL Top Notch system specifications before ordering.
Installation is performed by qualified machinists or toolroom technicians working on CNC or manual turning equipment. Power down and lock out the machine spindle before indexing or replacing the insert. Seat the insert fully in the pocket before torquing the clamp to the toolholder manufacturer specification. Inspect the insert pocket and clamp for wear or debris before each insert change to maintain accurate seating and cutting geometry.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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